Strong coupling and active cooling in a finite temperature hybrid atom-cavity system

Keary, L. F. and Pritchard, J. D. (2022) Strong coupling and active cooling in a finite temperature hybrid atom-cavity system. Physical Review A, 105 (1). 013707. ISSN 2469-9926 (https://doi.org/10.1103/PhysRevA.105.013707)

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Abstract

For a standard two-level atom coupled to the quantized field of a resonant cavity, finite-temperature effects lead to thermal occupation of the cavity modes that obfuscates measurement of the quantum nature of the atom-light interaction. In this paper we demonstrate that using a hybrid system of a superconducting cavity coupled to a multilevel Rydberg atom, it is possible to observe the quantum nature of strong coupling even at finite temperatures and to exploit this coupling to permit cooling of the thermal microwave mode towards the ground state, enabling observation of coherent vacuum Rabi oscillations even at 4 K for realistic experimental parameters. Cooling for multiple atoms is also explored, showing maximal cooling for small samples, making this a viable approach to cavity cooling with potential applications in long-range coupling of superconducting qubits via thermal waveguides.

ORCID iDs

Keary, L. F. and Pritchard, J. D. ORCID logoORCID: https://orcid.org/0000-0003-2172-7340;
  • Item type:Article
    ID code:79079
    Dates:
    Date
    Event
    12 January 2022
    Published
    15 December 2021
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:10 Jan 2022 16:04
    Last modified:11 Nov 2024 13:10
    URI:https://strathprints.strath.ac.uk/id/eprint/79079
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