Observation of quantum interference between a single-photon state and a thermal state generated in optical fibers.
We experimentally demonstrate a Hong-Ou-Mandel type of two-photon interference effect with a heralded single-photon state and a thermal state. The light sources in the 1550 nm telecom band are generated from two independent dispersion-shifted fibers via four-wave mixing process. The observed visibility is (82+/- 11)%. This type of interference between independent sources is crucial in quantum information process with independent qubits.
Li
Xiaoying
X
College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Key Laboratory of Optoelectronics Information Science and Technology, Ministry of Education, Tianjin 300072, PR China.
Yang
Lei
L
Cui
Liang
L
Ou
Zhe Yu
ZY
Yu
Daoyin
D
D016477:Artifacts; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008962:Models, Theoretical; D055100:Optical Fibers; D017785:Photons; D011789:Quantum Theory; D012542:Scattering, Radiation