Quantum Computing by Coherent Cooling

Jia Jin Feng, Biao Wu, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

Abstract

Interesting problems in quantum computation take the form of finding low-energy states of (pseudo)spin systems with engineered Hamiltonians that encode the problem data. Motivated by the practical possibility of producing very low-Temperature spin systems, we propose and exemplify the possibility to compute by coupling the computational spins to a quantum coherent bath that serves as a heat sink. The quantum tunneling effect provides additional cooling channels to accelerate the cooling process. We demonstrate both analytically and numerically that this strategy can achieve a quantum advantage in the unstructured search problem.

Original languageEnglish (US)
Article number052601
JournalPhysical Review A
Volume105
Issue number5
DOIs
StatePublished - May 2022

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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