Quantum Computing by Coherent Cooling

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.

Wu, Biao (författare)
Wilczek, FrankStockholms universitet,Fysikum,Massachusetts Institute of Technology, USA; Shanghai Jiao Tong University, China; Arizona State University, USA(Swepub:su)wilczek (författare)
Stockholms universitetFysikum (creator_code:org_t)

Ingår i:Physical Review A: covering atomic, molecular, and optical physics and quantum information105:52469-99262469-9934

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.