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The Japan Society of Applied Physics

Complete Bell state measurement between carbon nuclear spin quantum memories in an NV center in diamond

Takaya Nakazato, Raustin Reyes, Nobuaki Imaike, Kazuyasu Matsuda, Yuhei Sekiguchi, Hideo Kosaka

Published Jul 9, 2020• 0 citations
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We describe a scheme for quantum anonymous voting of n participants based on the single nitrogen-vacancy centers in diamond. The scheme requires a bipartite entanglement creation between the electronic spins of the two distant NV centers, unitary operation of NV electronic spin together with n nearby nuclear spins of carbon isotopes, and one projective measurement of the electronic spin state - optical readout. As a result, the quantum anonymous voting protocol can be realized, making any attempt of the tallyman to learn who voted which way detectable.