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arXiv · 2106.07522

Quantum Computing by Cooling

Jiajin Feng·Biao Wu·Frank Wilczek
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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 non-Markovian bath of spins that serve as a heat sink. We demonstrate both analytically and numerically that this strategy can achieve quantum advantage in the Grover search problem.

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Jiajin Feng, Biao Wu, Frank Wilczek. 2021-06-14. Quantum Computing by Cooling. https://doi.org/10.1103/physreva.105.052601

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