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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

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

We show how a medium, under the influece of a coherent control field which is resonant or close to resonance to an appropriate atomic transition, can lead to very strong asymmetries in the propagation of unpolarized light when the direction…

Quantum Physics · Physics 2009-11-07 G. S. Agarwal , Shubhrangshu Dasgupta

We present undergraduate-friendly instructions on how to produce light pulses propagating through warm Rubidium vapor with speeds less than 400 m/s, i.e., nearly a million times slower than c. We elucidate the role played by…

A plasmonic "molecule" consisting of a radiative element coupled with a sub-radiant (dark) element is theoretically investigated. The plasmonic "molecule" shows close resemblance to the electromagnetically induced transparency (EIT) in an…

Optics · Physics 2008-01-11 Shuang Zhang , Dentcho A Genov , Yuan Wang , Ming Liu , Xiang Zhang

We report a detailed investigation on the properties of correlation spectra for cold atoms under the condition of Electromagnetically Induced Transparency (EIT). We describe the transition in the system from correlation to anti-correlation…

Light propagation through an ensemble of ultra-cold Rydberg atoms in electromagnetically induced transparency (EIT) configuration is studied. In strongly interacting Rydberg EIT media, non-linear optical effects lead to a non-trivial…

Atomic Physics · Physics 2013-10-16 Martin Gärttner , Jörg Evers

Autler-Townes splitting (ATS) and electromagnetically-induced transparency (EIT) both yield transparency in an absorption profile, but only EIT yields strong transparency for a weak pump field due to Fano interference. Empirically…

Quantum Physics · Physics 2011-11-28 Petr M. Anisimov , Jonathan P. Dowling , Barry C. Sanders

Strong optical nonlinearities are key to a range of technologies, particularly in the generation of photonic quantum states. The strongest nonlinearity in hot atomic vapors originates from electromagnetically induced transparency (EIT),…

Quantum Physics · Physics 2025-03-18 Sutapa Ghosh , Alexey Gorlach , Chen Mechel , Maria V. Chekhova , Ido Kaminer , Gadi Eisenstein

We prove that it is possible to freeze a light pulse (i.e., to bring it to a full stop) or even to make its group velocity negative in a coherently driven Doppler broadened atomic medium via electromagnetically induced transparency (EIT).…

Quantum Physics · Physics 2007-05-23 Olga Kocharovskaya , Yuri Rostovtsev , Marlan O. Scully

We develop a generalized principle of EIT vector magnetometry based on high-contrast EIT-resonances and the symmetry of atom-light interaction in the linearly polarized bichromatic fields. Operation of such vector magnetometer on the D1…

Atomic Physics · Physics 2010-05-25 V. I. Yudin , A. V. Taichenachev , Y. I. Dudin , V. L. Velichansky , A. S. Zibrov , S. A. Zibrov

We have investigated electromagnetically induced transparency in the spectrum of selective reflection at the interface of Rb atom vapors and a dielectric nanocell window. A nanocell with atomic vapor column thicknesses ranging from 150 to…

Atomic Physics · Physics 2024-06-25 Armen Sargsyan , Anahit Gogyan , David Sarkisyan

Electromagnetically induced transparency in an optically thick, cold medium creates a unique system where pulse-propagation velocities may be orders of magnitude less than $c$ and optical nonlinearities become exceedingly large. As a…

Quantum Physics · Physics 2009-11-10 Danielle A. Braje , Vlatko Balic , G. Y. Yin , S. E. Harris

Near-field phase-shifting contact lithography is modeled to characterize electromagnetic absorption in a photoresist layer with one face in contact with a quartz binary phase-shift mask. The broadband ultraviolet illumination is represented…

Applied Physics · Physics 2019-10-09 Fei Wang , Katherine E. Weaver , Akhlesh Lakhtakia , Mark W. Horn

We discuss the optical heterodyne detection technique to study the absorption and dispersion of a probe beam propagating through a medium with a narrow resonance. The technique has been demonstrated for Rydberg Electro-magnetically induced…

Optics · Physics 2018-02-20 Arup Bhowmick , Sushree S. Sahoo , Ashok K Mohapatra

We report a novel experimental technique for the comparison of ionization processes in ultrafast laser pulses irrespective of pulse ellipticity. Multiple ionization of xenon by 50 fs 790 nm, linearly and circularly polarized laser pulses is…

Electromagnetically induced transparency (EIT) in metastable helium at room temperature is experimentally shown to exhibit light storage capabilities for intermediate values of the detuning between the coupling and probe beams and the…

Quantum Physics · Physics 2014-06-17 M. -A. Maynard , T. Labidi , M. Mukhtar , S. Kumar , R. Ghosh , F. Bretenaker , F. Goldfarb

The increased spectral resolution allowed by the use of extremely thin vapor cells has led to the observation of interesting behaviour of alkali transitions when placed in a magnetic field. Particularly, transitions obeying an apparent…

Atomic Physics · Physics 2022-04-06 Armen Sargsyan , Arevik Amiryan , Ara Tonoyan , Emmanuel Klinger , David Sarkisyan

We study the phenomenon of electromagnetically induced transparency and absorption (EITA) using a control laser with a Laguerre-Gaussian (LG) profile instead of the usual Gaussian profile, and observe resonances with width up to 20 times…

Optics · Physics 2012-09-04 Sapam Ranjita Chanu , Vasant Natarajan

Using multiband k*p theory we study the size and geometry dependence on the slow light properties of conical semiconductor quantum dots. We find the V-type scheme for electromagnetically induced transparency (EIT) to be most favorable, and…

Mesoscale and Nanoscale Physics · Physics 2010-02-11 D. Barettin , J. Houmark , B. Lassen , M. Willatzen , T. R. Nielsen , J. Mork , A. -P. Jauho