scholarly journals Quantum Coherent Optical Properties of Probe and Control Fields in Electromagnetically Induced Transparency

2013 ◽  
Vol 03 (01) ◽  
pp. 43-48
Author(s):  
新韵 姜
Keyword(s):  
Optical Properties ◽  
Electromagnetically Induced Transparency ◽  
And Control ◽  
Induced Transparency

The Regulation and Control of Electromagnetically Induced Transparency and Absorption in an Optical-radio Two-photon Coupling Configuration

2017 ◽  
Vol 46 (6) ◽  
pp. 626001
Author(s):  
张玮峰 ZHANG Wei-feng ◽  
苑青 YUAN Qing ◽  
李晓莉 LI Xiao-li ◽  
尚雅轩 SHANG Ya-xuan ◽  
张连水 ZHANG Lian-shui
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Two Photon ◽  
And Control ◽  
Induced Transparency ◽  
Photon Coupling

Experimental Verification of Circuit Analog of Three- and Four-Level Electromagnetically Induced Transparency

2011 ◽  
Vol 415-417 ◽  
pp. 1340-1349 ◽  
Author(s):  
Xi Chen ◽  
Xia Min Leng ◽  
Jing Xin Li ◽  
Yi Tsen Yeh ◽  
Teh Chau Liau ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Electromagnetically Induced Transparency ◽  
External Control ◽  
Atomic Systems ◽  
Classical Counterpart ◽  
Atomic Vapors ◽  
Capacitor Coupling ◽  
Atom Interaction ◽  
And Control ◽  
Induced Transparency

Since a two-level resonant atomic system can be simulated by a simple circuit, three- and four-level electromagnetically induced transparency (EIT) that occur due to light-atom interaction can find its classical counterpart in circuit analog. As the optical response of an EIT atomic medium (including atomic vapors and semiconductor-quantum-dot dielectrics) can be controlled via tunable quantum interference induced by applied external control fields, in the scheme of circuit analog, such a controllable manipulation is achieved via capacitor coupling, where two loops are coupled by a capacitor that can represent the applied control fields in atomic EIT. Both numerical simulation and experimental demonstration of three- and four-level EIT were performed based on such a scenario of circuit analog. The classical “coherence” relevant to quantum interference among transitions pathways driven by both probe and control fields in EIT atomic systems has been manifested in the present circuit analog of EIT.

Electromagnetically induced transparency in a rectangular quantum dot on a single electron

2019 ◽  
Vol 17 (2) ◽  
pp. 131-144
Author(s):  
Vladan Pavlovic ◽  
Zeljko Laic ◽  
Ljiljana Stevanovic ◽  
Nikola Filipovic
Keyword(s):  
Quantum Dot ◽  
Electromagnetically Induced Transparency ◽  
Relaxation Mechanism ◽  
Single Electron ◽  
Cryogenic Temperatures ◽  
Matrix Elements ◽  
Probe Field ◽  
And Control ◽  
Induced Transparency ◽  
Dephasing Rate

In this paper, we investigated the realization of electromagnetically induced transparency (EIT) in a rectangular quantum dot (QD) with a single electron in the presence of probe and control laser fields. The lowest three levels of the confined electron that form ladder and V configuration were chosen. We discussed the dependence of density matrix elements for ladder configuration and for V configuration on detunings of the probe field for various values of quantum dot dimensions. This dependence is discussed for both cases, at cryogenic temperatures when spontaneous emission dominates the relaxation mechanism and at room or higher temperatures when dephasing rate cannot be neglected.

scholarly journals Controllable Optical Properties of Multiple Electromagnetically Induced Transparency in Gaseous Atomic Media

2019 ◽  
Vol 29 (1) ◽  
pp. 1 ◽  
Author(s):  
Bang Nguyen Huy ◽  
Doai Le Van ◽  
Khoa Dinh Xuan
Keyword(s):  
Optical Properties ◽  
Optical Communication ◽  
Optical Bistability ◽  
Quantum Information Processing ◽  
Electromagnetically Induced Transparency ◽  
Kerr Nonlinearity ◽  
Optical Signal ◽  
Point Of View ◽  
Experimental Point ◽  
Induced Transparency

The advent of electromagnetically induced transparency (EIT) offered a new coherent material with exotic and controllable optical properties. Although, studies on single-EIT are described in detail for single-EIT, however, extension from single- to multi- EIT is currently of current interest due to it gains advantages in multi-channel optical communication, waveguides for optical signal processing and multi-channel quantum information processing. In this work, we review recent research works concerning multi-EIT and some related applications, as controlling group velocity of light, giant Kerr nonlinearity, optical bistability. A special attention of the review also gives for analytical interpretations of EIT spectrum, its dispersion and related applications such as EIT enhanced Kerr nonlinearity and optical bistability to give physics insight. From experimental point of view, a latest development for measuring multi-EIT spectrum and its dispersion in hot medium is presented and compared to theoretical analytical representations.

scholarly journals Regression Methods for Ophthalmic Glucose Sensing Using Metamaterials

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Philipp Rapp ◽  
Martin Mesch ◽  
Harald Giessen ◽  
Cristina Tarín
Keyword(s):  
Optical Properties ◽  
Electromagnetically Induced Transparency ◽  
Glucose Sensing ◽  
Support Vector ◽  
Estimation Errors ◽  
Processing Scheme ◽  
Regression Methods ◽  
Novel Concept ◽  
Induced Transparency

We present a novel concept for in vivo sensing of glucose using metamaterials in combination with automatic learning systems. In detail, we use the plasmonic analogue of electromagnetically induced transparency (EIT) as sensor and evaluate the acquired data with support vector machines. The metamaterial can be integrated into a contact lens. This sensor changes its optical properties such as reflectivity upon the ambient glucose concentration, which allows for in situ measurements in the eye. We demonstrate that estimation errors below 2% at physiological concentrations are possible using simulations of the optical properties of the metamaterial in combination with an appropriate electrical circuitry and signal processing scheme. In the future, functionalization of our sensor with hydrogel will allow for a glucose-specific detection which is insensitive to other tear liquid substances providing both excellent selectivity and sensitivity.

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