Preparation and Verification of Two-Mode Mechanical Entanglement Through Pulsed Optomechanical Measurements

• URL: http://arxiv.org/abs/2011.10289v2
• Date: Tue, 12 Jan 2021 09:33:16 GMT
• Title: Preparation and Verification of Two-Mode Mechanical Entanglement Through Pulsed Optomechanical Measurements
• Authors: Pascal Neveu, Jack Clarke, Michael R. Vanner, Ewold Verhagen
• Abstract summary: We propose a protocol how to generate and verify bipartite Gaussian entanglement between two mechanical modes coupled to a single optical cavity. Our protocol requires neither the resolved sideband regime, nor low thermal phonon occupancy, and allows the generation and verification of quantum entanglement in less than a mechanical period of motion.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a protocol how to generate and verify bipartite Gaussian entanglement between two mechanical modes coupled to a single optical cavity, by means of short optical pulses and measurement. Our protocol requires neither the resolved sideband regime, nor low thermal phonon occupancy, and allows the generation and verification of quantum entanglement in less than a mechanical period of motion. Entanglement is generated via effective two-mode mechanical squeezing through conditioning position measurements. We study the robustness of entanglement to experimental deviations in mechanical frequencies and optomechanical coupling rates.

Related papers

• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• Broadband Multidimensional Variational Measurement with Non-Symmetric Coupling [41.94295877935867]
  We analyze a general case of the non-symmetric measurement scheme, in which the coupling strengths with the light modes are not equal to each other. We found that the back action can be completely excluded from the measurement result in the case of the asymmetric system.
  arXiv  Detail & Related papers  (2024-07-30T11:12:13Z)
• Strong coupling at room temperature with a centimeter-scale quartz crystal [0.0]
  We report an optomechanical system with independent control over pumping power and frequency detuning to achieve and characterize the strong-coupling regime of a bulk acoustic-wave resonator. Our results provide valuable insights into the performances of room-temperature macroscopic mechanical systems and their applications in hybrid quantum devices.
  arXiv  Detail & Related papers  (2024-05-28T12:15:05Z)
• Squeezing for Broadband Multidimensional Variational Measurement [55.2480439325792]
  We show that optical losses inside cavity restrict back action exclusion due to loss noise. We analyze how two-photon (nondegenerate) and conventional (degenerate) squeezing improve sensitivity with account optical losses.
  arXiv  Detail & Related papers  (2023-10-06T18:41:29Z)
• Enhanced optomechanical interaction in the unbalanced interferometer [40.96261204117952]
  Quantum optomechanical systems enable the study of fundamental questions on quantum nature of massive objects. Here we propose a modification of the Michelson-Sagnac interferometer, which allows to boost the optomechanical coupling strength.
  arXiv  Detail & Related papers  (2023-05-11T14:24:34Z)
• 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)
• Strong mechanical squeezing in a microcavity with double quantum wells [0.0]
  In a hybrid quantum system composed of two quantum wells placed inside a cavity with a moving end mirror pumped by bichromatic coherent light, we address the formation of squeezed states of a mechanical resonator. We show that the robustness of this squeezing against thermal fluctuations is important for practical applications of such systems.
  arXiv  Detail & Related papers  (2023-02-01T16:00:55Z)
• Two-mode Schr\"odinger-cat states with nonlinear optomechanics: generation and verification of non-Gaussian mechanical entanglement [0.0]
  We introduce a pulsed approach that utilizes the nonlinearity of the radiation-pressure interaction combined with photon-counting measurements. We describe a protocol using subsequent pulsed interactions to verify the non-Gaussian entanglement generated. Our scheme offers significant potential for further research and development that utilizes such non-Gaussian states for quantum-information and sensing applications.
  arXiv  Detail & Related papers  (2021-09-17T12:58:52Z)
• Quantum Simulation of Tunable and Ultrastrong Mixed-Optomechanics [0.0]
  We show that the mixed-optomechanical interactions can enter the single-photon strong-coupling and even ultrastrong-coupling regimes. The thermal noise of the driven mode can be totally suppressed by introducing a proper squeezed vacuum bath. This work will pave the way to the observation and application of ultrastrong optomechanical effects in quantum simulators.
  arXiv  Detail & Related papers  (2021-01-25T08:01:06Z)
• 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)
• Stroboscopic quantum optomechanics [0.0]
  We show that ground-state cooling and mechanical squeezing can be achieved, even in the presence of mechanical dissipation. We provide a full quantum-mechanical treatment of stroboscopic backaction-evading measurements.
  arXiv  Detail & Related papers  (2020-03-09T19:00:58Z)

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.