Two-Photon Quantum Interference from Separate Nitrogen Vacancy Centers in Diamond
2012; American Physical Society; Volume: 108; Issue: 4 Linguagem: Inglês
10.1103/physrevlett.108.043604
ISSN1092-0145
AutoresHannes Bernien, Lilian Childress, Lucio Robledo, Matthew Markham, Daniel J. Twitchen, Ronald Hanson,
Tópico(s)Force Microscopy Techniques and Applications
ResumoWe 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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