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Updated: Jul 18, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Prediction-Retrodiction Measurements for Teleportation and Conditional State Transfer
Sergey A Fedorov1, Emil Zeuthen1
1Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
Abstract:
Regular measurements allow predicting the future and retrodicting the past of quantum systems. Time-nonlocal measurements can leave the future and the past uncertain, yet establish a relation between them. We show that continuous time-nonlocal 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 beam-splitter and two-mode-squeezing types.
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