Time-reversal frameness and superselection

Gilad Gour, Barry C. Sanders, Peter S. Turner

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)


We show that appropriate superpositions of motional states are a reference frame resource that enables breaking of time -reversal superselection so that two parties lacking knowledge about the other's direction of time can still communicate. We identify the time-reversal reference frame resource states and determine the corresponding frameness monotone, which connects time-reversal frameness to entanglement. In contradistinction to other studies of reference frame quantum resources, this is the first analysis that involves an antiunitary rather than unitary representation.
Original languageEnglish
JournalJournal of Mathematical Physics
Publication statusPublished - 2009

Bibliographical note

10 pp


  • quant-ph


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