Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Оптика и спектроскопия

Kerr Nonlinearity and EIT in a Double Lambda Type Atomic System

Hamid Reza Hamedi, Ali Khaledi‐Nasab, Ali Raheli

Published Jan 1, 2013• 0 citations
Publisher
DOI
10.7868/s003040341310005x

Related papers

Kerr nonlinearity and EIT in a double Lambda type atomic system

Hamid Reza Hamedi, Ali Khaledi‐Nasab, Ali Raheli

The giant Kerr nonlinearity in a four-level double Lambda type atomic system is theoretically predicted. We find that an enhanced Kerr nonlinearity can be achieved just by the intensity of coupling filed that lies within the transparency window. It is also shown that the giant Kerr nonlinearity with reduced absorption can be achieved by the quantum interference mechanisms.

Optics and Spectroscopy•Oct 1, 2013•16 citations

Giant Kerr nonlinearity in a four-level atomic medium

Hamid Reza Hamedi, Seyyed Hossein Asadpour, Mostafa Sahrai

Optik•Mar 31, 2012•36 citations

Colossal Kerr nonlinearity based on electromagnetically induced transparency in a five-level double-ladder atomic system

Hamid Reza Hamedi, Ali Hamrah Gharamaleki, Mostafa Sahrai

The paper is aimed at modeling the enhanced Kerr nonlinearity in a five-level double-ladder-type atomic system based on electromagnetically induced transparency (EIT) by using the semi-classical density matrix method. We present an analytical model to explain the origin of Kerr nonlinearity enhancement. The scheme also results in a several orders of magnitude increase in the Kerr nonlinearity in comparison with the well-known four- and three-level atomic systems. In addition to the steady-state case, the time-dependent Kerr nonlinearity and the switching feature of EIT-based colossal Kerr nonlinearity is investigated for the proposed system.

Applied Optics•Jul 21, 2016•31 citations

Influence of Kerr-like medium on a nonlinear two-level atom

A.‐S. F. Obada, M. M. A. Ahmed, F. K. Faramawy +1 more

Chaos Solitons & Fractals•Oct 21, 2005•46 citations

Kerr nonlinearity with vanishing absorption in a left-handed three-level atomic system

Xiao Yong Yang, Yongyuan Jiang

Optik•Oct 4, 2013•0 citations

Polychromatic Kerr nonlinearity within electromagnetically induced transparency window

Guanghui Wang, Chuan-Jia Shan, De-Ying Gao +3 more

We study the nonlinear effect in a three-level atomic system in Λ configuration. As two or more fields are confined within the common electromagnetically induced transparency (EIT) window, they directly disturb EIT dark state at the same time, which leads to the self- and cross-Kerr nonlinear interactions. Our scheme is different from the existed schemes based on three-level or multilevel systems only existing single type of nonlinear interactions. In the common EIT windows, the self- and cross-Kerr nonlinearities are established with suppressed linear absorption and our scheme can be generalized polychromatic Kerr nonlinearity. Because the atoms are almost trapped in the ground states and the atom population becomes unchanged, the scheme is robust to the atomic spontaneous emission. Our scheme is a promising avenue for preparation of squeezing and entanglement .

Results in Physics•Oct 1, 2021•6 citations
The paper is aimed at modeling the enhanced Kerr nonlinearity in a five-level double-ladder-type atomic system based on electromagnetically induced transparency (EIT) by using the semi-classical density matrix method. We present an analytical model to explain the origin of Kerr nonlinearity enhancement. The scheme also results in a several orders of magnitude increase in the Kerr nonlinearity in comparison with the well-known four- and three-level atomic systems. In addition to the steady-state case, the time-dependent Kerr nonlinearity and the switching feature of EIT-based colossal Kerr nonlinearity is investigated for the proposed system.
We study the nonlinear effect in a three-level atomic system in Λ configuration. As two or more fields are confined within the common electromagnetically induced transparency (EIT) window, they directly disturb EIT dark state at the same time, which leads to the self- and cross-Kerr nonlinear interactions. Our scheme is different from the existed schemes based on three-level or multilevel systems only existing single type of nonlinear interactions. In the common EIT windows, the self- and cross-Kerr nonlinearities are established with suppressed linear absorption and our scheme can be generalized polychromatic Kerr nonlinearity. Because the atoms are almost trapped in the ground states and the atom population becomes unchanged, the scheme is robust to the atomic spontaneous emission. Our scheme is a promising avenue for preparation of squeezing and entanglement .