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Multipartite Entanglement Among Single Spins in Diamond
Ist Teil von
Science (American Association for the Advancement of Science), 2008-06, Vol.320 (5881), p.1326-1329
Ort / Verlag
Washington, DC: American Association for the Advancement of Science
Erscheinungsjahr
2008
Quelle
American Association for the Advancement of Science
Beschreibungen/Notizen
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.