Transmitting quantum information by superposing causal order of mutually unbiased measurements

September 28, 2019 Β· Declared Dead Β· πŸ› arXiv.org

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Authors Manish K. Gupta, Ujjwal Sen arXiv ID 1909.13125 Category quant-ph: Quantum Computing Cross-listed cs.IT, gr-qc Citations 3 Venue arXiv.org Last Checked 5 months ago
Abstract
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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