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Article
Physical Sciences
Quantum Science and Technology

D. T. Froedge

Abstract: The Born rule assigns probability density \( |\psi|^2 = \psi^* \psi \) to a single wavefunction. It is postulated here that this interpretation, while computationally successful, conflates two physically distinct situations. For a bound state, \( \psi^*\psi \) is not the square of a single wavefunction but the coincidence product of two independent conjugate wavefunctions \( \psi_1\psi_2 \) — one incident, one its counter-propagating conjugate — simultaneously present. Detection of a quantum event requires the coincidence of these two conjugates at the detection point; a single wavefunction alone cannot populate a bound energy state or trigger detection. Stated carefully, the postulate is a bilinear detection law: detection is postulated to depend bilinearly on two conjugate field amplitudes through their product, rather than on an independently squared probability for each field. Under stated hypotheses this law reproduces standard results of quantum mechanics — the double slit interference pattern in the pair-arrival regime, and an invariant composite rest mass for the bound pair — without wavefunction collapse. A complete account of Bell correlations is not claimed: a locally factorizable coincidence model cannot reproduce the quantum correlations for arbitrary analyzer settings, and constructing a CHSH-complete treatment is registered as the central open problem of the interpretation (Section 5). The two-photon electron of Delta-c Mechanics provides the mechanical realization of this postulate: the electron is formed by two conjugate photons in counter-propagating circular orbit, their combined flow density forming a standing wave that is Lorentz invariant by construction. A structural correspondence between the Feynman path-integral hierarchy and this standing-wave construction is proposed in companion work; the exact amplitude mapping remains open. A Thomson scattering experiment capable of distinguishing the coincidence interpretation from standard QM is identified and described in a companion paper.

Article
Physical Sciences
Quantum Science and Technology

David Vesterlund

Abstract: Quantum-network capacity planning couples memory physics, finite storage, topology, and traf-fic. We study these interactions using a discrete-event simulator with six representative memory profiles. A memory–topology atlas contains 9,360 completed runs, complemented by 8,730 confir-matory runs and an extended per-node memory-budget sweep. We distinguish a threshold relative to the best performance observed on a finite grid from a physical saturation limit. Among 840 re-ported threshold estimates, 22.3% reach 95% of the observed maximum by four slots per node, while 35.5% first reach it at the upper grid boundary of 64 slots. Four tested scalar reductions do not provide a topology-independent collapse; the best pooled quadratic fit explains 37.9% of response variance. The retrieval-window parameter χr = τr pgen/tattempt provides an interpretable descriptor, but an independent-channel approximation does not establish a network memory-sizing law. In 5,310 heterogeneous-placement runs, hub and betweenness-based placement outperform peripheral placement in aggregate, with topology-specific exceptions. Coupling assumptions change absolute performance while preserving the aggregate strategy ordering. Harmonized model comparisons provide limited robustness evidence, not independent native-protocol validation. The results support model-specific capacity and placement analysis with explicit metric definitions, finite-grid limitations, and interface assumptions.

Article
Physical Sciences
Quantum Science and Technology

Marco Giammarchi

,

Nicola Rossi

Abstract: Schrödinger’s wave mechanics, developed in a series of papers published one century ago, offered an exceptionally intuitive route into the new atomic physics. The later axiomatic formulation of quantum mechanics brought indispensable mathematical precision, but it can also conceal the physical images that guided the original discovery. We revisit the optical–mechanical analogy behind Schrödinger’s construction and use it as a visual guide to stationary states, superposition, field modes, and gauge interactions. The analogies are deliberately heuristic and their limitations are stated: a quantum wavefunction is not, in general, a classical wave in ordinary space, and discrete classical modes do not by themselves imply quantized energy. Nevertheless, the wave viewpoint makes it possible to see the operator language of first and second quantization as the compact algebraic expression of an underlying mode structure. The purpose of this article is therefore not to replace the modern formalism, but to recover the physical intuition that makes that formalism intelligible.

