Micromasers as quantum batteries

ORAL

Abstract

We show that a micromaser is an excellent model of quantum battery. A highly excited, pure, and effectively steady state of the cavity mode, charged by coherent qubits, can be achieved, also in the ultrastrong coupling regime of field-matter interaction. Stability of these appealing features against loss of coherence of the qubits and the effect of counter-rotating terms in the interaction Hamiltonian are also discussed.

*We acknowledge support by the Institute for Basic Science in Korea (IBS-R024-D1), the Julian Schwinger Foundation (Grant JSF-21-04-0001) and by INFN through the project 'QUANTUM'.

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Publication: Quantum Sci. Technol. 7 (2022) 04LT01.

Presenters

  • Varinder Singh

    • Institute for Basic Science (IBS)

Authors

  • Varinder Singh

    • Institute for Basic Science (IBS)

  • Vahid Shaghaghi

    • University of Insubria and Institute of Basic Science

  • Dario Rosa

    • Institute for Basic Science

  • Giuliano Benenti

    • University of Insubria