Heat and Work Along Individual Trajectories of a Quantum Bit

Naghiloo M, Tan D, Harrington PM, Alonso Castaneda JJ, Lutz E, Romito A, Murch KW (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Letters American Physical Society

Book Volume: 124

Journal Issue: 11

DOI: 10.1103/PhysRevLett.124.110604

Abstract

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.

Authors with CRIS profile

Jose Joaquin Alonso Castaneda Lehrstuhl für Theoretische Physik

Involved external institutions

Universität Stuttgart DE Germany (DE) Washington University US United States (USA) (US) Lancaster University GB United Kingdom (GB)

How to cite

APA:

Naghiloo, M., Tan, D., Harrington, P.M., Alonso Castaneda, J.J., Lutz, E., Romito, A., & Murch, K.W. (2020). Heat and Work Along Individual Trajectories of a Quantum Bit. Physical Review Letters, 124(11). https://dx.doi.org/10.1103/PhysRevLett.124.110604

MLA:

Naghiloo, M., et al. "Heat and Work Along Individual Trajectories of a Quantum Bit." Physical Review Letters 124.11 (2020).

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