A quantum network with atoms and photons (QNET-AP)

摘要

Enabling secure communication, unparalleled computing capabilities, and fundamental nonlocality physics exploration,the development of quantum repeaters is the key quantum information processing technology advanceneeded for implementing real world quantum networks beyond the laboratory environment. Currently, componentsexist for intra-laboratory quantum networks but no system exists for connecting distant ( 1 km ) quantummemories in the real world. We present a physics analysis of quantum repeater network designs for intracityoptical fiber connections between nodes based on atomic memories and linear optics. Long distances will necessitatethe use of (1) two-photon Hong-Ou-Mandel style interference between atomic ensembles for entanglementswapping, and (2) photonic qubit wavelength conversion between atomic emissions and photons at telecommunicationwavelengths in fiber. We report on our experimental progress towards implementing A Quantum Networkwith Atoms and Photons (QNET-AP), a quantum repeater network test-bed, between the US Army ResearchLaboratory (ARL) and the Joint Quantum Institute (JQI) of the National Institute of Standards and Technology(NIST) and the University of Maryland (UMD).© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.