Phonon-induced multi-color correlations in hBN single-photon emitters

Abstract

Color centers in hexagonal boron nitride have shown enormous promise as single-photon sources, but a clear understanding of electron-phonon interaction dynamics is critical to their development for quantum communications or quantum simulations. We demonstrate photon antibunching in the filtered auto- and cross-correlations $g_{lm}^{(2)}(\tau )$ between zero-, one- and two-phonon replicas of defect luminescence. Moreover, we combine autocorrelation measurements with a violation of the Cauchy-Schwarz inequality in the filtered cross-correlation measurements to distinguish a low quantum-efficiency defect from phonon replicas of a bright defect. With no background correction, we observe single photon purity of $g^{(2)}(0)=0.20$ in a phonon replica and cross-spectral correlations of $g_{lm}^{(2)}(0)=0.18$ between a phonon replica and the zero phonon line. These results illustrate a coherent interface between visible photons and mid-infrared phonons and provide a clear path toward control of photon-phonon entanglement in 2D materials.

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• The colored Hanbury Brown--Twiss effect

Cited by in corpus (15)

• Identifying Carbon as the Source of Visible Single Photon Emission from Hexagonal Boron Nitride
• Direct Measurement of Quantum Efficiency of Single Photon Emitters in Hexagonal Boron Nitride
• Vibrational signatures for the identification of single-photon emitters in hexagonal boron nitride
• Optical control of the charge state of color centers in hexagonal boron nitride
• Resonant and phonon-assisted ultrafast coherent control of a single hBN color center
• Photochromism in a Hexagonal Boron Nitride Single Photon Emitter
• Phonon sidebands of color centers in hexagonal boron nitride
• Single photon randomness originating from the symmetry of dipole emission and the unpredictability of spontaneous emission
• Optical repumping of resonantly excited quantum emitters in hexagonal boron nitride
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Single-photon generation from a neodymium ion in optical fiber at room temperature
• Large-Scale Statistical Analysis of Defect Emission in hBN: Revealing Spectral Families and Influence of Flakes Morphology
• Signatures of Non-Markovianity in Cavity-QED with Color Centers in 2D Materials
• Creating Quantum Emitters in Hexagonal Boron Nitride Deterministically on Chip-Compatible Substrates
• Intersystem Crossing and Exciton-Defect Coupling of Spin Defects in Hexagonal Boron Nitride