학술논문
Telecom networking with a diamond quantum memory
Document Type
Working Paper
Author
Bersin, Eric; Sutula, Madison; Huan, Yan Qi; Suleymanzade, Aziza; Assumpcao, Daniel R.; Wei, Yan-Cheng; Stas, Pieter-Jan; Knaut, Can M.; Knall, Erik N.; Langrock, Carsten; Sinclair, Neil; Murphy, Ryan; Riedinger, Ralf; Yeh, Matthew; Xin, C. J.; Bandyopadhyay, Saumil; Sukachev, Denis D.; Machielse, Bartholomeus; Levonian, David S.; Bhaskar, Mihir K.; Hamilton, Scott; Park, Hongkun; Lončar, Marko; Fejer, Martin M.; Dixon, P. Benjamin; Englund, Dirk R.; Lukin, Mikhail D.
Source
Subject
Language
Abstract
Practical quantum networks require interfacing quantum memories with existing channels and systems that operate in the telecom band. Here we demonstrate low-noise, bidirectional quantum frequency conversion that enables a solid-state quantum memory to directly interface with telecom-band systems. In particular, we demonstrate conversion of visible-band single photons emitted from a silicon-vacancy (SiV) center in diamond to the telecom O-band, maintaining low noise ($g^2(0)<0.1$) and high indistinguishability ($V=89\pm8\%$). We further demonstrate the utility of this system for quantum networking by converting telecom-band time-bin pulses, sent across a lossy and noisy 50 km deployed fiber link, to the visible band and mapping their quantum states onto a diamond quantum memory with fidelity $\mathcal{F}=87\pm 2.5 \% $. These results demonstrate the viability of SiV quantum memories integrated with telecom-band systems for scalable quantum networking applications.
Comment: 9 pages, 5 figures + Supplemental Materials
Comment: 9 pages, 5 figures + Supplemental Materials