Ground state cooling of quantum systems via a one-shot measurement
P. V. Pyshkin, Da-Wei Luo, J. Q. You, and Lian-Ao Wu
TL;DR
This paper demonstrates that certain quantum systems can be cooled to their ground states using a single projective measurement on ancillas, providing conditions and methods for implementing this one-shot cooling technique.
Contribution
It introduces the concept of one-shot measurement ground-state cooling (OSMGSC) and offers a general inverse engineering approach to realize it.
Findings
Existence of quantum systems that can be cooled with a single measurement
Conditions for achieving one-shot measurement ground-state cooling
A general procedure for designing Hamiltonians for this cooling method
Abstract
We prove that there exists a family of quantum systems that can be cooled to their ground states by a one-shot projective measurement on the ancillas coupled to these systems. Consequently, this proof gives rise to the conditions for achieving the one-shot measurement ground-state cooling (OSMGSC). We also propose a general procedure for finding unitary propagators and corresponding Hamiltonians to realize such cooling by means of inverse engineering technique.
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