2024-04-17 インペリアル・カレッジ・ロンドン(ICL)
＜関連情報＞
- https://www.imperial.ac.uk/news/252621/crucial-connection-quantum-internet-made-first/
- https://www.science.org/doi/10.1126/sciadv.adi7346
量子ドットの単一光子源と原子量子メモリーを接続し、通信光を決定論的に保存・検索することに成功 Deterministic storage and retrieval of telecom light from a quantum dot single-photon source interfaced with an atomic quantum memory
SARAH E. THOMAS, LUKAS WAGNER, RAPHAEL JOOS, ROBERT SITTIG, […], AND PATRICK M. LEDINGHAM
Science Advances Published:12 Apr 2024
DOI:https://doi.org/10.1126/sciadv.adi7346
Abstract
A hybrid interface of solid-state single-photon sources and atomic quantum memories is a long sought-after goal in photonic quantum technologies. Here, we demonstrate deterministic storage and retrieval of light from a semiconductor quantum dot in an atomic ensemble quantum memory at telecommunications wavelengths. We store single photons from an indium arsenide quantum dot in a high-bandwidth rubidium vapor–based quantum memory, with a total internal memory efficiency of (12.9 ± 0.4)%. The signal-to-noise ratio of the retrieved light field is 18.2 ± 0.6, limited only by detector dark counts.