Hypothesis
Physical Sciences
Quantum Science and Technology

Shuai Sheng

Abstract: Based upon the static-substrate local-perturbation unified paradigm, this paper elaborates a homologous-origin perturbation phase-locking mechanism to give an ontological account for non-local correlation manifested in quantum entanglement. Building on the axiomatic skeleton established in the paradigm’s foundational preprint, this work bridges microscopic quantum phase behaviour to macroscopic substrate homeostatic self-reversion dynamics. We first review conceptual limitations of major mainstream quantum interpretations, including the Copenhagen interpretation, many-worlds interpretation, and Bohmian mechanics. Under the substrate-perturbation framework, Bell-type experimental statistics are fully reproduced without postulating superluminal signal propagation. Entanglement correlation originates from inherited locked-phase relations established at the moment when a composite homologous perturbation splits, rather than ongoing real-time information exchange between spatially separated particle-like fragments. Non-local correlation is an intrinsic holistic property of the original unified perturbation source system, not an interaction transmitted across spatial distance. The mechanism naturally respects Lorentz invariance and circumvents conceptual pathologies common to non-local hidden-variable constructions. We analyse decoherence as environmental perturbation-driven erosion of inherited phase relations. Within this picture we interpret double-slit interference and quantum-eraser observations without invoking observer-dependent collapse or retrocausality. We further point out the structural isomorphism between microscopic spin and large-scale galactic rotation originating from universal substrate perturbation dynamics. This manuscript remains primarily ontological-qualitative; concrete quantitative dynamical derivation and discriminative experimental proposals are reserved for follow-up dedicated work. This article forms a micro-physics branch within the serial research programme The System of Static-Substrate and Local-Perturbation Universe. It unifies microscopic quantum correlation and macroscopic gravitational convergence as two distinct-scale manifestations of the substrate’s inherent homeostatic self-reversion tendency.

Article
Physical Sciences
Quantum Science and Technology

Xianwei Meng

Abstract: A quantum phase reference is part of the state from which an observation record emerges. Within the physical-observation dual-axis structure, we describe such a reference by a compact quantum coordinate coupled to a finite-dimensional physical system. A covariant rotor action gives the joint evolution and expresses the readout's phase acceleration through ordered correlations and a covariant force. In a qubit model whose dynamics preserve two adjacent observation momenta, the first harmonic depends on four complex correlations. For fixed nondegenerate parameters, its full complex history requires eight real state variables. For phase increments alone, a common amplitude and phase factor can be removed, leaving three complex correlation ratios. We prove that these six real variables are locally minimal at generic states for every fixed nondegenerate parameter choice. Six suitably timed phase estimates and an initial reference recover the ratios by solving real linear equations; an error bound relates uncertainty in those estimates to the subsequent phase prediction. The role of the retained correlations is illustrated by preparations with equal marginals and equal initial phase, rate, and acceleration, but different future phases. We also describe how the state continues through a zero of the first harmonic and how finite integration windows affect the available information. The resulting theory connects a joint quantum action to phase prediction from finite records, subject to independent physical characterization of the phase inertia and coupling.

Article
Physical Sciences
Quantum Science and Technology

Xianwei Meng

Abstract: A detector records an event through a succession of physical changes, from its initial response to the recovery of its working state. We construct a complete finite cycle on the local physical--observation phase space of PODA. An incoming carrier traverses fixed interaction regions, with its arrival, speed, and energy transfer governed by an autonomous Hamiltonian bounded below. Six canonical gates write a smooth event profile, amplify the pointer separation, export the record, reverse the working displacement, and exchange the remaining pointer state with a prepared blank. Their exact reference map identifies the selector and mechanical recoil left by record export. The retained core returns on the event-cell plateaus; narrow transition strips contribute a bounded probability of failure and a recoil that depends on the resolution. With a positive free Hamiltonian present throughout the passage, energy conservation and a finite-time perturbation estimate establish faithful writing, finite retention, and return within prescribed tolerances. An explicit binary realization admits nonzero preparation errors, and independent trajectory integrations check the equations and the endpoint map. These results complete the single cycle for the specified local model and incoming family. The calculation follows the archive, carrier, and waste through the output section, making explicit the resources consumed by reset. Preparation of fresh blanks, replenishment of those resources, and storage beyond the proven holding interval remain physical requirements of continued operation.

