Kinematic Approach to the Mixed State Geometric Phase in Nonunitary Evolution
Quantum Physics
550
0103 physical sciences
FOS: Physical sciences
Quantum Physics (quant-ph)
530
01 natural sciences
DOI:
10.1103/physrevlett.93.080405
Publication Date:
2004-08-21T02:10:32Z
AUTHORS (4)
ABSTRACT
A kinematic approach to the geometric phase for mixed quantal states in nonunitary evolution is proposed. This phase is manifestly gauge invariant and can be experimentally tested in interferometry. It leads to well-known results when the evolution is unitary.<br/>Minor changes; journal reference added<br/>
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