Tuning quantum-classical correspondence of molecular systems in a cavity

• URL: http://arxiv.org/abs/2202.06696v2
• Date: Wed, 23 Feb 2022 11:43:07 GMT
• Title: Tuning quantum-classical correspondence of molecular systems in a cavity
• Authors: Nimrod Moiseyev and Milan Sindelka
• Abstract summary: We show that the correspondence between quantum and classical mechanics can be tuned by varying the coupling strength between the cavity modes and an atom or a molecule. This approach might lead in particular to the possibility of studying the correspondence of "quantum-chaos" (quantumity) with classical chaos.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We show that the correspondence between quantum and classical mechanics can be tuned by varying the coupling strength between the cavity modes and an atom or a molecule. In the acceleration gauge the cavity-matter system is represented by an effective Hamiltonian with a non-trivial coupling appearing in the potential, and a renormaized mass. Importantly, the acceleration-gauge coupling is non-monotonic with the strength cavity-matter interaction. As a result one obtain effective approximately decoupled field-matter dynamics for weak and strong interactions. In the weak coupling regime the effective mass is essentially the original mass. In contrast, the renormalized mass is increased as the interaction is increased. This results in acceleration gauge dynamics of atom/molecule with the original Hamiltonian and effective Planck's constant that is reduced when the interaction is increased. This approach might lead in particular to the possibility of studying the correspondence of "quantum-chaos" (quantum stochasticity) with classical chaos, as well as either enhancement or suppression of tunneling, by varying a controllable physical parameter. Physical realization of our findings is briefly discussed.

Related papers

• Oscillatory dissipative tunneling in an asymmetric double-well potential [32.65699367892846]
  Chemical research will benefit from a fully adjustable, asymmetric double-well equipped with precise measurement capabilities of the tunneling rates. We show a quantum simulator system that consists of a continuously driven Kerr parametric oscillator with a third order non-linearity that can be operated in the quantum regime to create a fully asymmetric double-well. Our work is a first step for the development of analog molecule simulators of proton transfer reactions based on quantum superconducting circuits.
  arXiv  Detail & Related papers  (2024-09-19T22:43:07Z)
• Entangled Matter-waves for Quantum Enhanced Sensing [0.0]
  We present a method for creating and controlling entanglement between solely the motional states of atoms in a cavity without the need for electronic interactions. This system offers a highly tunable, many-body quantum sensor and simulator.
  arXiv  Detail & Related papers  (2024-06-19T15:10:27Z)
• The quantum Hall effect under the influence of gravity and inertia: A unified approach [44.99833362998488]
  We examine how both the integer and the fractional quantum Hall effects behave under a combined influence of gravity and inertia. The general Hamiltonian for describing the combined effect of gravity, rotation and inertia on the electrons of a Hall sample is then built and the eigenstates are obtained.
  arXiv  Detail & Related papers  (2024-03-11T18:01:55Z)
• Cavity-Induced Quantum Interference and Collective Interactions in van der Waals Systems [0.0]
  We show that light-matter hybridization can modify intermolecular interactions and induce new structural order. Using the van der Waals (vdW) system in an optical cavity as an example, we predict the effects of interference and collectivity in cavity-induced many-body dispersion interactions.
  arXiv  Detail & Related papers  (2023-10-19T16:35:57Z)
• Quantum field theory for multipolar composite bosons with mass defect and relativistic corrections [0.10686401485328585]
  We present a subspace effective field theory for interacting, spin carrying, and possibly charged ensembles of atoms composed of nucleus and electron. We obtain a relativistic coupling between the coboson's center-of-mass motion and internal structure encoded by the mass defect.
  arXiv  Detail & Related papers  (2023-07-12T12:35:27Z)
• 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)
• Aharonov-Bohm effect for confined matter in lattice gauge theories [0.0]
  We study the dynamics of mesons residing in a ring-shaped lattice of mesoscopic size pierced by an effective magnetic field. We find a new type of Aharonov-Bohm effect that goes beyond the particle-like effect and reflects the the features of the confining gauge potential.
  arXiv  Detail & Related papers  (2023-04-25T10:51:42Z)
• Quantum vibrational mode in a cavity confining a massless spinor field [91.3755431537592]
  We analyse the reaction of a massless (1+1)-dimensional spinor field to the harmonic motion of one cavity wall. We demonstrate that the system is able to convert bosons into fermion pairs at the lowest perturbative order.
  arXiv  Detail & Related papers  (2022-09-12T08:21:12Z)
• 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)
• Strong Coupling Optomechanics Mediated by a Qubit in the Dispersive Regime [0.0]
  dispersive, radiation-pressure interaction between the mechanical and the electromagnetic modes is typically very weak. We show that if the interaction is mediated by a Josephson circuit, one can have an effective dynamic corresponding to a huge enhancement of the single-photon optomechanical coupling.
  arXiv  Detail & Related papers  (2021-07-29T20:24:20Z)
• Evolution of a Non-Hermitian Quantum Single-Molecule Junction at Constant Temperature [62.997667081978825]
  We present a theory for describing non-Hermitian quantum systems embedded in constant-temperature environments. We find that the combined action of probability losses and thermal fluctuations assists quantum transport through the molecular junction.
  arXiv  Detail & Related papers  (2021-01-21T14:33:34Z)
• Quantum decoherence by Coulomb interaction [58.720142291102135]
  We present an experimental study of the Coulomb-induced decoherence of free electrons in a superposition state in a biprism electron interferometer close to a semiconducting and metallic surface. The results will enable the determination and minimization of specific decoherence channels in the design of novel quantum instruments.
  arXiv  Detail & Related papers  (2020-01-17T04:11:44Z)

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.