Title :
Demonstration of background-free, phase-preserving parametric up-conversion at the single-photon level
Author :
Cheng, Y.-H. ; Thomay, Tim O. ; Solomon, Glenn S. ; Migdall, Alan L. ; Polyakov, Sergey V.
Author_Institution :
Joint Quantum Inst., Univ. of Maryland, College Park, MD, USA
Abstract :
We demonstrate single-photon-level phase preservation in an up-converting interferometer. The up-conversion process is background-free to within experimental uncertainty, allowing high fringe contrast even at low photon levels. This enables faithful up-conversion of entangled photon pairs.
Keywords :
light interferometers; optical parametric devices; optical wavelength conversion; quantum entanglement; quantum optics; background-free parametric up-conversion; entangled photon pairs; experimental uncertainty; fringe contrast; low photon levels; phase-preserving parametric up-conversion; single-photon-level phase preservation; up-conversion process; up-converting interferometer; Band-pass filters; Frequency conversion; Nonlinear optics; Optical pumping; Optical waveguides; Optical wavelength conversion; Photonics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
