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We observe a narrow, isolated, two-photon absorption resonance in Rb for large one-photon detuning in the presence of a buffer gas. In the absence of buffer gas, a standard Lambda configuration of two laser frequencies gives rise to…

We investigate the collective dynamics of a three-level ensemble under the Dicke limit, revealing a unified connection between superradiant emission and electromagnetically induced transparency (EIT). Our results show that the transient…

Energy Absorption Interferometry (EAI) is a technique for measuring the responsivities and complex-valued spatial polarimetric forms of the individual degrees of freedom through which a many-body system can absorb energy. It was originally…

Optics · Physics 2026-02-03 Stafford Withington , Willem Jellema

We study intensity distribution of transmission resonances under the conditions of electromagnetically induced transparency (EIT) with lin||lin configuration in 87Rb vapor. We demonstrate that for various orientations of the external…

This work presents a comprehensive theoretical comparison between absorption-based and electromagnetically induced transparency (EIT)-based atomic gradient sensing in a four-level tripod system. Both methods were evaluated under identical…

Quantum Physics · Physics 2025-12-03 Mahboob Ul Haq

We report a preliminary experimental study of EIT and stored light in the high optical depth regime. In particular, we characterize two ways to mitigate radiation trapping, a decoherence mechanism at high atomic density: nitrogen as buffer…

Quantum Physics · Physics 2009-07-07 M. Klein , Y. Xiao , M. Hohensee , D. F. Phillips , R. L. Walsworth

Electromagnetically-induced transparency (EIT) exploits quantum coherence to burn subnatural linewidth holes within a spectral line. We investigate the less explored properties of EIT to effect absorptive nonlinear processes without…

Electromagnetically induced transparency (EIT) analogue in all-dielectric metamaterials with a high quality factor provides an effective route to enhance light-matter interaction at the nanoscale. In particular, the active control applied…

Optics · Physics 2020-10-15 Tingting Liu , Huaixing Wang , Chaobiao Zhou , Xiaoyun Jiang , Shuyuan Xiao

Electromagnetically induced transparency (EIT) is predicted for x rays in laser-dressed neon gas. The x-ray photoabsorption cross section and polarizability near the Ne K edge are calculated using an ab initio theory suitable for optical…

Atomic Physics · Physics 2008-11-26 Christian Buth , Robin Santra , Linda Young

We investigate a recently proposed scheme for differential detection of the magneto-optical rotation effect and its application to electromagnetically induced transparency (EIT) atomic clocks. This scheme utilizes a linearly polarized…

Instrumentation and Detectors · Physics 2017-07-29 Melissa A. Guidry , Elena Kuchina , Irina Novikova , Eugeniy E. Mikhailov

Dicke narrowing is a phenomena that dramatically reduces the Doppler width of spectral lines, due to frequent velocity-changing collisions. A similar phenomena occurs for electromagnetically induced transparency (EIT) resonances, and…

Quantum Physics · Physics 2007-08-18 M. Shuker , O. Firstenberg , R. Pugatch , A. Ben-Kish , A. Ron , N. Davidson

We study the intensity-intensity correlations of the radiation emitted on probe transition in a three level cascade electromagnetically induced transparency (EIT) scheme. By applying an incoherent pump, we also monitor further changes in…

Quantum Physics · Physics 2014-09-04 Shaik Ahmed , Preethi N. Wasnik , Suneel Singh , P. Anantha Lakshmi

Dissipation and decoherence of quantum systems in thermal environments is important to various spectroscopies. It is generally believed that dissipation can broaden the line shape of spectroscopies, and thus stronger system-bath interaction…

Quantum Physics · Physics 2024-05-07 Ru-Qiong Deng , Cheng-Ge Liu , Yi-Xuan Yao , Jing-Yi-Ran Jin , Hao-Yue Zhang , Yin Song , Qing Ai

We measure the noise correlations of two-dimensional (2D) Bose gases after free expansion, and use them to characterize the in-situ phase coherence across the Berezinskii-Kosterlitz-Thouless (BKT) transition. The noise-correlation function…

Electromagnetically induced transparency (EIT) resonances using the $5\rm{S}_{1/2}\rightarrow5\rm{P}_{3/2}\rightarrow5\rm{D}_{5/2}$ ladder-system in optically thick Rb atomic vapour are studied. We observe a strong line narrowing effect and…

Atomic Physics · Physics 2014-07-10 James Keaveney , Armen Sargsyan , David Sarkisyan , Aram Papoyan , Charles S. Adams

A new configuration for observation of magneto-optical subnatural-linewidth resonances of electromagnetically induced absorption (EIA) in alkali vapor has been verified experimentally. The configuration includes using two…

Electrical impedance tomography (EIT) is highly affected by modeling errors regarding electrode positions and the shape of the imaging domain. In this work, we propose a new inclusion detection technique that is completely independent of…

Analysis of PDEs · Mathematics 2018-10-11 Bastian Harrach , Eunjung Lee , Marcel Ullrich

Metamaterial analogues of electromagnetically induced transparency (EIT) have been intensively studied and widely employed for slow light and enhanced nonlinear effects. In particular, the active modulation of the EIT analogue and…

Optics · Physics 2017-11-15 Shuyuan Xiao , Tao Wang , Tingting Liu , Xicheng Yan , Zhong Li , Chen Xu

Electromagnetically-induced transparency (EIT) has been proposed as a way to greatly enhance cross-phase modulation, with the possibility of leading to few-photon-level optical nonlinearities. This enhancement grows as the transparency…

Atomic Physics · Physics 2016-01-27 Amir Feizpour , Greg Dmochowski , Aephraim M. Steinberg

"EIT waves" are a wavelike phenomenon propagating in the corona, which were initially observed in the extreme ultraviolet (EUV) wavelength by the EUV Imaging Telescope (EIT). Their nature is still elusive, with the debate between fast-mode…

Solar and Stellar Astrophysics · Physics 2015-05-18 H. Q. Yang , P. F. Chen