Quantum energetics of a non-commuting measurement
- URL: http://arxiv.org/abs/2311.13634v2
- Date: Mon, 27 Nov 2023 17:35:29 GMT
- Title: Quantum energetics of a non-commuting measurement
- Authors: Xiayu Linpeng, Nicol\`o Piccione, Maria Maffei, L\'ea Bresque, Samyak
P. Prasad, Andrew N. Jordan, Alexia Auff\`eves, and Kater W. Murch
- Abstract summary: We experimentally investigate the energetics of non-commuting measurements in a circuit quantum electrodynamics system.
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.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: 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 non-commuting 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.
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