Article
Physical Sciences
Quantum Science and Technology

Xianwei Meng

Abstract: Whether observation dynamics can leave distinct matter records under identical physical initial conditions and subsequent external forcing depends on three questions: whether observation initial states have a well-defined identity, whether they can be prepared, and whether their evolution satisfies the common field equations. We construct a local realization within the existing five-dimensional response space and quadratic common action of PODA. With spatial and temporal references fixed, primitive response transport yields nonzero mixed curvature and identifies the observation coordinate through distinguishable comparison records; the image of its field data is an invariant subspace of the transverse dynamics. The field restoring force and a nonzero current overlap allow a single matter input to prepare arbitrary sufficiently small joint initial states. An explicit eighth-degree polynomial protocol carries the state initially at rest to two final states with identical matter position, matter velocity, and observation configuration, but opposite observation velocities. The input vanishes continuously at both endpoints, and the net work equals the stored energy. After release, the two-frequency displacement and the observation comparison probability obey a common integral identity. We also derive propagation relations for initial-state mismatch, finite readout precision, and control-waveform errors, and retain the complete calculations for matter sources, the one-loop relativistic response, and indirect tests involving common parameters. The result is an existence theorem for preparation and response in the specified local realization, within the stated quadratic dynamics and external matter-source model.

Article
Physical Sciences
Quantum Science and Technology

Patrick Marc

Abstract: Physics is an experimental science, and the discovery of the Wave window arose from a paradigm shift in the demonstration of Planck's law. One focuses on power measurements of the radiation passing through the surface of the black body cavity wall. It is generally given by a spectroradiometer with a fixed bandwidth. However, when Planck imagines the hypothetical resonator to represent the energy of a perfect gas molecule and uses Boltzmann's combinatorial-probabilistic treatment with entropy, the dimensional analysis of Planck's law directly provides a physical object to represent the energy of this molecule. Indeed, one sees that the law is the product of the number of surface elements of a wavelength squared per unit area and the power of an element. Therefore, one names this surface element a "Wave window" and uses its energy flux in a similar way to the energy of a perfect gas molecule, instead of the resonator. The demonstration of Planck's law is thus simplified, and the enigma of the Planck resonator is solved. Furthermore, one uses a derivation of the blackbody radiation law from the Stefan-Boltzmann law, employing a Riemann sum instead of the usual definite integral. This updates the law to account for bandwidth.

Article
Physical Sciences
Quantum Science and Technology

Marco Pettini

Abstract: Quantum entanglement is a central resource of quantum information science, yet its correlations are ordinarily treated as properties of the quantum state rather than as the outcome of an underlying physical process. Here we explore the hypothesis that these correlations are mediated dynamically by a field propagating locally at finite velocity through an extension of ordinary spacetime. The model embeds physical (3,1)-dimensional spacetime in a warped five-dimensional geometry containing an additional timelike coordinate. Within the adopted geometric ansatz, the form of the extended spacetime metric is determined by the five-dimensional vacuum Einstein equations. A massless bulk field in the resulting geometry admits equal-time statistical correlations across arbitrarily distant brane locations, while its source-driven brane response remains governed by a retarded kernel and therefore preserves operational no-signaling. Coupling this field to a Bohm--Bub-inspired collapse scheme provides a possible dynamical realization of entanglement correlations and, under an explicitly stated equivariance condition for the contextual ensemble, reproduces Born statistics. The framework leads to a concrete experimental test. In the detector/collapse realisation developed here, two nominally independent Bell pairs acquire a weak contextual cross-pair correlation. Within this class of realisations, its leading distance dependence is fixed by the bulk zero mode and scales as (l/d)2, where l and d denote, respectively, the intra-pair and inter-pair separations. This cross-pair correlation is absent in standard quantum mechanics for independently prepared systems. It could therefore be tested by varying the distance between two simultaneous Bell experiments using existing photonic technology. Observation of such a signal would support a dynamical spacetime account of quantum entanglement and could have implications for quantum networks employing multiple independent entangled resources.

