Autonomous quantum clocks: how thermodynamics limits our ability to measure time
By P. Erker, M. Mitchison, Ralph Silva, M. P. Woods, Nicolas Brunner, Marcus Huber. 2016
155 citations recorded by the source corpus.
We discuss the fundamental limitations and resources for measuring time. A prerequisite for any system to function as a clock is it being out of equilibrium. We thus introduce the concept of autonomous quantum clocks using only the minimal out-of-equilibrium resources, i.e. two thermal baths at different temperatures. We find a fundamental trade-off between the amount of heat dissipated and the performance of the clock in terms of accuracy and resolution. We present both universal arguments as well as a detailed simulation illustrating these behaviors. This shows that the amount of entropy increase according to the second law is a resource for timekeeping.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/86781fd7260669675557c36af9a8d96abe279ced
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
In Statistical and Nonlinear Physics
Citations in the corpus
- Quantum speed limits: from Heisenberg’s uncertainty principle to optimal quantum control (2017, background): “e, and Bon the second half, then Eq. (7) sets a limit on the product of standard deviations. Independent of the interpretation of Eq. (7) time can, generally, not be expressed as a Hermitian operator [7{9,47], and hence Eq. (7) cannot be reduced to the kFor the sake of accessibility we have chosen t”