Enhancing quantum Fisher information by utilizing uncollapsing measurements
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- 作者：Juan Hea ; juanhe78@163.com" class="auth_mail" title="E-mail the corresponding author ; Zhi-Yong Dinga ; Liu Yeb
- 关键词：Quantum Fisher information ; Parameter estimation ; Quantum uncollapsing measurements
- 刊名：Physica A: Statistical Mechanics and its Applications
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：457
- 期：Complete
- 页码：598-606
- 全文大小：1007 K
文摘
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We propose an effective scheme for enhancing quantum Fisher information.
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The optimal measurement strength is only related to the weight parameter.
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The scheme can be extended to science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0378437116301157&_mathId=si15.gif&_user=111111111&_pii=S0378437116301157&_rdoc=1&_issn=03784371&md5=8791c735d7e58332254c5fd31ebb17d4" title="Click to view the MathML source">N-qubit pure state and open system.