Spin-photon entanglement from a solid-state system at telecom wavelengths

P. Laccotripes; T. Müller; R. M. Stevenson; J. Skiba-Szymanska; D. A. Ritchie; A. J. Shields

doi:10.1117/12.3000965

13 March 2024 Spin-photon entanglement from a solid-state system at telecom wavelengths

P. Laccotripes, T. Müller, R. M. Stevenson, J. Skiba-Szymanska, D. A. Ritchie, A. J. Shields

Proceedings Volume 12911, Quantum Computing, Communication, and Simulation IV; 129110R (2024) https://doi.org/10.1117/12.3000965
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Efficient generation of entanglement between a stationary matter-qubit and a propagating photonic-qubit is a scientific and technological challenge of utmost importance for the realisation of fully-fledged quantum networks. Solid-state quantum emitters in the telecom C-band are a promising platform due to the minimal absorption of photons at these wavelengths and deterministic generation of high purity single photon flying qubits. Here, we use an InAs/InP quantum dot to implement an optically active spin-qubit and demonstrate high fidelity spin initialisation and coherent spin control of the resident electron. Lastly, for the first time we demonstrate high-fidelity spin-photon entanglement in a solid-state system with direct emission into the telecom C-band and obtain a lower bound on the entanglement fidelity of 80.07 %.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

P. Laccotripes, T. Müller, R. M. Stevenson, J. Skiba-Szymanska, D. A. Ritchie, and A. J. Shields "Spin-photon entanglement from a solid-state system at telecom wavelengths", Proc. SPIE 12911, Quantum Computing, Communication, and Simulation IV, 129110R (13 March 2024); https://doi.org/10.1117/12.3000965

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