We propose a transport-enabled program of decoherence cartography: the inference of environment-conditioned decoherence functionals for a localized stored charged-particle qubit across distinct laboratory sites after controlling for measured technical noise. The framework is formulated generically for transportable matter and antimatter qubits, while being motivated in particular by recent progress in coherent spectroscopy of a single antiproton spin and by the physical transport of trapped antiprotons in a portable cryogenic Penning-trap. For each site and control sequence, we formulate the experiment as a hierarchical null test in which the measured coherence of the localized qubit is decomposed into a nuisance contribution predicted from monitored magnetic, vibrational, thermal, timing, and control channels, together with a residual environment-conditioned functional. In the conservative null model, transport and relocation induce only deterministic phases and standard open-system dephasing fixed by measured spectra. A residual signal that remains stable under revisits, control sequence changes, and site permutations would define an irreducible site-dependent decoherence effect and motivate targeted follow up searches for new physics, manifested in beyond the Standard Model and cosmology-motivated sectors. We formulate the operational observables, filter-function framework, identifiability conditions, dictionary examples, and benchmark sensitivities required to render both null and non-null outcomes interpretable.
We propose a transport-enabled program of decoherence cartography: the inference of environment-conditioned decoherence functionals for a localized stored charged-particle qubit across distinct laboratory sites after controlling for measured technical noise. The framework is formulated generically for transportable matter and antimatter qubits, while being motivated in particular by recent progress in coherent spectroscopy of a single antiproton spin and by the physical transport of trapped antiprotons in a portable cryogenic Penning-trap. For each site and control sequence, we formulate the experiment as a hierarchical null test in which the measured coherence of the localized qubit is decomposed into a nuisance contribution predicted from monitored magnetic, vibrational, thermal, timing, and control channels, together with a residual environment-conditioned functional. In the conservative null model, transport and relocation induce only deterministic phases and standard open-system dephasing fixed by measured spectra. A residual signal that remains stable under revisits, control sequence changes, and site permutations would define an irreducible site-dependent decoherence effect and motivate targeted follow up searches for new physics, manifested in beyond the Standard Model and cosmology-motivated sectors. We formulate the operational observables, filter-function framework, identifiability conditions, dictionary examples, and benchmark sensitivities required to render both null and non-null outcomes interpretable.
This short paper presents an experimentally testable prediction about coherence management in quantum systems, derived from a general field-theoretic framework.The result is intentionally narrow: it identifies a specific environmental parameter that should influence qubit stability, decoherence rates, and the performance of trapped-atom, superconducting, and photonic platforms. The paper outlines: a clear physical mechanism, the expected direction and magnitude of the effect, conditions under which the signal should be strongest, how to distinguish it from noise or substrate-dependent artifacts, and a set of simple experiments that current quantum laboratories can run immediately. No new hardware is required — only controlled variation of coherence-relevant environmental parameters that most labs already monitor.If verified, the effect offers a new handle for improving qubit lifetimes and reducing error rates, and provides an independent probe of how macroscopic coherence affects quantum information flow. The paper is designed to be fully falsifiable.A null result would place clean constraints on the underlying framework; a positive result would open a new experimental pathway for coherence engineering.
We present a laboratory-constrained phenomenological framework linking controlled quantum coherence experiments to large-scale cosmological observables. Using experimental results from superconducting qubits subjected to structured low-frequency toroidal magnetic fields, we define a dimensionless coherence proxy, κ_lab = 0.728 ± 0.020, which captures both temporal decoherence suppression and spatial field uniformity. This observable is derived directly from measured enhancements in qubit relaxation time (T1), without modification to materials or circuit design. We then introduce a calibrated laboratory-to-cosmology bridge, mapping κ_lab into an effective coupling parameter within a coherence-driven cosmological framework. This mapping enables a quantitative pre-data prediction for an environmental modulation of the Hubble expansion rate:ΔH0/H0 = 0.73^{+0.21}_{-0.18}%,for the benchmark regime m_φ ~ H0 and α = 1. The key contribution of this work is not the assumption of a confirmed cross-scale mechanism, but the construction of a transparent and falsifiable bridge between a laboratory-measured coherence observable and a cosmological testable quantity. The prediction lies within the sensitivity range of DESI Year 3, enabling a clear binary test: • Detection of a ~0.5–1.0% environmental step supports the viability of scale-bridging coherence dynamics.• A null result constrains the phenomenological bridge while preserving the laboratory result as an independent demonstration of environmental coherence engineering. This approach establishes a new paradigm in which controlled quantum systems can serve as quantitative anchors for testing phenomenological extensions of large-scale physics, connecting laboratory coherence and cosmological expansion in a falsifiable framework.
