dorsal/arxiv
View SchemaSampling the canonical phase from phase-space functions
| Authors | J. Fiurasek, M. Dakna, T. Opatrny, D. -G. Welsch |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0004059 |
| URL | https://arxiv.org/abs/quant-ph/0004059 |
| DOI | 10.1103/PhysRevA.62.063811 |
| Journal | Phys. Rev. A 62, 063811 (2000) |
Abstract
We discuss the possibility of sampling exponential moments of the canonical phase from the s-parametrized phase space functions. We show that the sampling kernels exist and are well-behaved for any s>-1, whereas for s=-1 the kernels diverge in the origin. In spite of that we show that the phase space moments can be sampled with any predefined accuracy from the Q-function measured in the double-homodyne scheme with perfect detectors. We discuss the effect of imperfect detection and address sampling schemes using other measurable phase-space functions. Finally, we discuss the problem of sampling the canonical phase distribution itself.
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"abstract": "We discuss the possibility of sampling exponential moments of the canonical\nphase from the s-parametrized phase space functions. We show that the sampling\nkernels exist and are well-behaved for any s\u003e-1, whereas for s=-1 the kernels\ndiverge in the origin. In spite of that we show that the phase space moments\ncan be sampled with any predefined accuracy from the Q-function measured in the\ndouble-homodyne scheme with perfect detectors. We discuss the effect of\nimperfect detection and address sampling schemes using other measurable\nphase-space functions. Finally, we discuss the problem of sampling the\ncanonical phase distribution itself.",
"arxiv_id": "quant-ph/0004059",
"authors": [
"J. Fiurasek",
"M. Dakna",
"T. Opatrny",
"D. -G. Welsch"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.62.063811",
"journal_ref": "Phys. Rev. A 62, 063811 (2000)",
"title": "Sampling the canonical phase from phase-space functions",
"url": "https://arxiv.org/abs/quant-ph/0004059"
},
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