Impact of the Central Frequency of Environment on Non-Markovian Dynamics in Piezoelectric Optomechanical Devices

• URL: http://arxiv.org/abs/2011.06626v1
• Date: Thu, 12 Nov 2020 19:16:57 GMT
• Title: Impact of the Central Frequency of Environment on Non-Markovian Dynamics in Piezoelectric Optomechanical Devices
• Authors: Quanzhen Ding, Peng Zhao, Yonghong Ma, and Yusui Chen
• Abstract summary: This paper introduces a semi-classical and full-quantum model of piezoelectric optomechanical systems coupled to a noisy bosonic quantum environment. We show that the noisy environment, particularly the central frequency of the environment, can enhance the entanglement generation between optical cavities and LC circuits. Our work can be applied in the fields of electric/ optical switches, and long-distance distribution in a large-scale quantum network.
• Score: 5.96533464837997
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The piezoelectric optomechanical devices supply a promising experimental platform to realize the coherent and effective control and measurement of optical circuits working in Terahertz (THz) frequencies via superconducting electron devices typically working in Radio (MHz) frequencies. However, quantum fluctuations are unavoidable when the size of mechanical oscillators enters into the nanoscale. The consequences of the noisy environment are still challenging due to the lack of analytical tools. In this paper, a semi-classical and full-quantum model of piezoelectric optomechanical systems coupled to a noisy bosonic quantum environment are introduced and solved in terms of quantum-state diffusion (QSD) trajectories in the non-Markovian regime. We show that the noisy environment, particularly the central frequency of the environment, can enhance the entanglement generation between optical cavities and LC circuits in some parameter regimes. Moreover, we observe the critical points in the coefficient functions, which can lead the different behaviors in the system. Besides, we also witness the entanglement transfers between macroscopic objects due to the memory effect of the environment. Our work can be applied in the fields of electric/ optical switches, and long-distance distribution in a large-scale quantum network.

Related papers

• 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)
• Studying phonon coherence with a quantum sensor [0.0]
  We use a superconducting qubit as a quantum sensor to perform phonon number-resolved measurements on a phononic crystal cavity. We observe nonexponential energy decay and a state size-dependent reduction of the dephasing rate. Our findings comprise a detailed examination of TLS-induced phonon decoherence in the quantum regime.
  arXiv  Detail & Related papers  (2023-02-01T03:52:01Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Slowing down light in a qubit metamaterial [98.00295925462214]
  superconducting circuits in the microwave domain still lack such devices. We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide. Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
  arXiv  Detail & Related papers  (2022-02-14T20:55:10Z)
• Frequency fluctuations of ferromagnetic resonances at milliKelvin temperatures [50.591267188664666]
  Noise is detrimental to device performance, especially for quantum coherent circuits. Recent efforts have demonstrated routes to utilizing magnon systems for quantum technologies, which are based on single magnons to superconducting qubits. Researching the temporal behavior can help to identify the underlying noise sources.
  arXiv  Detail & Related papers  (2021-07-14T08:00:37Z)
• Phonon-number resolution of voltage-biased mechanical oscillators with weakly-anharmonic superconducting circuits [0.0]
  We study the electrostatic coupling of motion to a weakly anharmonic circuit, namely the transmon qubit. To remedy this issue, we explore the requirements to reach phonon-number resolution.
  arXiv  Detail & Related papers  (2021-03-08T15:32:20Z)
• Measurements of a quantum bulk acoustic resonator using a superconducting qubit [0.0]
  Phonons hold promise for quantum-focused applications as diverse as sensing, information processing, and communication. We describe a piezoelectric quantum bulk acoustic resonator (QBAR) with a 4.88 GHz resonant frequency. We couple this QBAR resonator to a superconducting qubit on a separate die and demonstrate quantum control of the mechanics in the coupled system.
  arXiv  Detail & Related papers  (2020-12-08T17:36:33Z)
• QuTiP-BoFiN: A bosonic and fermionic numerical hierarchical-equations-of-motion library with applications in light-harvesting, quantum control, and single-molecule electronics [51.15339237964982]
  "hierarchical equations of motion" (HEOM) is a powerful exact numerical approach to solve the dynamics. It has been extended and applied to problems in solid-state physics, optics, single-molecule electronics, and biological physics. We present a numerical library in Python, integrated with the powerful QuTiP platform, which implements the HEOM for both bosonic and fermionic environments.
  arXiv  Detail & Related papers  (2020-10-21T07:54:56Z)
• Observation of phonon trapping in the continuum with topological charges [0.0]
  We present a new paradigm of phonon trapping using mechanical bound states in the continuum (BICs) with topological features. BICs might lead to unprecedented sensing modalities for applications such as rare-event searches and the exploration of the foundations of quantum mechanics in unreached parameter spaces.
  arXiv  Detail & Related papers  (2020-07-05T23:39:39Z)
• 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)
• Dynamical tunnelling of a Nano-mechanical Oscillator [0.0]
  We show that tunnelling rates sensitively depend on the ability of the quantum system to resolve the underlying classical phase space. We show that the effective Planck's constant, which determines this phase space resolution, can be varied over orders of magnitude. We demonstrate that a mixed regular and chaotic phase space can be engineered in one spatial dimension.
  arXiv  Detail & Related papers  (2020-06-25T15:21:58Z)

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.