dorsal/arxiv
View SchemaFidelity for Multimode Thermal Squeezed States
| Authors | Gh. -S. Paraoanu, H. Scutaru |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9907068 |
| URL | https://arxiv.org/abs/quant-ph/9907068 |
| DOI | 10.1103/PhysRevA.61.022306 |
Abstract
In the theory of quantum transmission of information the concept of fidelity plays a fundamental role. An important class of channels, which can be experimentally realized in quantum optics, is that of Gaussian quantum channels. In this work we present a general formula for fidelity in the case of two arbitrary Gaussian states. From this formula one can get a previous result (H. Scutaru, J. Phys. A: Mat. Gen {\bf 31}, 3659 (1998)), for the case of a single mode; or, one can apply it to obtain a closed compact expression for multimode thermal states.
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"abstract": "In the theory of quantum transmission of information the concept of fidelity\nplays a fundamental role. An important class of channels, which can be\nexperimentally realized in quantum optics, is that of Gaussian quantum\nchannels. In this work we present a general formula for fidelity in the case of\ntwo arbitrary Gaussian states. From this formula one can get a previous result\n(H. Scutaru, J. Phys. A: Mat. Gen {\\bf 31}, 3659 (1998)), for the case of a\nsingle mode; or, one can apply it to obtain a closed compact expression for\nmultimode thermal states.",
"arxiv_id": "quant-ph/9907068",
"authors": [
"Gh. -S. Paraoanu",
"H. Scutaru"
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"doi": "10.1103/PhysRevA.61.022306",
"title": "Fidelity for Multimode Thermal Squeezed States",
"url": "https://arxiv.org/abs/quant-ph/9907068"
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