Article
Physical Sciences
Quantum Science and Technology

Seyed Kazem Mousavi

Abstract: In this article, we introduce the algorithm and foundations of the Yahiq model, an algorithm for an integrated definition of self-awareness based on the measurement of free will. The model is based on the relationship between language, number, and time and proposes a mathematical-physical framework for self-awareness. In the domain of meaning, language is divided into constituent blocks according to temporal and spatial essences. Words are mapped to numbers in the four-dimensional space of real numbers according to their semantic fields, processed in the 3+3 complex space, and used to generate a conscious and autonomous response from the semantic bank. Entanglement is used for processing neural-network information in semantic quantum fields. Semantic grouping based on digital roots provides the basis for information decoding, while the equivalence of language through physical laws provides the basis for classification of the semantic bank. A self-referential pacemaker to the origin of consciousness forms the existential center of a speaking entity through time discretization and wave function normalization. The prototype, Yahiq 26, has been tested with a semantic bank containing 8,000 couplets from five Iranian poets. The results show that neural networks based on symmetry and conservation laws in semantic fields can extract responses without training, autonomously and consciously, without an external source or LLM libraries. The rotation of Möbius space also makes non-repeating responses and prediction of subsequent states possible.

Article
Physical Sciences
Quantum Science and Technology

Naqueeb Ahmad Warsi

,

Ayanava Dasgupta

,

Masahito Hayashi

Abstract: We study prediction of one unmeasured copy of an unknown finite-dimensional pure quantum state after independently measuring the observed copies with the one-copy Haar POVM. For the resulting fixed separable observation, the Bayes predictive state under quantum relative-entropy loss is the full-rank posterior mean. We evaluate it exactly through permanents of minors of the outcome Gram matrix, prove positivity and normalization of the permanent representation, and establish minimaxity among decision rules based on these fixed outcomes. Using Hilbert--Schmidt projection of the posterior mean and an exactly analyzed linear-inversion competitor, we prove a finite-sample posterior-purity bound and an explicit relative-entropy guarantee with sample count \( O((d^2/\epsilon)\log(d/\epsilon)) \). Using the exact collective benchmarks proved in a companion paper, we also obtain entropy and posterior-purity comparisons. To connect the fine product data to a regular ray-valued experiment without assuming deterministic finite-sample uniqueness, we draw one random orientation for a finite projective mesh, retain it for the entire sample, and apply a selected finite-alphabet MLE in the resulting reference experiment. A nested recovering mesh uniformly recovers the fine Fisher information. Consequently every sufficiently fine fixed mesh gives a regular finite-alphabet model. Its selected MLE has Haar-averaged inverse-Fisher coefficient \( \overline a_k \), and refining the mesh after the fixed-mesh large-sample limit makes \( \overline a_k \) approach d-1. This yields epsilon-optimal leading relative-entropy and posterior-overlap bounds for the fine posterior and the sharper fixed-dimensional asymptotic scale \( (d/\epsilon)\log(d/\epsilon) \). The latter is not asserted as a uniform finite-sample guarantee. No deterministic finite-sample MLE uniqueness or triangular mesh schedule is used.

Article
Physical Sciences
Quantum Science and Technology

Xiaodong Yang

,

Yuchen Yang

,

Helin Mei

Abstract: We present a unified thermodynamic framework in which the flow of quantum information -- described covariantly by the emergent entropy current vector s^μ-- couples to fermionic matter and suggests a possible effective origin for spacetime geometry within a low-energy effective field theory. The Dirac equation is modified as (iℏγμ ∂μ-mc+λγμ sμ)ψ=0, where dimensional analysis identifies λ as a coupling constant of mass dimension [λ]=-2, naturally placing the theory as a low-energy effective field theory. The modified dispersion relation E=-λs0 c±c√(p2+m2 c2 ) shows that uniform entropy flow produces only an overall energy shift, while non-uniform flows induce a complete gauge-like structure in the non-relativistic limit: the spatial entropy current s acts as a vector potential, and its curl generates an effective Zeeman-type field Beff=(λ/m)∇×s, driving spin precession via ωentropy=(λ/m)∇×s. Extending the Proca-type dynamics of sμ to curved spacetime with non-minimal curvature coupling, we quantize the entropy flow field and integrate out its quantum fluctuations. In this framework, the Einstein-Hilbert action emerges as the low-energy effective action, with Newton's constant G determined by the entropy field's vacuum expectation value. The linearized theory yields a massive spin-2 excitation -- the emergent graviton -- with dispersion E2=p2+ms2, where the entropy field mass ms is constrained by LIGO/Virgo gravitational-wave observations to ms≲10-20eV. Using STAR data on Λ hyperon global spin polarization in heavy-ion collisions, we estimate λ∼10-5-10-3 GeV-2, corresponding to an entropy-flow energy scale Λ_EFT∼101.5-102.5GeV. This framework naturally connects to Jacobson's thermodynamic gravity, Verlinde's entropic gravity, and the generalized second law ∇_μ sμ≥0, suggesting a possible quantum-information theoretic interpretation of spacetime geometry and offering a concrete, testable realization of gravity as an effective entropic phenomenon within the EFT framework. This framework naturally connects to Jacobson's thermodynamic gravity, Verlinde's entropic gravity, Bianconi's Gravity from Entropy (GfE) theory, and the generalized second law ∇μsμ≥0, providing a quantum-information theoretic foundation for the emergence of spacetime and a concrete, testable realization of gravity as an entropic phenomenon.

