dorsal/arxiv
View SchemaEntropy of phase measurement: Quantum phase via quadrature measurement
| Authors | Zdeněk Hradil, Robert Myška, Tomáš Opatrný, Jiří Bajer |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9506001 |
| URL | https://arxiv.org/abs/quant-ph/9506001 |
| DOI | 10.1103/PhysRevA.53.3738 |
Abstract
The content of phase information of an arbitrary phase--sensitive measurement is evaluated using the maximum likelihood estimation. The phase distribution is characterized by the relative entropy--a nonlinear functional of input quantum state. As an explicit example the multiple measurement of quadrature operator is interpreted as quantum phase detection achieving the ultimate resolution predicted by the Fisher information.
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"abstract": "The content of phase information of an arbitrary phase--sensitive measurement\nis evaluated using the maximum likelihood estimation. The phase distribution is\ncharacterized by the relative entropy--a nonlinear functional of input quantum\nstate. As an explicit example the multiple measurement of quadrature operator\nis interpreted as quantum phase detection achieving the ultimate resolution\npredicted by the Fisher information.",
"arxiv_id": "quant-ph/9506001",
"authors": [
"Zden\u011bk Hradil",
"Robert My\u0161ka",
"Tom\u00e1\u0161 Opatrn\u00fd",
"Ji\u0159\u00ed Bajer"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.53.3738",
"title": "Entropy of phase measurement: Quantum phase via quadrature measurement",
"url": "https://arxiv.org/abs/quant-ph/9506001"
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