Quantum Fractal Spacetime (QFS) has been proposed as a scale-invariant framework in which the smooth macroscopic spacetime of general relativity emerges from a nondifferentiable microscopic geometry with effective Hausdorff dimension D ≈ 2. Existing QFS work suggests that scale-dependent path lengths, vacuum fluctuations, and reduced ultraviolet dimensionality could generate experimentally accessible noise and decoherence in quantum systems. Here we develop a falsifiable test program that maps QFS-inspired spacetime fluctuations onto observables available in present-day superconducting and trapped-ion quantum hardware. We combine two modern descendants of Wheeler’s spacetime-foam intuition—holographic-like correlated geometric noise and intrinsic decoherence sourced by quantum spacetime itself—into a common effective qubit-noise framework. In this description, QFS contributes both local colored dephasing and nonlocal phase correlations, which can be probed with Ramsey interferometry, dynamical decoupling, rotating-frame relaxometry, multilevel spectroscopy, and cross-qubit covariance analysis. The resulting near-term experimental signatures are: (i) an irreducible residual 1/fα phase-noise floor that survives aggressive subtraction of known technical noise, (ii) decoherence rates that scale systematically with transition energy or qudit level, and (iii) spatially correlated phase fluctuations across qubits or devices that cannot be explained by shared electronics, cryogenic vibrations, cosmic rays, or environmental backgrounds. We show that superconducting processors and trapped-ion platforms provide complementary leverage: transmons offer high bandwidth, dense multiplexing, and multilevel access, while trapped ions provide extreme coherence, narrow spectroscopic control, and substrate-independent cross-checks. We further place the proposal in the context of existing bounds from interferometric holographic-noise searches and neutrino decoherence constraints, arguing that qubit experiments are not redundant because they probe internal phase evolution of bound quantum systems rather than free propagation alone. The framework developed here turns near-term quantum processors into tabletop sensors of QFS-inspired spacetime phenomenology and, at minimum, enables meaningful bounds on a broad class of fractal-spacetime couplings.
This preprint develops a staged framework for testing whether matter-wave dynamics contain a source-dependent reciprocal contribution beyond ordinary phase evolution. The conceptual motivation comes from the asymmetry of standard pilot-wave theory, in which the wave guides material configurations without an established reciprocal action of those configurations on the wave. The proposed approach represents any candidate back-reaction through an effective scalar–vector connection and uses matched matter-wave states with opposite phase gradients as a symmetry-based lock-in test. Ordinary phase motion reverses between the two states, whereas a source-fixed reciprocal contribution would remain as a measurable common-mode residue. The experimental program begins with calibration using a known synthetic gauge field in an ultracold-atom platform. It then advances to a source-free null campaign, followed by a blinded four-state experiment combining phase reversal with reversal of a compensated polarized-spin source. Candidate signals would be tested through source parity, internal-state and species dependence, distance scaling, modulation-frequency response, circulation, curl, and spacetime-holonomy measurements. A coherent counterpropagating Bragg-pair readout and numerical source-to-signal benchmarks are developed to estimate the required phase sensitivity and identify dominant backgrounds. The interpretation is deliberately hierarchical. A nonzero residue would first indicate an unexplained source-dependent interaction; additional evidence would be required to establish connection-like behavior, compatibility with an axial-vector or contorsion effective theory, or genuine pilot-wave back-reaction. Null results would still provide model-independent bounds. If interested please request experimental brief, source code, numerical data, figures, and reproducibility documentation.
