scholarly journals QUANTUM STORAGE AND CLONING OF LIGHT STATES IN EIT-LIKE MEDIUM

2006 ◽  
Vol 20 (11n13) ◽  
pp. 1593-1605 ◽  
Author(s):  
A. P. ALODJANTS ◽  
S. M. ARAKELIAN
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Atomic Ensemble ◽  
Einstein Condensation ◽  
Experimental Realization ◽  
Molecular Systems ◽  
Physical Conditions ◽  
Quantum Optical ◽  
Bose Einstein ◽  
Induced Transparency ◽  
First Time

In the paper we consider a new approach for storage and cloning of quantum information by three level atomic (molecular) systems in the presence of the electromagnetically induced transparency (EIT) effect. For that, the various schemes of transformation into the bright and dark polaritons for quantum states of optical field in the medium are proposed. Physical conditions of realization of quantum nondemolition (QND) storage of quantum optical state are formulated for the first time. We have shown that the best storage and cloning of can be achieved with the atomic ensemble in the Bose-Einstein condensation state. We discuss stimulated Raman two-color photoassociation for experimental realization of the schemes under consideration.

scholarly journals A weakly-interacting many-body system of Rydberg polaritons based on electromagnetically induced transparency

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Bongjune Kim ◽  
Ko-Tang Chen ◽  
Shih-Si Hsiao ◽  
Sheng-Yang Wang ◽  
Kai-Bo Li ◽  
...  
Keyword(s):  
Collision Cross Section ◽  
Electromagnetically Induced Transparency ◽  
Principal Quantum Number ◽  
Dipole Interaction ◽  
Einstein Condensation ◽  
Body System ◽  
Many Body ◽  
Interaction Regime ◽  
Bose Einstein ◽  
Induced Transparency

AbstractThe combination of Rydberg atoms and electromagnetically induced transparency (EIT) has been extensively studied in the strong-interaction regime. Here we proposed utilizing an EIT medium with a high optical depth (OD) and a Rydberg state of low principal quantum number to create a many-body system of Rydberg polaritons in the weak-interaction regime. The phase shift and attenuation induced by the dipole–dipole interaction (DDI) were still significant, and can be viewed as the consequences of elastic and inelastic collisions among Rydberg polaritons. We further observed that the width of the transverse momentum distribution of Rydberg polaritons at the exit of the system became notably smaller as compared with that at the entrance. The observation demonstrates the cooling effect in this system. The μs-long interaction time due to the high-OD EIT medium plus the μm2-size collision cross section due to the DDI suggests a feasible platform of polariton Bose–Einstein condensation.

Electromagnetically Induced Transparency in 87Rb Bose-Einstein Condensate

2017 ◽  
Vol 23 (3) ◽  
pp. 246-253
Author(s):  
陈良超 CHEN Liang-chao ◽  
杨广玉 YANG Guang-yu ◽  
孟增明 MENG Zeng-ming ◽  
黄良辉 HUANG Liang-hui ◽  
王鹏军 WANG Peng-jun
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein ◽  
Induced Transparency

Experimental Realization of an On-Chip All-Optical Analogue to Electromagnetically Induced Transparency

2006 ◽  
Vol 96 (12) ◽  
Author(s):  
Qianfan Xu ◽  
Sunil Sandhu ◽  
Michelle L. Povinelli ◽  
Jagat Shakya ◽  
Shanhui Fan ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Experimental Realization ◽  
All Optical ◽  
On Chip ◽  
Induced Transparency

TOWARDS EXPERIMENTAL REALIZATION OF THE SUPERCONDUCTOR–SEMICONDUCTOR INTERFACE IN THE YBCO–Si COMPOSITE SYSTEM

2000 ◽  
Vol 07 (01n02) ◽  
pp. 103-108
Author(s):  
A. ABO-ARAIS
Keyword(s):  
Composite System ◽  
Orthorhombic Phase ◽  
Superconducting Phase ◽  
Einstein Condensation ◽  
X Ray Diffraction ◽  
Semiconductor Interface ◽  
Experimental Realization ◽  
X Ray ◽  
Bose Einstein ◽  
Si Addition

To study the solid state and chemical interactions between Y1Ba2Cu3O7-δ and Si, resistivity and X-ray diffraction measurements were carried out on Y1Ba2Cu3O7-δ–Si x compounds with 0<x>0.12. The transition temperature Tc was found to be slightly decreased by Si addition up to x=0.08 and sharply decreased at x=0.10. The superconducting phase incompletely disappeared at x=0.12. The resistivity was increased by Si doping and its behavior was changed from a metallic to an insulator and semiconductor-like nature. All peaks of the orthorhombic phase were still present by increasing the Si ratio and new phases were produced which were indexed as mainly barium silicates. At x=0.12 the orthorhombic phase was greatly decreased and the barium silicate phases were very clearly destroying the superconducting phase. The obtained results are discussed according to the superconductor–semiconductor composite model and with the idea of Bose–Einstein condensation. The superconductor–semiconductor composite as the YBCO–Si system seems to be a key to unlocking some secrets about the mechanisms of high Tc superconductors.

scholarly journals Electromagnetically Induced Transparency in the Five-level Scheme of Cold \(^{85}\)Rb Atomic Vapour

2013 ◽  
Vol 23 (2) ◽  
pp. 163
Author(s):  
Bui Thi Hong Hai ◽  
Le Van Doai ◽  
Doan Hoai Son ◽  
Dinh Xuan Khoa ◽  
Nguyen Huy Bang ◽  
...  
Keyword(s):  
Analytical Approach ◽  
Electromagnetically Induced Transparency ◽  
Weak Field ◽  
Semiclassical Theory ◽  
Field Limit ◽  
Probe Light ◽  
Weak Field Limit ◽  
Induced Transparency ◽  
First Time ◽  
Theoretical Results

In the framework of the semiclassical theory, we develop an analytical approach on electromagnetically induced transparency (EIT) in the medium consists of five-level cascade scheme of cold 85Rb atoms. In the weak field limit of the probe light, an analytical representation of EIT spectra is derived for the first time. Signatures of EIT spectra, including transparency efficiency, have been investigated. We see a tremendous agreement between our theoretical results and experimental observations.

Electromagnetically induced transparency in a Bose–Einstein condensate

2002 ◽  
Vol 211 (1-6) ◽  
pp. 159-165 ◽  
Author(s):  
V. Ahufinger ◽  
R. Corbalán ◽  
F. Cataliotti ◽  
S. Burger ◽  
F. Minardi ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein ◽  
Induced Transparency
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