Transmitting quantum information by superposing causal order of mutually unbiased measurements

09/28/2019
by   Manish K Gupta, et al.
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Two quantum measurements sequentially acting one after the other, if they are mutually unbiased, will lead to a complete removal of information encoded in the input quantum state. We find that if the order of the two sequential measurements can be superposed, with a quantum switch, then the information encoded in the input can still be retained in the output state.

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