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- W1569255142 abstract "We present a quantum clock synchronization scheme of multiple parties which uses operation as the trigger to start the evolution of the initial state. In comparison, the existing protocols use measurement to start the evolution. We show that our protocol links the problem to a multiple-phase estimation problem, such that we have provided a general framework for the study of quantum clock synchronization. We can use the Fisher information to give the precision of the synchronization, and we explicitly show that the Heisenberg scale of synchronization is achieved in the two-party case. We prove that the measurement-triggered quantum clock synchronization is included in the operation-triggered quantum clock synchronization, so the operation-triggered quantum clock synchronization is, in general, more powerful than measurement-triggered quantum clock synchronization. We show that our protocol is very efficient in synchronizing a clock to the average time of other clocks." @default.
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- W1569255142 date "2015-09-21" @default.
- W1569255142 modified "2023-10-15" @default.
- W1569255142 title "Operation-triggered quantum clock synchronization" @default.
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- W1569255142 doi "https://doi.org/10.1103/physreva.92.032321" @default.
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