Off-diagonal mixed state phases in unitary evolution

Details Off-diagonal mixed state phases in unitary evolution Off-diagonal mixed state phases in unitary evolution

2002-12-19

arxiv.org/abs/quant-ph/0212111v1

Foundations of probability and physics - 2, ed. by A. Khrennikov (V\"axj\"o Univ. Press, 2003), p. 545.

Physics

Quantum Physics

To appear in "Foundations of probability and physics - 2", ed. by A. Khrennikov; series ``Math. Modelling in Physics, Engineer

Scientific paper

Off-diagonal mixed state phases based upon a concept of orthogonality adapted to unitary evolution and a proper normalisation condition are introduced. Some particular instances are analysed and parallel transport leading to the off-diagonal mixed state geometric phase is delineated. A complete experimental realisation of the off-diagonal mixed state geometric phases in the qubit case using polarisation-entangled two-photon interferometry is proposed.

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