Abstract
We analyze the benefit, in terms of extracting work, of having a single use of a quantum channel or measurement in quantum thermodynamics. This highlights a connection between unital and catalytic channels, and some subtleties concerning the conditional work cost of implementing a measurement given that a certain result was obtained. We also consider postselected measurements and show that any nontrivial postselection leads to an unbounded work benefit.
| Original language | English |
|---|---|
| Article number | 014111 |
| Journal | Physical Review E |
| Volume | 104 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 12 Jul 2021 |
Bibliographical note
Funding Information:The authors acknowledge helpful conversations with S. Popescu. T.P. acknowledges support from the EPSRC (Grant No. EP/S139151-108).
Publisher Copyright:
© 2021 American Physical Society.
Research Groups and Themes
- Bristol Quantum Information Institute
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