Time-reversal frameness and superselection

Details Time-reversal frameness and superselection Time-reversal frameness and superselection

2008-11-24

arxiv.org/abs/0811.3980v2

Journal of Mathematical Physics 50: 102105 (Oct 2009)

Physics

Quantum Physics

10 pp

Scientific paper

10.1063/1.3243821

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.

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