Newtonian Gravitational Curvature-Induced Entanglement Generation

• URL: http://arxiv.org/abs/2608.30075v1
• Date: Sun, 30 Aug 2026 22:50:38 GMT
• Title: Newtonian Gravitational Curvature-Induced Entanglement Generation
• Abstract summary: We show that gravitational curvature can control the generation of nonlocal quantum correlations in a hybrid qubit-mechanical device.<n>The scheme demonstrates gravitational control of a quantum interaction and provides a route to curvature sensing based on a nonlocal two-qubit phase.
• Score: 0.9590956574213351
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We show that gravitational curvature can control the generation of nonlocal quantum correlations in a hybrid qubit-mechanical device. The tidal field of a nearby source mass modifies the susceptibility of a shared mechanical oscillator, thereby tuning an oscillator-mediated qubit-qubit interaction and the resulting entangling phase. An exact treatment of the dynamics reveals stroboscopic geometric gates whose accumulated phase is directly sensitive to gravitational curvature. Treating the curvature as an unknown parameter, we derive the ultimate quantum limit for its estimation and identify a parity-based measurement that saturates this bound. Solving the full master equation with the mechanical mode retained explicitly, we find that thermal occupation of the mediator suppresses entanglement between the closure times but is undone at each closure, exactly in the unitary limit for any initial mechanical temperature, so that ground-state cooling of the oscillator is not a prerequisite for the protocol. Mechanical damping and qubit dephasing behave differently: they leak branch information irreversibly to the environment, and it is the heating and dephasing rates, rather than the bath occupation alone, that limit the entanglement visibility and the number of usable interrogation loops. In contrast to gravity-mediated entanglement proposals, entanglement is generated by the mechanical oscillator while gravity acts solely as a classical control field. We quantify the achievable curvature parameters; all curvature dependencies are analytic, allowing for exact rescaling of the results. The scheme therefore demonstrates gravitational control of a quantum interaction and provides a route to curvature sensing based on a nonlocal two-qubit phase rather than on local phase measurements.

Related papers

• Large-scale quantum simulations of dissipative spin-1/2 Heisenberg chains [35.863587184853394]
  A quantum many-body system coupled to an environment relaxes to a nonequilibrium steady state that can sustain order with no equilibrium counterpart.<n>The dissipative spin-1/2 Heisenberg chain is a benchmark example for nonequilibrium steady state physics.<n>Here we simulate the Lindblad dynamics of chains of up to 50 sites on the superconducting processor ibm_kingston.
  arXiv  Detail & Related papers  (2026-09-14T18:00:00Z)
• Topology from Decoherence [39.407739937584104]
  We show that decoherence can induce topological phenomena.<n>We demonstrate this in a lattice system subject to environment-induced dephasing.<n>Our results establish correlated quantum noise as a route to topology in open many-body systems.
  arXiv  Detail & Related papers  (2026-07-08T18:00:04Z)
• Quantum optomechanics of lossy bodies: general approach and structured squeezed vacuum effects [51.56484100374058]
  We investigate the overall optomechanical force experienced by a macroscopic lossy object in free space under external quantum illumination.<n>By driving the scattering field with an anisotropic, multimode squeezed vacuum state, the spatial profile of the electromagnetic quantum fluctuations can be engineered to exhibit broken rotational symmetry.<n>We establish a general formalism for macroscopic quantum optomechanics that operates beyond the constraints of thermal equilibrium.
  arXiv  Detail & Related papers  (2026-04-07T13:25:43Z)
• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• A novel quantum memory effect and thermal modulation in graviton-mediated entanglement [0.13999481573773068]
  We show that quantized gravitons generate entanglement and leave behind a persistent quantum memory even after the wave has passed.<n>Results identify experimentally relevant markers of gravitons and provide a framework for exploring how finite-temperature environments may help uncover the quantum nature of gravity.
  arXiv  Detail & Related papers  (2025-10-13T07:16:44Z)
• Quantum Sensing from Gravity as Universal Dephasing Channel for Qubits [41.96816488439435]
  WeExploit the generic phenomena of the gravitational redshift and Aharonov-Bohm phase.<n>We show that entangled quantum states dephase with a universal rate.<n>We propose qubit-based platforms as quantum sensors for precision gravitometers and mechanical strain gauges.
  arXiv  Detail & Related papers  (2024-06-05T13:36:06Z)
• Limits on inference of gravitational entanglement [0.6876932834688035]
  We study semi-classical models of the atom interferometer that can reproduce the same effect. We show that the core signature -- periodic collapses and revivals of the visibility -- can appear if the atom is subject to a random unitary channel.
  arXiv  Detail & Related papers  (2021-11-01T13:35:00Z)
• Constraints on probing quantum coherence to infer gravitational entanglement [0.0]
  Gravity mediated entanglement generation so far appears to be the key ingredient for a potential experiment. With measurements performed only on the atoms, a coherence revival test is proposed for verifying this entanglement generation. We explore formulations of such a protocol, and specifically find that in the envisioned regime of operation with high thermal excitation, semi-classical models, where there is no concept of entanglement, also give the same experimental signatures.
  arXiv  Detail & Related papers  (2021-06-15T15:29:35Z)
• Hamiltonian Model for Fault Tolerant Singlet-Like Excitation: First Principles Approach [0.0]
  We investigate the reduced state of two qubits coupled to each other via a common heat bath of linear harmonics. We search for evidence of fault-tolerant excited qubit states. We emphasize the central role of the Lambshift as an agent responsible for fault tolerant excitations.
  arXiv  Detail & Related papers  (2021-05-20T14:14:00Z)
• Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
  The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
  arXiv  Detail & Related papers  (2020-07-20T18:00:02Z)
• Towards Nonperturbative Solution of Quantum Dynamics : A Hamiltonian Mean Field Approximation Scheme with Perturbation Theory for Arbitray Strength of Interaction [0.0]
  We introduce a non perturbative general approximation scheme (NGAS) that can handle interactions of any strength in quantum theory.<n>We put this scheme to the test on one dimensional anharmonic interactions using the harmonic approximation.<n>The flexibility of the method is demonstrated when we swap the input Hamiltonian for that of an infinite square well.
  arXiv  Detail & Related papers  (2019-09-27T06:13:46Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.