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Quantum speed limit for a thermal state after a quench | Oleg Lychkovskiy
; | Date: |
13 May 2020 | Abstract: | Quantum speed limits are rigorous estimates on how fast a state of a quantum
system can depart from the initial state in the course of quantum evolution. We
derive a quantum speed limit for a system initially prepared in a thermal state
and evolving after a quench of its Hamiltonian. This quantum speed limit
exploits the structure of the thermal state and, in particular, explicitly
depends on the temperature. As a consequence, it can be dramatically tighter
than general quantum speed limits applied to thermal states. | Source: | arXiv, 2005.6416 | Services: | Forum | Review | PDF | Favorites |
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