Phase-controlled bipartite and tripartite entanglement and Bell nonlocality in a closed-loop optomechanical system

• URL: http://arxiv.org/abs/2609.14577v1
• Date: Sun, 13 Sep 2026 15:01:18 GMT
• Title: Phase-controlled bipartite and tripartite entanglement and Bell nonlocality in a closed-loop optomechanical system
• Abstract summary: We generate and manipulate bipartite and tripartite entanglement and Bell nonlocality in a closed-loop three-mode optomechanical system.<n>We find that the tripartite Bell nonlocality can persist even when the genuine tripartite entanglement is absent.<n>Our results establish a comprehensive framework for generating, controlling, and verifying multipartite quantum correlations.
• Score: 1.0319514283679496
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a novel scheme to generate and manipulate bipartite and tripartite entanglement and Bell nonlocality in a closed-loop three-mode optomechanical system, where two optical modes are simultaneously coupled to a mechanical mode via typical optomechanical interactions and also coupled to each other through field transmission. This configuration gives rise to a phase-sensitive coupling, in which the relative phase directly controls the population distribution between two optical modes, enabling coherent redistribution of quantum correlations. By tuning this relative phase, we achieve deterministic switching of bipartite entanglement between two optical-mechanical pairs, as well as tunable genuine tripartite entanglement among three modes. Employing the displaced-parity measurement, we construct both the bipartite and tripartite Bell inequalities in phase space and observe maximal violations of approximately $2.32$ and $3$, respectively, which coincide exactly with the values achievable for ideal bipartite and tripartite Einstein-Podolsky-Rosen states. Counterintuitively, we find that the tripartite Bell nonlocality can persist even when the genuine tripartite entanglement is absent, providing deeper insight into the relationship between these two types of quantum correlations. Furthermore, we systematically analyze the effects of mechanical dissipation and thermal noise, identifying the parameter regions where Bell violation survives under realistic experimental conditions. Our results establish a comprehensive framework for generating, controlling, and verifying multipartite quantum correlations, paving the way towards phase-tunable quantum networks and noise-resilient tests of quantum foundations.

Related papers

• Dark-Mode Control of Contrasting Entanglement and Bell Nonlocality between Mechanical Oscillators [2.367128792229767]
  We propose an optomechanical system for generating pure and entangled two-mode squeezed mechanical steady states.<n>A central result is that optomechanical coupling imperfections can enhance mechanical entanglement while simultaneously suppressing Bell nonlocality.<n>Our proposed scheme serves as an attractive platform for the deployment of continuous-variable teleportation and high-fidelity quantum communication.
  arXiv  Detail & Related papers  (2026-08-24T11:22:10Z)
• Entanglement and Quantum Coherence in Coupled Double Quantum Dots under Markovian and Non-Markovian Noisy Channels [0.09236074230806578]
  We investigate the dynamics of quantum correlations, quantified by the concurrence and the quantum coherence, in a bipartite system of coupled double quantum dots.<n>Results provide valuable insights into the control and protection of quantum correlations in realistic solid-state systems.
  arXiv  Detail & Related papers  (2026-04-18T23:55:39Z)
• Tripartite Entanglement Generation in Atom-Coupled Dual Microresonators System [1.1744028458220428]
  We investigate the emergence and control of genuine tripartite entanglement in a hybrid cavity quantum electrodynamics architecture.<n>We show how dissipative rates and detuning asymmetries govern the conversion of bipartite entanglement into a genuinely tripartite state.<n>These findings outline a clear route to engineering steady state multipartite quantum resources in coupled cavity QED platforms.
  arXiv  Detail & Related papers  (2025-11-20T13:37:04Z)
• Nonclassical Driven-Dissipative Dynamics in Collective Quantum Optics [51.56484100374058]
  We study ensembles of interacting quantum emitters coherently driven by a laser field and coupled to photonic structures.<n>We find that off-resonant virtual states may gain population through dissipation, redefining their role in open systems.<n>Our models address challenges like inhomogeneous broadening and decoherence, demonstrating the feasibility of harnessing cooperative light-matter effects for quantum technologies.
  arXiv  Detail & Related papers  (2025-09-12T20:01:55Z)
• Tunneling of bosonic qubits under local dephasing through microscopic Lindblad approach [0.0]
  Local dephasing noise acts independently on each region, enabling competition between coherent dynamics and decoherence.<n>We show that simultaneous deformation and dephasing can produce rich, nontrivial dynamics, including persistent quantum correlations in long-time steady states.
  arXiv  Detail & Related papers  (2025-09-06T12:37:15Z)
• The transfer of nonlocality between two- and three-qubit dissipative systems with counter-rotating-wave terms [0.13124513975412253]
  In the strong coupling regime, the counter-rotating terms accelerate the decay of genuine three-party correlations.<n>In the ultrastrong coupling regime, we observe a novel phenomenon where nonlocality is consistently transferred between a three-qubit and its subsystem.
  arXiv  Detail & Related papers  (2024-11-21T07:34:48Z)
• Autonomous coherence protection of a two-level system in a fluctuating environment [68.8204255655161]
  We re-examine a scheme originally intended to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits) We demonstrate that this scheme is far more powerful and can also protect a single (or even an ensemble) qubit's energy levels from noise which depends on both time and space.
  arXiv  Detail & Related papers  (2023-02-08T01:44:30Z)
• Nonlocal nonreciprocal optomechanical circulator [2.099922236065961]
  A nonlocal circulator protocol is proposed in hybrid optomechanical system. We establish the quantum channel between two optical modes with long-range.
  arXiv  Detail & Related papers  (2021-12-18T13:50:58Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
  We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
  arXiv  Detail & Related papers  (2020-07-23T13:53:12Z)
• Waveguide quantum optomechanics: parity-time phase transitions in ultrastrong coupling regime [125.99533416395765]
  We show that the simplest set-up of two qubits, harmonically trapped over an optical waveguide, enables the ultrastrong coupling regime of the quantum optomechanical interaction. The combination of the inherent open nature of the system and the strong optomechanical coupling leads to emerging parity-time (PT) symmetry. The $mathcalPT$ phase transition drives long-living subradiant states, observable in the state-of-the-art waveguide QED setups.
  arXiv  Detail & Related papers  (2020-07-04T11:02:20Z)
• Exploring 2D synthetic quantum Hall physics with a quasi-periodically driven qubit [58.720142291102135]
  Quasi-periodically driven quantum systems are predicted to exhibit quantized topological properties. We experimentally study a synthetic quantum Hall effect with a two-tone drive.
  arXiv  Detail & Related papers  (2020-04-07T15:00:41Z)

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.