Entanglement generation and detection in split exciton-polariton condensates

• URL: http://arxiv.org/abs/2305.11491v1
• Date: Fri, 19 May 2023 07:45:30 GMT
• Title: Entanglement generation and detection in split exciton-polariton condensates
• Authors: Jingyan Feng, Hui Li, Zheng Sun, and Tim Byrnes
• Abstract summary: We propose a method of generating and detecting entanglement in two spatially separated exciton Bose-Einstein condensates (BECs) at steady-state. We theoretically model and examine logarithmic negativity criterion and several correlation-based criteria to show that entanglement exists under experimentally achievable parameters.
• Score: 3.473132078798784
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a method of generating and detecting entanglement in two spatially separated excitonpolariton Bose-Einstein condensates (BECs) at steady-state. In our scheme we first create a spinor polariton BEC, such that steady-state squeezing is obtained under a one-axis twisting interaction. Then the condensate is split either physically or virtually, which results in entanglement generated between the two parts. A virtual split means that the condensate is not physically split, but its near-field image is divided into two parts and the spin correlations are deduced from polarization measurements in each half. We theoretically model and examine logarithmic negativity criterion and several correlation-based criteria to show that entanglement exists under experimentally achievable parameters.

Related papers

• Quantum bistability at the interplay between collective and individual decay [0.0]
  We study driven collective radiation of an ensemble of atoms placed inside a cavity. One of these states is entangled and closely resembles a coherently radiating spin state. Remarkably, this suggests that the system may reside in an entangled CRSS-like state even in the presence of decorrelating individual decay.
  arXiv  Detail & Related papers  (2024-04-02T17:44:45Z)
• Unconditional Wigner-negative mechanical entanglement with linear-and-quadratic optomechanical interactions [62.997667081978825]
  We propose two schemes for generating Wigner-negative entangled states unconditionally in mechanical resonators. We show analytically that both schemes stabilize a Wigner-negative entangled state that combines the entanglement of a two-mode squeezed vacuum with a cubic nonlinearity. We then perform extensive numerical simulations to test the robustness of Wigner-negative entanglement attained by approximate CPE states stabilized in the presence of thermal decoherence.
  arXiv  Detail & Related papers  (2023-02-07T19:00:08Z)
• Quantum correlations, entanglement spectrum and coherence of two-particle reduced density matrix in the Extended Hubbard Model [62.997667081978825]
  We study the ground state properties of the one-dimensional extended Hubbard model at half-filling. In particular, in the superconducting region, we obtain that the entanglement spectrum signals a transition between a dominant singlet (SS) to triplet (TS) pairing ordering in the system.
  arXiv  Detail & Related papers  (2021-10-29T21:02:24Z)
• Geometric phase in a dissipative Jaynes-Cummings model: theoretical explanation for resonance robustness [68.8204255655161]
  We compute the geometric phases acquired in both unitary and dissipative Jaynes-Cummings models. In the dissipative model, the non-unitary effects arise from the outflow of photons through the cavity walls. We show the geometric phase is robust, exhibiting a vanishing correction under a non-unitary evolution.
  arXiv  Detail & Related papers  (2021-10-27T15:27:54Z)
• 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)
• Partitioning dysprosium's electronic spin to reveal entanglement in non-classical states [55.41644538483948]
  We report on an experimental study of entanglement in dysprosium's electronic spin. Our findings open up the possibility to engineer novel types of entangled atomic ensembles.
  arXiv  Detail & Related papers  (2021-04-29T15:02:22Z)
• Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles [0.0]
  We show how to detect bipartite entanglement in an unpolarized Dicke state of many spin-1/2 particles. Our methods also work well if split spin-squeezed states are considered.
  arXiv  Detail & Related papers  (2021-04-12T17:33:37Z)
• Faraday imaging induced squeezing of a double-well Bose-Einstein condensate [0.0]
  We examine how non-destructive measurements generate spin squeezing in an atomic Bose-Einstein condensate confined in a double-well trap. The condensate in each well is monitored using coherent light beams in a Mach-Zehnder configuration that interacts with the atoms through a quantum nondemolition Hamiltonian. We find that monitoring the condensate at zero detection current and with identical coherent light beams minimizes the backaction of the measurement on the atoms.
  arXiv  Detail & Related papers  (2021-04-06T09:16:04Z)
• Atomic self-organization emerging from tunable quadrature coupling [5.624813092014403]
  We propose a novel scheme to couple two density-wave degrees of freedom of a BEC to two quadratures of the cavity field. We unravel a dynamically unstable state induced by the cavity dissipation. Our work enriches the quantum simulation toolbox in the cavity-quantum-electrodynamics system.
  arXiv  Detail & Related papers  (2020-04-07T13:25:44Z)
• Relating spin squeezing to multipartite entanglement criteria for particles and modes [0.0]
  Entanglement witnesses based on first and second moments exist in the form of spin-squeezing criteria for the detection of particle entanglement from collective measurements. We show that metrologically useful spin squeezing reveals multimode entanglement in symmetric spin states that are distributed into addressable modes.
  arXiv  Detail & Related papers  (2020-04-03T14:30:11Z)
• Switching dynamics of single and coupled VO2-based oscillators as elements of neural networks [55.41644538483948]
  We report on the switching dynamics of both single and coupled VO2-based oscillators, with resistive and capacitive coupling, and explore the capability of their application in neural networks. For the resistive coupling, it is shown that synchronization takes place at a certain value of the coupling resistance, though it is unstable and a synchronization failure occurs periodically. For the capacitive coupling, two synchronization modes, with weak and strong coupling, are found. The transition between these modes is accompanied by chaotic oscillations.
  arXiv  Detail & Related papers  (2020-01-07T02:16:04Z)

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.