{
  "id": "2008.09065",
  "version": "v1",
  "published": "2020-08-20T16:36:43.000Z",
  "updated": "2020-08-20T16:36:43.000Z",
  "title": "Channels, measurements and post-selection in quantum thermodynamics",
  "authors": [
    "Tom Purves",
    "Tony Short"
  ],
  "comment": "18 Pages",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We analyse 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 post-selected measurements, and show that any non-trivial post-selection leads to an unbounded work benefit.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-08-20T16:36:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum thermodynamics",
      "measurement",
      "conditional work cost",
      "unbounded work benefit",
      "quantum channel"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}