Quantum decoherence is conventionally understood as an environment-induced loss of phase coherence, described operationally through reduced density matrices and effective noise models. While this framework successfully captures how decoherence occurs, it leaves open the deeper physical question of why quantum phase coherence is generically fragile and lacks intrinsic protection. In this work, we propose a reinterpretation of decoherence within the Temporal Theory of the Universe (TTU), where time is treated as a physical field rather than an external parameter. We argue that decoherence can be understood as a manifestation of temporal-field inhomogeneity: a breakdown of global phase synchronization caused by spatial and temporal gradients of the underlying time field. Within this perspective, environmental noise and non-Markovian effects emerge as effective descriptions of deeper temporal misalignment rather than fundamental sources of randomness. We demonstrate how temporal-field inhomogeneity naturally induces phase damping in the reduced density matrix, leading to decoherence without invoking irreversible information loss. The framework remains fully compatible with standard quantum mechanics at the operational level, while offering a novel physical substrate for coherence, noise, and temporal memory effects. Finally, we outline several experimentally discriminable consequences of this interpretation, positioning it as a falsifiable and conceptually economical extension of existing decoherence theory. Keywords: quantum decoherence; temporal field; foundations of quantum mechanics; open quantum systems; phase coherence; density matrix; Lindblad master equation; non-Markovian dynamics; time as a physical field; quantum foundations. 1.Introduction 1.1.The decoherence problem as a foundational issue in quantum theory 1.2.Standard environmental and information-theoretic interpretations 1.3.Motivation for an alternative physical substrate 1.4.Scope and limits of the present work (interpretational, not engineering) 2. Decoherence in Standard Quantum Theory 2.1 Density matrix formulation and phase damping 2.2 Environment-induced decoherence and pointer states 2.3 Markovian vs non-Markovian regimes 2.4 Conceptual gap: why phase coherence is generically fragile Key point: standard theory describes how decoherence happens, but not why phase coherence lacks physical protection. 3. Temporal Field Framework (TTU Perspective) 3.1 Time as a physical field τ(x) rather than a parameter 3.2 Local temporal gradients and phase evolution 3.3 Global time-phase coherence as a physical condition 3.4 Relation to hyper-time / meta-time extensions (conceptual overview) 4. Reinterpreting Decoherence as Temporal-Field Misalignment 4.1 Phase evolution in inhomogeneous temporal backgrounds 4.2 Decoherence as loss of global time-phase synchronization 4.3 Effective noise as manifestation of temporal-field fluctuations 4.4 Comparison with environmental noise models Central thesis: Decoherence reflects not fundamental randomness, but breakdown of coherent phase evolution due to temporal-field inhomogeneity. 5. Relation to Known Quantum Phenomena 5.1 Non-Markovian dynamics as temporal memory effects 5.2 1/f noise and slow temporal drift 5.3 Temporal entanglement and time-correlated errors 5.4 Distinction from collapse models and hidden variables 6. Conceptual Advantages of the Temporal-Field Interpretation 6.1.Physical substrate for phase coherence 6.2.Natural explanation of environment sensitivity 6.3.Unified language for decoherence, noise, and drift 6.4.Compatibility with standard quantum formalism 7. Testable Consequences and Falsifiable Signatures 7.1.Test 1 — Temporal Gradient Sensitivity 7.2.Test 2 — Non-Markovian Residual Structure 7.3.Test 3 — Global Synchronization Effects 8. Limitations and Open Questions 8.1.No claim of immediate technological implementation 8.2.No replacement of quantum error correction 8.3.Relation to gravity and cosmology remains theoretical 8.4.Need for independent experimental discrimination 9. Discussion 9.1.Positioning relative to mainstream decoherence theory 9.2.Relation to other time-based approaches 9.3.Why temporal ontology matters for quantum foundations 10. Conclusion 10.1.Summary of reinterpretation 10.2.Why this framework is explanatory rather than speculative 10.3. Outlook for foundational and experimental research Reference Appendix A: Dimensional and Conceptual Consistency Check
Entangled qubits transported through space is a key element in many prospective quantum information systems, from long-distance quantum communication to large modular quantum processors. The moving qubits are decohered by time- and space-dependent noises with finite extent of correlations. Since the qubit paths are interrelated, the phase fluctuations experienced by the qubits exhibit peculiar correlations, which are difficult to analyze with the conventional theory of random processes. We propose an approach to this problem based on the concept of trajectories on random sheets. We establish its efficacy with a specific example of the electron spins shuttled in semiconductor structures, and derive explicit solutions, revealing the role of unusual noise correlations. We also demonstrate how the analysis of noise correlations can enhance the shuttling fidelity, by studying transport of two entangled spins encoding a logical qubit. The proposed approach enabled us to specify the favorable conditions for this encoding, and find a particularly beneficial shuttling regime. We also describe application of this approach to other shuttling scenarios, and explain its utility for analysis of other types of systems, such as atomic qubits and photons in quantum networks.