Speeding up a quantum refrigerator via counterdiabatic driving

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • 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

Abstract

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.

Details

Original languageEnglish
Article number035407
Pages (from-to)1-8
Number of pages8
JournalPhysical Review B
Volume100
Issue number3
Publication statusPublished - 8 Jul 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • PYTHON FRAMEWORK, DYNAMICS, QUTIP

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