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Abstract
This paper demonstrates the storage of photonic time-bin qubits for up to 20 milliseconds in a <sup>151</sup>Eu<sup>3+</sup>:Y<sub>2</sub>SiO<sub>5</sub> crystal using dynamical decoupling techniques and a small magnetic field. The quantum coherence of the memory is verified by storing two time-bin qubits for 20 ms, achieving an average memory output fidelity of 85 ± 2%. This represents a significant improvement in qubit storage time compared to previous solid-state devices.
Publisher
npj Quantum Information
Published On
Mar 15, 2022
Authors
Antonio Ortu, Adrian Holzäpfel, Jean Etesse, Mikael Afzelius
Tags
photonic
time-bin qubits
quantum coherence
memory fidelity
solid-state devices

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