Journal
PHYSICAL REVIEW LETTERS
Volume 108, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.043604
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Funding
- Dutch Organization for Fundamental Research on Matter (FOM)
- Netherlands Organization for Scientific Research (NWO)
- DARPA QuEST
- EU
- DARPA QuASAR
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We report on the observation of quantum interference of the emission from two separate nitrogen vacancy (NV) centers in diamond. Taking advantage of optically induced spin polarization in combination with polarization filtering, we isolate a single transition within the zero-phonon line of the nonresonantly excited NV centers. The time-resolved two-photon interference contrast of this filtered emission reaches 66%. Furthermore, we observe quantum interference from dissimilar NV centers tuned into resonance through the dc Stark effect. These results pave the way towards measurement-based entanglement between remote NV centers and the realization of quantum networks with solid-state spins.
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