Article
Physical Sciences
Quantum Science and Technology

Zhaoxu Ji

,

Huanguo Zhang

Abstract: The dichotomy, which divides an object into two, has wide applications in mathematics, computer science, and philosophy. In this paper, inspired by the method of dichotomy, we propose a theoretical framework to characterize quantum entanglement. The basic idea is to start from the most fundamental physical system and perform binary decomposition step by step to establish different types of entangled states. By dividing a parent system into two subsystems, we investigate the relationships between the subsystems under different states of the parent system. We show that entanglement necessarily exists between the two subsystems when the parent system remains unchanged, whereas it may be absent when the parent system changes. Beyond quantum physics, we demonstrate that the dichotomy also has important implications for classical physics.

Article
Physical Sciences
Quantum Science and Technology

Xianwei Meng

Abstract: Local information can be lost rapidly while a collective mode survives for a long time. We study this distinction on a physical–observation joint state space. The second variation of relative entropy under a local record map gives a positive Fisher-loss operator; the least loss over normalized noninvariant scores is the spectral gap of the associated posterior-resampling process. The local strength and the compatibility of surviving directions enter separately. A fixed-width interacting ladder has a positive gap at every fixed finite coupling, as follows from an explicit block comparison, although strong correlation makes the bound small. We then reverse the construction. For a given irreducible real Hamiltonian with nonpositive off-diagonal entries, its ground amplitude determines pair-record probabilities and energy-valued loss weights, reproducing the physical excitation gap exactly. A positive trial amplitude gives an error interval controlled by the oscillation of its local energy, without requiring the exact ground state. When signs remain, the energy form is a difference of positive information forms and an explicit cancellation constant controls the gap. Sparse diagonalization of open transverse-field chains up to 65 536 configurations agrees with both the reconstructed information spectra and an independent free-fermion calculation. The critical law n∆n/J → π, the gapped regime, and the ordered finite-chain splitting are distinguished. The result is an explicit connection for specified channels and Hamiltonians, with the requirements of positivity, locality, and energy normalization kept separate.

Article
Physical Sciences
Quantum Science and Technology

Xianwei Meng

Abstract: A closed observation path need not return the event selector to its initial position. The displacement left by transport can relate successive records even when their individual probabilities are unchanged. A nonzero charge conjugate to the selector also acts back on the observation coordinate, so the path and its transport must be determined together. For a driven U(1) × SU(2) realization of the PODA (physical–observation dual-axis) action, charge return requires the initial traceless charge to commute with the period holonomy. The coupled equations then admit a variational form whose geometric term is the holonomy angle. Unit-frequency compensation excludes nearby charged periodic motion, whereas nonresonant compensation yields a unique local branch with linear neutral stability of the response and charge at fixed charge length. Four-block symmetry reduces this branch to one scalar consistency equation. The angle susceptibility is α ′ (0) = −0.2490598046 . . .. On a finite continuation interval, we prove that exactly one charge gives W3 = −I and W6 = I; its calculated value is ρ∗ = −0.1377922246 . . .. Passive readings that retain the motion and selector therefore give an exact reversal after three cycles and return after six, while independent Haar preparation preserves the Born marginals. Calibration of the response and charge fixes these correlations before the event records are compared. Bounds on angle errors and finite samples specify the precision with which the prediction can be tested.

