Tunable refrigerator for nonlinear quantum electric circuits

Hao Hsu*, Matti Silveri, Andras Gunyho, Jan Goetz, Gianluigi Catelani, Mikko Mottonen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

54 Lataukset (Pure)

Abstrakti

The emerging quantum technological applications call for fast and accurate initialization of the corresponding devices to low-entropy quantum states. To this end, we theoretically study a recently demonstrated quantum-circuit refrigerator in the case of nonlinear quantum electric circuits such as superconducting qubits. The maximum refrigeration rate of transmon and flux qubits is observed to be roughly an order of magnitude higher than that of usual linear resonators, increasing flexibility in the design. We find that for typical experimental parameters, the refrigerator is suitable for resetting different qubit types to fidelities above 99.99% in a few or a few tens of nanoseconds depending on the scenario. Thus the refrigerator appears to be a promising tool for quantum technology and for detailed studies of open quantum systems.

AlkuperäiskieliEnglanti
Artikkeli235422
Sivumäärä20
JulkaisuPhysical Review B
Vuosikerta101
Numero23
DOI - pysyväislinkit
TilaJulkaistu - 11 kesäkuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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