期刊
NEW JOURNAL OF PHYSICS
卷 17, 期 -, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1367-2630/17/7/073016
关键词
quantum metrology; Gaussian states; local estimation theory
资金
- EPSRC INSPIRE [EP/M003019/1]
- EPSRC [EP/M003019/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M003019/1] Funding Source: researchfish
Gaussian states are of increasing interest in the estimation of physical parameters because they are easy to prepare and manipulate in experiments. In this article, we derive formulae for the optimal estimation of parameters using two- and multi-mode Gaussian states. As an application of our result, we derive the optimal Gaussian probe states for the estimation of the parameter characterizing a one-mode squeezing channel.
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