Two-photon quantum interference from separate nitrogen vacancy centers in diamond

Two-photon quantum interference from separate nitrogen vacancy centers in diamond

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 nonre...

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Veröffentlicht in:Physical review letters 2012-01, Vol.108 (4), p.043604-043604, Article 043604
Hauptverfasser: Bernien, Hannes, Childress, Lilian, Robledo, Lucio, Markham, Matthew, Twitchen, Daniel, Hanson, Ronald
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container_title Physical review letters
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creator Bernien, Hannes
Childress, Lilian
Robledo, Lucio
Markham, Matthew
Twitchen, Daniel
Hanson, Ronald
description 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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title Two-photon quantum interference from separate nitrogen vacancy centers in diamond
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