Long-time Bell states of waveguide-mediated qubits via continuous measurement

• URL: http://arxiv.org/abs/2110.05309v2
• Date: Mon, 18 Oct 2021 01:50:37 GMT
• Title: Long-time Bell states of waveguide-mediated qubits via continuous measurement
• Authors: Huiping Zhan and Huatang Tan
• Abstract summary: We consider a new scheme for achieving long-time sustainable Bell states of two distant qubits mediated by a one-dimension waveguide. We find that a cyclic jump among Bell states can be formed once the first photon is registered.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: The generation of Bell states of distant objects is of importance for constructing quantum networks. Previous studies have revealed that transient or intermittent Bell states can be generated between remote qubits by exploiting time-continuous measurement on the environments of the systems, e.g., photon counting or homodyne detection. In this paper, we consider a new scheme for achieving long-time sustainable Bell states of two distant qubits mediated by a one-dimension waveguide via continuous photon counting and homodyne detection. In both of cases, different Bell states can be present for different initial states in the long-time regime. Specially, in the former case, we find that a cyclic jump among Bell states can be formed once the first photon is registered, and more interestingly in the latter case, any steady Bell state can be achieved independent of detection efficiency.

Related papers

• Generating magnon Bell states via parity measurement [0.0]
  We propose a scheme to entangle two magnon modes based on parity measurement. In particular, we consider a system that two yttrium-iron-garnet spheres are coupled to a $V$-type superconducting qutrit.
  arXiv  Detail & Related papers  (2024-01-22T04:36:39Z)
• Ultrafast and deterministic generation of Bell states in the ultrastrong coupling regime [9.60272390263707]
  We find the special dark state solutions of the anisotropic two-qubit quantum Rabi model (QRM) We propose a scheme to deterministically generate two kinds of the two-qubit Bell states through adiabatic evolution along the dark states.
  arXiv  Detail & Related papers  (2023-08-08T11:05:22Z)
• Complete frequency-bin Bell basis synthesizer [0.0]
  We report the generation of all four frequency-bin Bell states in a single versatile setup. We reconstruct the matrices of the generated Bell states.
  arXiv  Detail & Related papers  (2022-05-12T15:05:47Z)
• Recycling qubits for the generation of Bell nonlocality between independent sequential observers [0.4024850952459758]
  We study the sequential generation of Bell nonlocality via recycling one or both components of two-qubit states. Our results are based on a formalism that is applicable to more general problems in recycling entanglement.
  arXiv  Detail & Related papers  (2021-09-08T07:45:54Z)
• Single-photon nonlocality in quantum networks [55.41644538483948]
  We show that the nonlocality of single-photon entangled states can nevertheless be revealed in a quantum network made only of beamsplitters and photodetectors. Our results show that single-photon entanglement may constitute a promising solution to generate genuine network-nonlocal correlations useful for Bell-based quantum information protocols.
  arXiv  Detail & Related papers  (2021-08-03T20:13:24Z)
• Telecom-heralded entanglement between remote multimode solid-state quantum memories [55.41644538483948]
  Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation. Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories. We also show that the generated entanglement is robust against loss in the heralding path, and demonstrate temporally multiplexed operation, with 62 temporal modes.
  arXiv  Detail & Related papers  (2021-01-13T14:31:54Z)
• Bose-Einstein condensate soliton qubit states for metrological applications [58.720142291102135]
  We propose novel quantum metrology applications with two soliton qubit states. Phase space analysis, in terms of population imbalance - phase difference variables, is also performed to demonstrate macroscopic quantum self-trapping regimes.
  arXiv  Detail & Related papers  (2020-11-26T09:05:06Z)
• Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
  We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide. Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
  arXiv  Detail & Related papers  (2020-11-24T07:06:36Z)
• Observing coherences with time-resolved photoemission [77.34726150561087]
  We discuss the potential creation and measurement of coherences in both dispersive solids and qubit-like single levels using current generation time- and angle-resolved photoemission technology. We show that in both cases, when both the pump and the probe overlap energetically with the coherent levels, that the time-resolved photoemission signal shows a beating pattern at the energy difference between the levels. In the case of dispersive bands, this leads to momentum-dependent oscillations, which may be used to map out small energy scales in the band structure.
  arXiv  Detail & Related papers  (2020-05-18T18:00:02Z)
• Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
  We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit. We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront. The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
  arXiv  Detail & Related papers  (2020-03-09T21:27:02Z)
• Multiplexed photon number measurement [0.0]
  We propose a method where a single qubit is able to extract many bits of information about a microwave resonator using continuous measurement. We realize a proof-of-principle experiment by recording the fluorescence emitted by a superconducting qubit. Our experiment unleashes the full potential of quantum meters by replacing a sequential quantum measurements with simultaneous and continuous measurements separated in the frequency domain.
  arXiv  Detail & Related papers  (2020-01-09T20:49:15Z)

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.