Speeding up a quantum refrigerator via counterdiabatic driving

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • RIKEN, RIKEN, Theoret Phys Lab, Cluster Pioneering Res
  • Natl Inst Quantum & Radiol Sci & Technol
  • Univ Michigan, University of Michigan System, University of Michigan, Dept Phys

Kuvaus

We study the application of a counterdiabatic driving (CD) technique to enhance the thermodynamic efficiency and power of a quantum Otto refrigerator based on a superconducting qubit coupled to two resonant circuits. Although the CD technique is originally designed to counteract nonadiabatic coherent excitations in isolated systems, we find that it also works effectively in the open system dynamics, improving the coherence-induced losses of efficiency and power. We compare the CD dynamics with its classical counterpart, and find a deviation that arises because the CD is designed to follow the energy eigenbasis of the original Hamiltonian, but the heat baths thermalize the system in a different basis. We also discuss possible experimental realizations of our model.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli035407
Sivut1-8
Sivumäärä8
JulkaisuPhysical Review B
Vuosikerta100
Numero3
TilaJulkaistu - 8 heinäkuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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