Casimir spring and dilution in macroscopic cavity optomechanics

• URL: http://arxiv.org/abs/2004.05983v1
• Date: Mon, 6 Apr 2020 23:20:34 GMT
• Title: Casimir spring and dilution in macroscopic cavity optomechanics
• Authors: Jacob M. Pate, Maxim Goryachev, Raymond Y. Chiao, Jay E. Sharping, Michael Edmund Tobar
• Abstract summary: The Casimir force was predicted in 1948 as a force arising between macroscopic bodies from the zero-point energy. This work invents a new way to manipulate phonons via thermal photons leading to in situ'' reconfigurable mechanical states.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Casimir force was predicted in 1948 as a force arising between macroscopic bodies from the zero-point energy. At finite temperatures it has been shown that a thermal Casimir force exists due to thermal rather than zero-point energy and there are a growing number of experiments that characterise the effect at a range of temperatures and distances. Additionally, in the rapidly evolving field of cavity optomechanics there is an endeavor to manipulate phonons and enhance coherence. We demonstrate a new way to achieve this through the first observation of Casimir spring and dilution in macroscopic optomechanics, by coupling a metallic SiN membrane to a photonic re-entrant cavity. The attraction of the spatially-localised Casimir spring mimics a non-contacting boundary condition giving rise to increased strain and acoustic coherence through dissipation dilution. This work invents a new way to manipulate phonons via thermal photons leading to ``in situ'' reconfigurable mechanical states, to reduce loss mechanisms and to create new types of acoustic non-linearity -- all at room temperature.

Related papers

• Near-field dynamical Casimir effect [0.2302001830524133]
  We propose the dynamical Casimir effect in a time-modulated near-field system. We have identified flux contributions from both quantum and thermal fluctuations at finite temperatures. Our findings open an avenue for the exploration of dynamical Casimir effect beyond cryogenic temperatures.
  arXiv  Detail & Related papers  (2024-10-28T18:14:10Z)
• Motional sideband asymmetry of a solid-state mechanical resonator at room temperature [0.0]
  We sideband-cool a membrane-in-the-middle system close to the quantum ground state from room temperature. We observe motional sideband asymmetry in a dual-homodyne measurement.
  arXiv  Detail & Related papers  (2024-08-12T21:23:38Z)
• Casimir repulsion with biased semiconductors [1.8273673942018027]
  We explore systems involving moderately biased semiconductors that exhibit strong repulsive Casimir forces. Modes emitted from the semiconductors exert a repulsive force on a near surface that overcomes the attractive equilibrium Casimir force contribution at submicron distances. Our work opens up new possibilities of controlling forces at the nano- and micrometer scale with applications in sensing and actuation in nanotechnology.
  arXiv  Detail & Related papers  (2024-03-14T00:04:13Z)
• Limits for coherent optical control of quantum emitters in layered materials [49.596352607801784]
  coherent control of a two-level system is among the most essential challenges in modern quantum optics. We use a mechanically isolated quantum emitter in hexagonal boron nitride to explore the individual mechanisms which affect the coherence of an optical transition under resonant drive. New insights on the underlying physical decoherence mechanisms reveals a limit in temperature until which coherent driving of the system is possible.
  arXiv  Detail & Related papers  (2023-12-18T10:37:06Z)
• Phonon-photon conversion as mechanism for cooling and coherence transfer [41.94295877935867]
  The energy of a movable wall of a cavity confining a quantum field can be converted into quanta of the field itself. We employ quantum thermodynamics to show that this phenomenon can be employed as a tool to cool down the wall. We show how to employ one laser drive to cool the entire system including the case when it is composed of other subsystems.
  arXiv  Detail & Related papers  (2023-12-15T14:42:16Z)
• Giant anisotropy and Casimir phenomena: the case of carbon nanotube metasurfaces [0.0]
  The Casimir interaction and torque are related phenomena originating from the exchange of electromagnetic excitations between objects. It is found that the Casimir interaction is dominated by thermal fluctuations at sub-micron separations, while the torque is primarily determined by quantum mechanical effects. Our study suggests that nanostructured anisotropic materials can serve as novel platforms to uncover new functionalities in ubiquitous Casimir phenomena.
  arXiv  Detail & Related papers  (2023-11-08T20:07:21Z)
• Efficient Reduction of Casimir Forces by Self-assembled Bio-molecular Thin Films [62.997667081978825]
  Casimir forces, related to London-van der Waals forces, arise if the spectrum of electromagnetic fluctuations is restricted by boundaries. We experimentally investigate the influence of self-assembled molecular bio and organic thin films on the Casimir force between a plate and a sphere. We find that molecular thin films, despite being a mere few nanometers thick, reduce the Casimir force by up to 14%.
  arXiv  Detail & Related papers  (2023-06-28T13:44:07Z)
• Quantum field heat engine powered by phonon-photon interactions [58.720142291102135]
  We present a quantum heat engine based on a cavity with two oscillating mirrors. The engine performs an Otto cycle during which the walls and a field mode interact via a nonlinear Hamiltonian.
  arXiv  Detail & Related papers  (2023-05-10T20:27:15Z)
• Phononically shielded photonic-crystal mirror membranes for cavity quantum optomechanics [48.7576911714538]
  We present a highly reflective, sub-wavelength-thick membrane resonator featuring high mechanical quality factor. We construct a Fabry-Perot-type optical cavity, with the membrane forming one terminating mirror. We demonstrate optomechanical sideband cooling to mK-mode temperatures, starting from room temperature.
  arXiv  Detail & Related papers  (2022-12-23T04:53:04Z)
• Demonstrating Quantum Microscopic Reversibility Using Coherent States of Light [58.8645797643406]
  We propose and experimentally test a quantum generalization of the microscopic reversibility when a quantum system interacts with a heat bath. We verify that the quantum modification for the principle of microscopic reversibility is critical in the low-temperature limit.
  arXiv  Detail & Related papers  (2022-05-26T00:25:29Z)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)

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.