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Cited by 189

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Fundamental quantum limit in precision phase measurement

Ou, Z. Y.·1997·Physical Review A

Abstract

We show through a series of arguments that, given a total average photon number 〈N〉, the fundamental limit in the precision phase measurement is set by quantum mechanics to be the so-called Heisenberg limit, i.e., 1/〈N〉. Some specific types of phase measurement are considered in the discussion. However, the proof based on the general principle of complementarity of quantum mechanics applies to any scheme of phase measurement. From the general argument by the complementarity principle, we are able to find a necessary condition for those states that can achieve the Heisenberg limit if they are employed for precision phase measurement. A general guideline is given for the search of the measurement schemes in which the Heisenberg limit is achieved. We demonstrate the procedure by applying it to a few specific examples.

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Metadata

Authors
Ou, Z. Y.
Venue
Physical Review A
Published
1997-04-01
Volume
55
Issue
4
Pages
2598-2609
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
OpenAlex
W2066074017
Cited by
189
References
2
FWCI
0.95
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Fundamental quantum limit in precision phase measurement. https://app.cochat.ai/papers/10.1103/physreva.55.2598
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Ou, Z. Y. (1997). Fundamental quantum limit in precision phase measurement. Physical Review A. https://doi.org/10.1103/physreva.55.2598

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