Volume 121, Number 5, March 2018
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||26 April 2018|
Modulation of controlled-not gate using light beams carrying orbital angular momentum in a nonlinear atomic vapor
1 School of Physics and Optoelectronic Engineering, Xidian University - Xi'an, Shaanxi 710071, China
2 Atomic and Molecular Physics Key Discipline in Shaan'xi Province, School of Mechanical and Material Engineering Xi'an University - Xi'an, Shaanxi 710065, China
Received: 7 February 2018
Accepted: 3 April 2018
We propose and experimentally demonstrate a controlled-not gate with light beams carrying orbital angular momentum (OAM) through a degenerate four-wave mixing process via a photonic band gap structure satisfying the phase-matching condition. By employing the different topological charges of a Laguerre-Gaussian beam as a qubit in this nonlinear process, the controlled-not gate with OAM can be realized. Moreover, we investigate the evolution of the controlled-not gate, which can be modulated by the frequency and the power of the incident beam, i.e., under electromagnetically induced transparency conditions. The study results are useful for applications in quantum communication and information storage.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 42.50.Ct – Quantum description of interaction of light and matter; related experiments / 42.25.Kb – Coherence
© EPLA, 2018
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.