Broadband quantum light on a fiber-optic platform: from biphotons and heralded single photons to bright squeezed vacuum. (23rd May 2019)

• Record Type: Journal Article
• Authors: Petrovnin, K V; Smirnov, M A; Fedotov, I V; Voronin, A A; Latypov, I Z; Shmelev, A G; Talipov, A A; Matveeva, T V; Fedotov, A B; Moiseev, S A; Zheltikov, A M
• Is Part Of: Laser physics letters. Volume 16:Number 7(2019:Jul.)
• Publication Date: 2019-05-23
• Subjects: nonlinear fiber optics -- four-wave mixing -- quantum optics; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab1483
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: Four-wave mixing (FWM) of ultrashort laser pulses in a highly nonlinear photonic-crystal fiber is shown to provide a multimodal source of broadband quantum states of light. In the regime of low pump powers, generation of two-photon states and heralded single photons with a bandwidth up to ≈6 THz is demonstrated within an FWM-sideband tunability range of ≈55 THz. In the modality of heralded single-photon generation, three-detector measurements of the conditional second-order correlation function reveal a strong antibunching in the signal-photon channel, with more than 99.2% of the signal counts identified as truly single-photon states. At high pump powers, two-detector signal-idler correlation function measurements indicate broadband bright squeezed vacuum generation.