Synchronization of a superconducting qubit to an optical field mediated by a mechanical resonator

Roson Nongthombam, Sampreet Kalita, and Amarendra K. Sarma
Phys. Rev. A 107, 013528 – Published 30 January 2023

Abstract

We study the synchronization of a superconducting qubit to an external optical field via a mechanical resonator in a hybrid electrooptomechanical system. The quantum trajectory method is employed to investigate synchronization. The bistability in one of the qubit polarization vectors, where the qubit rotates about the polarization vector, is observed for a single quantum trajectory run. The rotation in one of the stable states is synced with the external optical drive. When the number of trajectories is significantly increased, the qubit no longer displays bistability. However, synchronization with less quantum fluctuations is still observed. The scheme could be used to prepare and monitor the state of the microwave qubit to a long-lived optical photon through synchronization, which may find applications in long-distance quantum communication. Also, this hybrid system can be used to study quantum synchronization.

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  • Received 24 May 2022
  • Revised 30 September 2022
  • Accepted 12 January 2023

DOI:https://doi.org/10.1103/PhysRevA.107.013528

©2023 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

Roson Nongthombam*, Sampreet Kalita, and Amarendra K. Sarma

  • Department of Physics, Indian Institute of Technology Guwahati, Guwahati-781039, India

  • *n.roson@iitg.ac.in
  • sampreet@iitg.ac.in
  • aksarma@iitg.ac.in

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Issue

Vol. 107, Iss. 1 — January 2023

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