Multipartite Entanglement Among Single Spins in Diamond
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.
- Publication:
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Science
- Pub Date:
- June 2008
- DOI:
- 10.1126/science.1157233
- Bibcode:
- 2008Sci...320.1326N
- Keywords:
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- PHYSICS