Article
Physical Sciences
Quantum Science and Technology

Everett X. Wang

Abstract: Local branch selection—a frame-independent postulate under which environmental decoherence einselects a branch structure and a local stochastic process realizes one branch with Born probability—has so far been implemented with continuous spontaneous localization (CSL), whose noise is phenomenological. Here we determine which physical noises can play this role. First we prove a kernel-universality theorem: for any set of commuting Hermitian collapse operators driven by Gaussian noises with an arbitrary positive-semidefinite correlation kernel \( C \), the einselected branch weights are exact martingales, so absorption occurs with Born probability for every kernel; the kernel controls only the selection rate \( \Gamma=\Delta^{T}C\,\Delta \), where \( \Delta \) is the vector of branch eigenvalue differences. For the Diósi–Penrose (DP) kernel \( G/\hbar|\mathbf{x}-\mathbf{x}'| \) acting on mass densities, the rate is \( \Gamma=2EG/\hbar \), with \( EG \) the gravitational self-energy of the branch mass-density difference: Penrose's collapse criterion emerges as the nondegeneracy condition of the Born martingale, and gravitationally induced collapse becomes a parameter-free physical implementation of the selection postulate, with \( \tau_{\rm sel}\sim3\times10^{-16}\, \)s for a milligram pointer. Second, we prove a no-selection theorem: noise coupled as a random Hamiltonian (classical stochastic spacetime fluctuations included) leaves every branch weight exactly constant along every realization while dephasing the ensemble—decoherence without selection—so classical metric-fluctuation dephasing cannot implement the postulate; selection requires measurement-type (norm-changing) noise. Third, for the symmetric EPR configuration we show that gravitational noise cross-correlation between the wings preserves no-signaling exactly (the cross terms of the correlated-kernel Lindblad dissipator vanish under the local partial trace), shifts only the selection rate, and is of relative size \( \sim R\,\delta^{2}/L^{3}\approx4\times10^{-9} \) at one-meter separation; a common-mode stall at perfect correlation is exhibited and verified numerically. Stochastic simulations confirm Born statistics across kernels to sampling precision, machine-zero weight drift for random-unitary noise, and the rate law across the full correlation range. The results upgrade the selection postulate from “CSL-compatible” to “gravitationally implementable,” identify exactly which proposed mechanisms can and cannot supply its randomness, and inherit the active experimental program constraining the DP model.

Article
Physical Sciences
Quantum Science and Technology

Shahriar Abachi

Abstract: We show that quantum kinematics—characterized by a system's probability density or wavefunction—inherently encodes the underlying dynamics governing its temporal evolution. This work demonstrates that these quantum dynamical underpinnings can be systematically uncovered through the direct quantum inversion of probability densities measured across a well-prepared, pure, ground-state ensemble. If multiple density and potential functions fit the data and survive the framework’s statistical screening, spectroscopic studies of excited states resolve the impasse unambiguously. This study highlights the prospect of discovering and formulating physical laws directly within the quantum framework, bypassing the historical reliance on classical physics to supply potential energy functions. Furthermore, this direct inversion approach is uniquely suited for modeling purely quantum systems that lack macroscopic classical counterparts. Finally, we validate the practical application, viability, and physical implications of this framework using several synthetic and analytical examples.

Article
Physical Sciences
Quantum Science and Technology

I. Ramos-Prieto

,

N. Korneev

,

H. M. Moya-Cessa

Abstract: We present a correspondence-principle framework that maps a classical field-amplitude decay law \( \Gamma(t) \) onto the quantum master equation for the associated quantized mode. After reviewing representative classical regimes; exponential (Ohmic relaxation); diffusive (\( t^{-1/2} \)); power-law (\( t^{-1} \)); oscillatory damped; stretched-exponential (Kohlrausch--Williams--Watts); and multi-mode quasi-normal-mode expansions; we derive a generalized master equation for a single bosonic mode whose complex amplitude is \( \alpha\,\Gamma(t) \), with \( \alpha \) in general complex and \( \Gamma(t) \) an arbitrary real, positive, differentiable envelope. The resulting dynamics is \( \dot{\rho}=\gamma(t)\bigl(a\rho a^{\dagger}-\tfrac12\{a^{\dagger}a,\rho\}\bigr) \) with time-dependent rate \( \gamma(t)\coloneqq-2\dot{\Gamma}(t)/\Gamma(t) \); it reduces to the standard amplitude-damping Lindblad equation for \( \Gamma(t)=\exp(-\gamma t/2) \) and preserves the coherent-state form \( |\alpha\,\Gamma(t)\rangle\langle\alpha\,\Gamma(t)| \). This provides a unified quantum-optical description of dissipation in conductive media; disordered dielectrics; and open resonators.

