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arXiv · 2302.11450

Prediction-retrodiction measurements for teleportation and conditional state transfer

Sergey A. Fedorov·Emil Zeuthen
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Abstract

Regular measurements allow predicting the future and retrodicting the past of quantum systems. Time-non-local measurements can leave the future and the past uncertain, yet establish a relation between them. We show that continuous time-non-local measurements can be used to transfer a quantum state via teleportation or direct transmission. Considering two oscillators probed by traveling fields, we analytically identify strategies for performing the state transfer perfectly across a wide range of linear oscillator-field interactions beyond the pure beamsplitter and two-mode-squeezing types.

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Sergey A. Fedorov, Emil Zeuthen. 2023-02-22. Prediction-retrodiction measurements for teleportation and conditional state transfer. https://doi.org/10.1103/physrevlett.131.060801

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