Multipartite entanglement among single spins in diamond |
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| Authors: | Neumann P Mizuochi N Rempp F Hemmer P Watanabe H Yamasaki S Jacques V Gaebel T Jelezko F Wrachtrup J |
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| Institution: | 3.Physikalisches Institut, Universit?t Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany. |
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| Abstract: | Robust entanglement at room temperature is a necessary requirement for practical applications in quantum technology. We demonstrate the creation of bipartite- and tripartite-entangled quantum states in a small quantum register consisting of individual 13C nuclei in a diamond lattice. Individual nuclear spins are controlled via their hyperfine coupling to a single electron at a nitrogen-vacancy defect center. Quantum correlations are of high quality and persist on a millisecond time scale even at room temperature, which is adequate for sophisticated quantum operations. |
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