Zero to pi continuously controllable cross-phase modulation in a Doppler-broadened N-type electromagnetically-induced-transparency medium

Published

October 29, 2015

Author(s)

Lu Deng, Edward W. Hagley, R B. Li, C J. Zhu

Abstract

We demonstrate an observation of zero to π continuously controllable cross-phase- modulation based on an N-type electromagnetically-induced-transparency scheme in a room-temperature 87Rb vapor. We theoretically and experimentally show that the signal field acquires a π phase shift compared with the reference light in the presence of the phase-control field. Using the method of the optical Mach-Zehnder interferometer, we demonstrate that a zero to π continuously controllable phase gate can be built by modulating the phase- control field. In addition, our theoretical calculation agrees well with the experimental observation, and the results presented in this work hold potential applications for the orthogonal polarization or vector gate in quantum information processing.

Citation

Physical Review A

Volume

92

Issue

(4)

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevA.92.043838

Keywords

cross-phase modulation, electromagnetically induced transparency

Citation

Deng, L. , Hagley, E. , Li, R. and Zhu, C. (2015), Zero to pi continuously controllable cross-phase modulation in a Doppler-broadened N-type electromagnetically-induced-transparency medium, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.92.043838 (Accessed October 16, 2025)