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Article Dans Une Revue Physical Review Research Année : 2024

Quantum energetics of a noncommuting measurement

Xiayu Linpeng
  • Fonction : Auteur
Nicolò Piccione
Maria Maffei
  • Fonction : Auteur
Léa Bresque
Samyak Prasad
  • Fonction : Auteur
Andrew Jordan
Alexia Auffèves
  • Fonction : Auteur
Kater Murch

Résumé

When a measurement observable does not commute with a quantum system's Hamiltonian, the energy of the measured system is typically not conserved during the measurement. Instead, energy can be transferred between the measured system and the meter. In this work, we experimentally investigate the energetics of noncommuting measurements in a circuit quantum electrodynamics system containing a transmon qubit embedded in a 3D microwave cavity. We show through spectral analysis of the cavity photons that a frequency shift is imparted on the probe, in balance with the associated energy changes of the qubit. Our experiment provides new insights into foundations of quantum measurement, as well as a better understanding of the key mechanisms at play in quantum energetics. Published by the American Physical Society 2024

Dates et versions

hal-04645709 , version 1 (12-07-2024)

Identifiants

Citer

Xiayu Linpeng, Nicolò Piccione, Maria Maffei, Léa Bresque, Samyak Prasad, et al.. Quantum energetics of a noncommuting measurement. Physical Review Research, 2024, 6 (3), pp.033045. ⟨10.1103/PhysRevResearch.6.033045⟩. ⟨hal-04645709⟩
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