Mullan, M.
and Knill, E.
(2014),
Optimizing Passive Quantum Clocks, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.90.042310
(Accessed May 21, 2025)
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Optimizing Passive Quantum Clocks
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Author(s)
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Abstract
We describe protocols for passive atomic clocks based onquantum interrogation of the atoms. Unlike previous techniques, our protocols are adaptive and take advantage of prior information about the clock's state. To reduce deviations from an ideal clock, each interrogation is optimized by means of a semidefinite program for atomic state preparation and measurement whose objective function depends on the prior information. Our knowledge of the clock's state is maintained according to a Bayesian model that accounts for noise and measurement results. We implement a full simulation of a running clock with power-law noise models and find significant improvements by applying our techniques.Citation
Physical Review A
Volume
90
Issue
4
Pub Type
Journals
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Keywords
heisenberg limit, semidefinite programming, quantum logic clocks, standard quantum limit
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Created October 7, 2014, Updated October 12, 2021