Integrated spin-wave quantum memory.

Autor: Zhu TX; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China., Su MX; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China., Liu C; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China., Liu YP; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.; Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China., Wang CF; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China., Liu PX; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China., Han YJ; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.; Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China., Zhou ZQ; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.; Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China., Li CF; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.; Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China., Guo GC; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.; Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China.
Jazyk: angličtina
Zdroj: National science review [Natl Sci Rev] 2024 May 01; Vol. 11 (11), pp. nwae161. Date of Electronic Publication: 2024 May 01 (Print Publication: 2024).
DOI: 10.1093/nsr/nwae161
Abstrakt: Photonic integrated quantum memories are essential for the construction of scalable quantum networks. Spin-wave quantum storage, which can support on-demand retrieval with a long lifetime, is indispensable for practical applications, but has never been demonstrated in an integrated solid-state device. Here, we demonstrate spin-wave quantum storage based on a laser-written waveguide fabricated in a 151 Eu 3+ :Y 2 SiO 5 crystal, using both the atomic frequency comb and noiseless photon-echo protocols. Qubits encoded with single-photon-level inputs are stored and retrieved with a fidelity of [Formula: see text], which is far beyond the maximal fidelity that can be obtained with any classical device. Our results underline the potential of laser-written integrated devices for practical applications in large-scale quantum networks, such as the construction of multiplexed quantum repeaters in an integrated configuration and high-density transportable quantum memories.
(© The Author(s) 2024. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.)
Databáze: MEDLINE