Photonic Quantum Networks formed from NV(-) centers
#MMPMID27215433
Nemoto K
; Trupke M
; Devitt SJ
; Scharfenberger B
; Buczak K
; Schmiedmayer J
; Munro WJ
Sci Rep
2016[May]; 6
(?): 26284
PMID27215433
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In this article we present a simple repeater scheme based on the
negatively-charged nitrogen vacancy centre in diamond. Each repeater node is
built from modules comprising an optical cavity containing a single NV(-), with
one nuclear spin from (15)N as quantum memory. The module uses only deterministic
processes and interactions to achieve high fidelity operations (>99%), and
modules are connected by optical fiber. In the repeater node architecture, the
processes between modules by photons can be in principle deterministic, however
current limitations on optical components lead the processes to be probabilistic
but heralded. Our resource-modest repeater architecture contains two modules at
each node, and the repeater nodes are then connected by entangled photon pairs.
We discuss the performance of such a quantum repeater network with modest
resources and then incorporate more resource-intense strategies step by step. Our
architecture should allow large-scale quantum information networks with existing
or near future technology.