Quantum Heating of a nonlinear resonator probed by a superconducting qubit
classification
🪐 quant-ph
cond-mat.mes-hallcond-mat.supr-con
keywords
quantumfluctuationsheatingnonlinearqubitresonatorsuperconductingaccess
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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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