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- W4313251231 abstract "Quantum metrology enhances measurement precision by utilising the properties of quantum physics. In interferometry, this is typically achieved by evolving highly-entangled quantum states before performing single-shot measurements to reveal information about an unknown parameter. While this is often the optimum approach, implementation with all but the smallest states is still extremely challenging. An alternative approach is quantum jump metrology [L. A. Clark et al., Phys. Rev. A 99, 022102 (2019)] which deduces information by continuously monitoring an open quantum system, while inducing phase-dependent temporal correlations with the help of quantum feedback. Taking this approach here, we analyse measurements of a relative phase in an optical network of two cavities with quantum feedback in the form of laser pulses. It is shown that the proposed approach can exceed the standard quantum limit without the need for complex quantum states while being scalable and more practical than previous related schemes." @default.
- W4313251231 created "2023-01-06" @default.
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- W4313251231 date "2022-12-27" @default.
- W4313251231 modified "2023-09-27" @default.
- W4313251231 title "Quantum jump metrology in a two-cavity network" @default.
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- W4313251231 doi "https://doi.org/10.1103/physreva.106.062619" @default.
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