Quantum Heating of a nonlinear resonator probed by a superconducting qubit
arXiv:1210.3472 · doi:10.1103/PhysRevLett.110.047001
Abstract
We measure the quantum fluctuations of a pumped nonlinear resonator, using a superconducting artificial atom as an in-situ probe. The qubit excitation spectrum gives access to the frequency and temperature of the intracavity field fluctuations. These are found to be in agreement with theoretical predictions; in particular we experimentally observe the phenomenon of quantum heating.
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