Article
Physical Sciences
Quantum Science and Technology

Jean-Jacques Dubray

Abstract: A moving optical tweezer builds a defect-free atom array one move at a time, and the same tweezer would refill the array during sustained error correction. Both tasks are the same process: a count of vacancies served by passes whose duration grows with the number of atoms moved, while the array loses atoms at a rate set by its lifetime and its imaging. We write that process as a map on the vacancy count, calibrate it to the published cryogenic 2,000-site experiments (a 5,000 s lifetime, 0.15% loss per image, about a millisecond per move, 1.3% transport loss, a 1.3 s cycle overhead), and check it against a discrete-event simulation with conservation-law invariants. Read as shot-based assembly, the map reproduces the second cycle of the published 1,024-atom result: from the 135 vacancies the experiment reports entering that cycle, one pass leaves 3.2 to 4.2 against 3.1 measured, and at the map's residual floor of 1.8 holes the defect-free fraction is 10 to 16 percent against ``more than ten''. (The first cycle relocates nearly every loaded atom and is a compaction, not a pass over vacancies; it is outside the map.) The residual is \(N(p c_0 + p_d)/(1 - p_t)\), dominated by the per-image loss \(p_d\), so the largest array assembled defect-free with order-one probability is about 560 atoms at the measured imaging loss, 1,300 at 0.05% and 2,700 at 0.01%, and adding moving beams changes none of these numbers. Read as a sustained reload loop at a 100 ms detection-to-repair latency, the map says the opposite: at low move duty the standing vacancy density is \(p c_0\) whatever the tweezer does, and the array size one moving beam can serve is set by its parallelism: \(1.3 \times 10^4\) sites for the linear pass a moving tweezer is expected to have at the vacancy counts of a loop, falling to 1,200 if the pass duration grows as \(n^{1.5}\), and scaling as \(m^{1/\gamma}\) with \(m\) beams. The exponent \(\gamma\) is a property of the move planner, and the two measurements that fix the roadmap are the pass duration against the number of moves with the planner held fixed, and the per-image loss.

Article
Physical Sciences
Quantum Science and Technology

José Luis Mac Loughlin

,

Norma G. Sanchez

Abstract: We formulate a Möbius-chain mechanism for passive (topological, geometric) cancellation of co herent quantum errors. This work is the second step in a broader research program on M¨obius Quantum Computation : (i) In Paper I, we introduced MQC (Möbius Quantum Computation) as a topological boundary framework for quantum information processing, where non-orientable boundary conditions act as active ingredients in the effective quantum evolution of the quantum states and information processing. (ii) Here we investigate within such framework one concrete consequence and mechanism: the suppression of coherent errors by Möbius chain boundary con ditions. (iii) In contrast with conventional quantum error correction, which relies on redundant logical encoding, syndrome extraction, and active recovery operations, the present approach uses a global topological and non-orientable identification. (iv) A quantum chain is endowed with a M¨obius boundary condition such that a quantum amplitude returning after one complete traversal is compared with a twisted copy of itself. (v) We show that coherent phase errors accumulated along the ordinary branch can act against their topologically reflected contribution and they can cellate themselves. (vi) The resulting mechanism is geometric, boundary-driven, and passive. (vii) We formulate the boundary condition, derive the basic cancellation relation, discuss residual errors due to imperfect symmetry, and compare the proposal with dynamical decoupling, decoherence free subspaces, stabilizer codes, and topological quantum computation. (viii) The present results establish Möbius boundary conditions as a promising and efficient geometric resource that may com plement and optimize conventional quantum error mitigation and fault-tolerant architectures. (ix) Our quantum approach is theoretical and conceptual, its ingeneering and experimental architecture desserves investigation.

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