From Event: SPIE Optical Engineering + Applications, 2016
We present new quantum repeater architectures based on optical modules with NV diamond centers to highlight how physical properties of these optical modules change the operations, performance and limitations of the quantum repeater systems.We focus on two different approaches to construct optical modules, and see how the properties of modules propagate to the total system. The first approach to construct the optical module is to utilize the conditional refection dependent on the electron state of the single NV center in the cavity, and the other approach is to use absorption induced teleportation from an incoming photon to the nuclear spin of the NV center.
To characterize a quantum repeater system, the processes and protocols associated with photons are important.As photons are not reliable as an information carrier, i.e. quantum manipulations associated with photons are not deterministic, and the protocols and manipulations rely on post-selection to keep the fidelity of the quantum information.Post-selection is essential in quantum communications based on photons to maintain the fidelity of the communication, however it restricts the architecture of the system to be tolerant to probabilistic gates. This factor is cost intensive and is the key for the architectures to be scalable.We show that the details of how the scalability of the architectures can be affected by physical parameters of the modules.
Kae Nemoto, Michael Trupke, Burkhard Scharfenberger, Jörg Schmiedmayer, Michael Hanks, and Willam J. Munro, "A quantum repeater network formed with hybrid NV diamond modules
(Conference Presentation)," Proc. SPIE 9980, Quantum Communications and Quantum Imaging XIV, 998004 (Presented at SPIE Optical Engineering + Applications: August 28, 2016; Published: 7 December 2016); https://doi.org/10.1117/12.2237123.5178981886001.
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