dorsal/arxiv
View SchemaOff-diagonal geometric phase for mixed states
| Authors | Stefan Filipp, Erik Sjöqvist |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0209087 |
| URL | https://arxiv.org/abs/quant-ph/0209087 |
| DOI | 10.1103/PhysRevLett.90.050403 |
| Journal | Phys. Rev. Lett. 90, 050403 (2003) |
Abstract
We extend the off-diagonal geometric phase [Phys. Rev. Lett. {\bf 85}, 3067 (2000)] to mixed quantal states. The nodal structure of this phase in the qubit (two-level) case is compared with that of the diagonal mixed state geometric phase [Phys. Rev. Lett. {\bf 85}, 2845 (2000)]. Extension to higher dimensional Hilbert spaces is delineated. A physical scenario for the off-diagonal mixed state geometric phase in polarization-entangled two-photon interferometry is proposed.
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"abstract": "We extend the off-diagonal geometric phase [Phys. Rev. Lett. {\\bf 85}, 3067\n(2000)] to mixed quantal states. The nodal structure of this phase in the qubit\n(two-level) case is compared with that of the diagonal mixed state geometric\nphase [Phys. Rev. Lett. {\\bf 85}, 2845 (2000)]. Extension to higher dimensional\nHilbert spaces is delineated. A physical scenario for the off-diagonal mixed\nstate geometric phase in polarization-entangled two-photon interferometry is\nproposed.",
"arxiv_id": "quant-ph/0209087",
"authors": [
"Stefan Filipp",
"Erik Sj\u00f6qvist"
],
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"doi": "10.1103/PhysRevLett.90.050403",
"journal_ref": "Phys. Rev. Lett. 90, 050403 (2003)",
"title": "Off-diagonal geometric phase for mixed states",
"url": "https://arxiv.org/abs/quant-ph/0209087"
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