Quantum many-body thermal machines enabled by atom-atom correlations

• URL: http://arxiv.org/abs/2308.05266v3
• Date: Thu, 11 Jul 2024 05:49:01 GMT
• Title: Quantum many-body thermal machines enabled by atom-atom correlations
• Authors: R. S. Watson, K. V. Kheruntsyan,
• Abstract summary: We study a class of quantum many-body thermal machines whose operation is directly enabled by second-order atom-atom correlations in an ultracold atomic gas. We show that operating these thermal machines in the intended regimes, such as a heat engine, refrigerator, thermal accelerator, or heater, would be impossible without such atom-atom correlations.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Particle-particle correlations, characterized by Glauber's second-order correlation function,play an important role in the understanding of various phenomena in radio and optical astronomy, quantum and atom optics, particle physics, condensed matter physics, and quantum many-body theory. However, the relevance of such correlations to quantum thermodynamics has so far remained illusive. Here, we propose and investigate a class of quantum many-body thermal machines whose operation is directly enabled by second-order atom-atom correlations in an ultracold atomic gas. More specifically, we study quantum thermal machines that operate in a sudden interaction-quench Otto cycle and utilize a one-dimensional Lieb-Liniger gas of repulsively interacting bosons as the working fluid. The atom-atom correlations in such a gas are different to those of a classical ideal gas, and are a result of the interplay between interparticle interactions, quantum statistics, and thermal fluctuations. We show that operating these thermal machines in the intended regimes, such as a heat engine, refrigerator, thermal accelerator, or heater, would be impossible without such atom-atom correlations. Our results constitute a step forward in the design of conceptually new quantum thermodynamic devices which take advantage of uniquely quantum resources such as quantum coherence, correlations, and entanglement.

Related papers

• Long-lived entanglement of molecules in magic-wavelength optical tweezers [41.94295877935867]
  We present the first realisation of a microwave-driven entangling gate between two molecules. We show that the magic-wavelength trap preserves the entanglement, with no measurable decay over 0.5 s. The extension of precise quantum control to complex molecular systems will allow their additional degrees of freedom to be exploited across many domains of quantum science.
  arXiv  Detail & Related papers  (2024-08-27T09:28:56Z)
• Efficiency and thermodynamic uncertainty relations of a dynamical quantum heat engine [0.0]
  We show that parameters can be found such that the machine operates both as a quantum engine or refrigerator. We show that parameters can be found such that the machine operates both as a quantum engine or refrigerator, with both sizeable efficiency and small fluctuations.
  arXiv  Detail & Related papers  (2023-03-28T07:30:34Z)
• Quantum Engines and Refrigerators [0.0]
  Engines are systems and devices that convert one form of energy into another, typically into a more useful form that can perform work. In the quantum regime, however, the principles of energy conversion become ambiguous, since quantum phenomena come into play. Our work provides a broad overview of this active field of quantum engines and refrigerators, reviewing the latest theoretical proposals and experimental realizations.
  arXiv  Detail & Related papers  (2023-02-01T19:46:01Z)
• A Quantum-Classical Model of Brain Dynamics [62.997667081978825]
  Mixed Weyl symbol is used to describe brain processes at the microscopic level. Electromagnetic fields and phonon modes involved in the processes are treated either classically or semi-classically. Zero-point quantum effects can be incorporated into numerical simulations by controlling the temperature of each field mode.
  arXiv  Detail & Related papers  (2023-01-17T15:16:21Z)
• Switching the function of the quantum Otto cycle in non-Markovian dynamics: heat engine, heater and heat pump [0.0]
  We show that the interaction energy between a macroscopic heat bath and a microscopic qubit is not negligible. A non-Markovian quantum Otto cycle can switch functions such as an engine as well as a heater or a heat pump by controlling the interaction time with the heat bath. This property has a possibility of being utilized for cooling the qubits in quantum computing.
  arXiv  Detail & Related papers  (2022-11-17T04:53:15Z)
• Quantum Advantage of Thermal Machines with Bose and Fermi Gases [3.8711321377362427]
  We show that a quantum gas, a collection of massive, non-interacting, indistinguishable quantum particles, can be realized as a thermodynamic machine. Such a thermodynamic machine depends on the statistics of the particles, the chemical potential, and the spatial dimension of the system.
  arXiv  Detail & Related papers  (2022-06-08T12:53:43Z)
• 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)
• Implementation of a two-stroke quantum heat engine with a collisional model [50.591267188664666]
  We put forth a quantum simulation of a stroboscopic two-stroke thermal engine in the IBMQ processor. The system consists of a quantum spin chain connected to two baths at their boundaries, prepared at different temperatures using the variational quantum thermalizer algorithm.
  arXiv  Detail & Related papers  (2022-03-25T16:55:08Z)
• Thermal entanglement and quantum coherence of a single electron in a double quantum dot with Rashba Interaction [0.0]
  We study the thermal quantum coherence in a semiconductor double quantum dot. The main goal of this work is to provide a good understanding of the effects of temperature and several parameters in quantum coherence.
  arXiv  Detail & Related papers  (2022-03-12T01:14:26Z)
• Taking the temperature of a pure quantum state [55.41644538483948]
  Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. We propose a scheme to measure the temperature of such pure states through quantum interference.
  arXiv  Detail & Related papers  (2021-03-30T18:18:37Z)
• 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)

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.