2023/08/10 by R. S. Watson, Watson, R. S., K. V. Kheruntsyan +1 · 5 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Atom (system on chip) #Bose gas #Boson #Coherence (philosophical gambling strategy) #Cold Atom Physics and Bose-Einstein Condensates #Open quantum system #Physics #Quantum #Quantum dynamics #Quantum entanglement #Quantum information #Quantum mechanics #Quantum simulator #Quantum statistical mechanics #Quantum technology #Quantum thermodynamics #Quantum, superfluid, helium dynamics #Ultracold atom
paper · pdf · doi:10.48550/arxiv.2308.05266
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2023/08/10 · openalex created_date 2023/08/12 · openalex updated_date 2026/07/28
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.