Towards Telecommunication-Band Quantum Networking with an Atom-Cavity Platform

POSTER

Abstract

Long-range quantum networking enables a broad range of applications in quantum information science, such as secure communication and distributed quantum sensing. We report progress towards telecommunication-band quantum networking with individually trapped 87Rb atoms, leveraging their 5P3/2 to 4D5/2 transition at 1530 nm. First, we demonstrate cascaded emission, generating a pair of single photons at 780 nm and 1530 nm, verified by cross-correlation measurements. Second, to serve as an efficient photonic interface, we fabricate dual-wavelength microcavities. These are formed between a laser-ablated fiber and a microfabricated silicon mirror, achieving cooperativities of 240 and 170 at 780 nm and 1530 nm, respectively. Such advancements lay the groundwork for scalable, long-range quantum networking and integration with silicon nanophotonics for multiplexing and on-chip entanglement routing.

*This work was supported by the Center for Ultracold Atoms (an NSF Physics Frontiers Center), DARPA ONISQ (award number W911NF2010021), Army Research Office (award number W911NF2010082), and the DOE LBNL Quantum Systems Accelerator (DE-AC02-05CH11231), and Quera Computing (award number A44440).

Presenters

  • Matthew Bilotta

    • Harvard University

Authors

  • Matthew Bilotta

    • Harvard University

  • Andrei Ruskuc

    • Harvard University

  • Eirini Mandopoulou

    • Harvard University

  • Brandon Grinkemeyer

    • Harvard University

  • Danilo Shchepanovich

    • Harvard University

  • Sophie Weiyi Ding

    • Harvard University

  • Offek Tziperman

    • Harvard University

  • Michel Tao

    • Harvard University

  • Marco Loncar

    • Harvard University

  • Vladan Vuletic

    • Massachusetts Institute of Technology

  • Mikhail D Lukin

    • Harvard University