Time-multiplexed measurements of nonclassical light at telecom wavelengths

2014/06/13 by Georg Harder, G. Harder, Christine Silberhorn +8 · 26 citations
Mathematics · Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Optical Sensing Technologies #Avalanche photodiode #Computer science #Detector #Laser #Mathematics #Multiplexing #Optical fiber #Optics #Optoelectronics #Parametric statistics #Photon #Physics #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Spontaneous parametric down-conversion #Telecommunications #Ultrashort pulse #Waveguide #Wavelength #quant-ph

paper · pdf · doi:10.1103/physreva.90.042105

published in Physical Review A 90(4) (American Physical Society) · 4.5 pages, 5 color figues. Comments welcome!

arxiv created 2014/06/13 · openalex publication_date 2014/10/07 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report the experimental reconstruction of the statistical properties of an ultrafast pulsed type II parametric down-conversion source in a periodically poled potassium titanyl phosphate waveguide at telecom wavelengths, with almost perfect photon-number correlations. We use a photon-number-resolving time-multiplexed detector based on a fiber-optical setup and a pair of avalanche photodiodes. By resorting to a germane data-pattern tomography, we assess the properties of the nonclassical light states with unprecedented precision.

Citations

• Photonic quantum technologies
• Invited Review Article: Single-photon sources and detectors
• Photon-number resolution using time-multiplexed single-photon detectors
• Tomography of quantum detectors
• Superconducting nanowire single-photon detectors: physics and applications
• Photon Number Statistics of Multimode Parametric Down-Conversion

Cited by

• Quantum state and mode profile tomography by the overlap
• Balanced homodyne detection with on-off detector systems: Observable nonclassicality criteria