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 language | English (US) |
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Article number | 052601 |
Journal | Physical Review A |
Volume | 105 |
Issue number | 5 |
DOIs | |
State | Published - May 2022 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics