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Quantum Interference of Single Photons from Remote Nitrogen-Vacancy Centers in Diamond

2011/12/31 by Alp Sipahigil, Michael L. Goldman, Michael Goldman +9 · 6 citations
Engineering · Materials Science · Physics and Astronomy · #Atomic physics #Computer science #Condensed matter physics #Diamond #Diamond and Carbon-based Materials Research #Force Microscopy Techniques and Applications #Interference (communication) #Materials science #Nitrogen #Nitrogen-vacancy center #Nonlinear Optical Materials Studies #Optics #Photon #Physics #Quantum #Quantum computer #Quantum interference #Quantum mechanics #Quantum network #Quantum optics #Quantum sensor #Telecommunications #Vacancy defect #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevlett.108.143601

published as Phys. Rev. Lett. 108, 143601 (2012) · 5 pages, 3 figures

openalex publication_date 2012/04/03 · arxiv created 2012/04/11 · arxiv updated 2014/12/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We demonstrate quantum interference between indistinguishable photons emitted by two nitrogen-vacancy centers in distinct diamond samples separated by two meters. Macroscopic solid immersion lenses are used to enhance photon collection efficiency. Quantum interference is verified by measuring a value of the second-order cross-correlation function g((2))(0)=0.35±0.04<0.5. In addition, optical transition frequencies of two separated nitrogen-vacancy centers are tuned into resonance with each other by applying external electric fields. An extension of the present approach to generate entanglement of remote solid-state qubits is discussed.

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