Home > Research > Publications & Outputs > Heat and Work Along Individual Trajectories of ...

Electronic data

  • 1703.05885

    Rights statement: © 2020 American Physical Society

    Accepted author manuscript, 3.64 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License


Text available via DOI:

View graph of relations

Heat and Work Along Individual Trajectories of a Quantum Bit

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • M. Naghiloo
  • D. Tan
  • P.M. Harrington
  • J.J. Alonso
  • E. Lutz
  • A. Romito
  • K.W. Murch
Article number110604
<mark>Journal publication date</mark>20/03/2020
<mark>Journal</mark>Physical review letters
Issue number11
Number of pages7
Publication StatusPublished
Early online date17/03/20
<mark>Original language</mark>English


We use a near quantum limited detector to experimentally track individual quantum state trajectories of a driven qubit formed by the hybridization of a waveguide cavity and a transmon circuit. For each measured quantum coherent trajectory, we separately identify energy changes of the qubit as heat and work, and verify the first law of thermodynamics for an open quantum system. We further establish the consistency of these results by comparison with the master equation approach and the two-projective-measurement scheme, both for open and closed dynamics, with the help of a quantum feedback loop that compensates for the exchanged heat and effectively isolates the qubit.

Bibliographic note

© 2020 American Physical Society