dorsal/arxiv
View SchemaOptimal estimation of squeezing
| Authors | G. Chiribella, G. M. D'Ariano, M. F. Sacchi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0601103 |
| URL | https://arxiv.org/abs/quant-ph/0601103 |
| DOI | 10.1103/PhysRevA.73.062103 |
| Journal | Phys. Rev. A 73, 062103 (2006) |
Abstract
We present the optimal estimation of an unknown squeezing transformation of the radiation field. The optimal estimation is unbiased and is obtained by properly considering the degeneracy of the squeezing operator. For coherent input states, the r.m.s. of the estimation scales as $(2\sqrt {\bar n})^{-1}$ versus the average photon number $\bar n$, while it can be enhanced to $(2\bar n)^{-1}$ by using displaced squeezed states.
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"abstract": "We present the optimal estimation of an unknown squeezing transformation of\nthe radiation field. The optimal estimation is unbiased and is obtained by\nproperly considering the degeneracy of the squeezing operator. For coherent\ninput states, the r.m.s. of the estimation scales as $(2\\sqrt {\\bar n})^{-1}$\nversus the average photon number $\\bar n$, while it can be enhanced to $(2\\bar\nn)^{-1}$ by using displaced squeezed states.",
"arxiv_id": "quant-ph/0601103",
"authors": [
"G. Chiribella",
"G. M. D\u0027Ariano",
"M. F. Sacchi"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.062103",
"journal_ref": "Phys. Rev. A 73, 062103 (2006)",
"title": "Optimal estimation of squeezing",
"url": "https://arxiv.org/abs/quant-ph/0601103"
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