Accession Number:



A Quantum Network with Atoms and Photons

Descriptive Note:

Technical Report

Corporate Author:

US Army Research Laboratory Adelphi United States

Report Date:


Pagination or Media Count:



The objective of our Directors Strategic Initiative DSI research is to help pioneer a quantum repeater network beyond the US ArmyResearch Laboratory ARL environment. The long-term goal is to achieve a quantum repeater network capability for the US Army.Initially, a quantum channel between ARL and the Joint Quantum Institute JQI at the University of Maryland - College Park wasinvestigated. Quantum repeaters will allow secure quantum communications to extend to distances where photon attenuation normallybecomes a limiting factor, and also allow quantum information to be transmitted and stored. The incipient quantum repeater networkdevelopment is based on an architecture where nodes are entangled with their nearest neighbors through photon interference, andentanglement chains are established and purified through entanglement swapping. We established a dark optical fiber link between ourquantum network laboratory and a quantum laboratory at JQI. We verified that the fiber link can carry entangled photons and quantuminformation. We constructed the rubidium Rb atomic memory magneto optical trap MOT cell and laser controls, and developedprotocols, hardware, and software to control the secure teleportation of information between quantum memories at ARL and JQI. Notably,we performed successful in-laboratory proof-of-principle photonic teleportation experiments. In this report, we present initial progress indeveloping the scientific underpinnings towards implementing an expandable quantum network with atoms and photons QNET-AP tofacilitate an intra-city quantum network connecting atomic memories.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Quantum Theory and Relativity
  • Fiber Optics and Integrated Optics

Distribution Statement: