TY - JOUR

T1 - Quantum Maxwell's demon assisted by non-Markovian effects

AU - Poulsen, Kasper

AU - Majland, Marco

AU - Lloyd, Seth

AU - Kjaergaard, Morten

AU - Zinner, Nikolaj T.

N1 - Publisher Copyright: © 2022 American Physical Society.

PY - 2022/4/26

Y1 - 2022/4/26

N2 - Maxwell's demon is the quintessential example of information control, which is necessary for designing quantum devices. In thermodynamics, the demon is an intelligent being who utilizes the entropic nature of information to sort excitations between reservoirs, thus lowering the total entropy. So far, implementations of Maxwell's demon have largely been limited to Markovian baths. In our work, we study the degree to which such a demon may be assisted by non-Markovian effects using a superconducting circuit platform. The setup is two baths connected by a demon-controlled qutrit interface, allowing the transfer of excitations only if the overall entropy of the two baths is lowered. The largest entropy reduction is achieved in a non-Markovian regime and, importantly, due to non-Markovian effects, the demon performance can be optimized through proper timing. Our results demonstrate that non-Markovian effects can be exploited to boost the information transfer rate in quantum Maxwell demons.

AB - Maxwell's demon is the quintessential example of information control, which is necessary for designing quantum devices. In thermodynamics, the demon is an intelligent being who utilizes the entropic nature of information to sort excitations between reservoirs, thus lowering the total entropy. So far, implementations of Maxwell's demon have largely been limited to Markovian baths. In our work, we study the degree to which such a demon may be assisted by non-Markovian effects using a superconducting circuit platform. The setup is two baths connected by a demon-controlled qutrit interface, allowing the transfer of excitations only if the overall entropy of the two baths is lowered. The largest entropy reduction is achieved in a non-Markovian regime and, importantly, due to non-Markovian effects, the demon performance can be optimized through proper timing. Our results demonstrate that non-Markovian effects can be exploited to boost the information transfer rate in quantum Maxwell demons.

U2 - 10.1103/PhysRevE.105.044141

DO - 10.1103/PhysRevE.105.044141

M3 - Journal article

C2 - 35590580

AN - SCOPUS:85129703774

VL - 105

JO - Physical Review E

JF - Physical Review E

SN - 2470-0045

IS - 4

M1 - 044141

ER -