Towards a Quantum Memory assisted MDI-QKD node
ORAL
Abstract
The creation of large quantum network that permits the communication of quantum states and the secure distribution of cryptographic keys requires multiple operational quantum memories. In this work we present our progress towards building a prototypical quantum network that performs the memory-assisted measurement device independent QKD protocol [1,2]. Currently our network combines the quantum part of the BB84 protocol with room-temperature quantum memory operation, while still maintaining relevant quantum bit error rates for single-photon level operation [3]. We will also discuss our efforts to use a network of two room temperature quantum memories, receiving, storing and transforming randomly polarized photons in order to realize Bell state measurements. [1] New Journal of Physics 16, 043005 (2014) [2] Phys. Rev. A 89, 012301 (2014) [3] arXiv:1609.08676
*The work was supported by the US-Navy Office of Naval Research, grant number N00141410801, the National Science Foundation, grant number PHY-1404398 and the Simons Foundation, grant number SBF241180.
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