Extremely slow propagation of a light pulse in an ultracold atomic vapor: A Raman scheme without electromagnetically induced transparency

2001 ◽  
Vol 64 (3) ◽  
Author(s):  
M. G. Payne ◽  
L. Deng
Keyword(s):  
Light Pulse ◽  
Electromagnetically Induced Transparency ◽  
Atomic Vapor ◽  
Induced Transparency ◽  
Slow Propagation

Controllable A-T Splitting and Spatial Splitting Inside a Cascade Three-Level Atomic System

2021 ◽  
Vol 16 (5) ◽  
pp. 786-790
Author(s):  
Yan Zhang ◽  
Yuanyuan Li ◽  
Minru Hao ◽  
Yunzhe Zhang
Keyword(s):  
Optical Communication ◽  
Atomic System ◽  
Electromagnetically Induced Transparency ◽  
Wave Mixing ◽  
Atomic Vapor ◽  
First Order ◽  
Spatial Signal Processing ◽  
Probe Transmission ◽  
Induced Transparency ◽  
Splitting Effect

We illustrate the experimental observations of Autler-Townes splitting and the spatial splitting in an electromagnetically induced transparency window in a atomic vapor system of D1 line. As the power of the dressing laser beam changes, we study first-order and secondary Autler-Townes splitting. The influences of these dressing beams, which lead to the larger spatial splitting of four-wave mixing and the shift of probe transmission signal with by changing frequency detuning. Studies on such controllable Autler-Townes splitting and spatial splitting effect can be very useful in applications of spatial signal processing and optical communication.

scholarly journals Optical π phase shift created with a single-photon pulse

2016 ◽  
Vol 2 (4) ◽  
pp. e1600036 ◽  
Author(s):  
Daniel Tiarks ◽  
Steffen Schmidt ◽  
Gerhard Rempe ◽  
Stephan Dürr
Keyword(s):  
Phase Shift ◽  
Light Pulse ◽  
Light Field ◽  
Quantum Information Processing ◽  
Single Photon ◽  
Electromagnetically Induced Transparency ◽  
Logic Gate ◽  
Quantum Logic Gate ◽  
Photon Pulse ◽  
Induced Transparency

A deterministic photon-photon quantum logic gate is a long-standing goal. Building such a gate becomes possible if a light pulse containing only one photon imprints a phase shift of π onto another light field. We experimentally demonstrate the generation of such a π phase shift with a single-photon pulse. A first light pulse containing less than one photon on average is stored in an atomic gas. Rydberg blockade combined with electromagnetically induced transparency creates a phase shift for a second light pulse, which propagates through the medium. We measure the π phase shift of the second pulse when we postselect the data upon the detection of a retrieved photon from the first pulse. This demonstrates a crucial step toward a photon-photon gate and offers a variety of applications in the field of quantum information processing.

scholarly journals Electromagnetically Induced Transparency in Media with Rydberg Excitons 1: Slow Light

Entropy ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 177 ◽  
Author(s):  
David Ziemkiewicz
Keyword(s):  
Light Pulse ◽  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Proper Choice ◽  
Group Index ◽  
Large Group ◽  
Slowing Down ◽  
Induced Transparency ◽  
Good Agreement

In this paper, we show that Electromagnetically Induced Transparency (EIT) can be realized in mediums with Rydberg excitons. With realistic, reliable parameters which show good agreement with optical and electro-optical experiments, as well as the proper choice of Rydberg exciton states in the Cu2O crystal, we indicate how the EIT can be performed. The calculations show that, due to a large group index, one can expect the slowing down of a light pulse by a factor of about 10 4 in this medium.

scholarly journals Decoherence of electromagnetically induced transparency in atomic vapor

2006 ◽  
Vol 31 (17) ◽  
pp. 2625 ◽  
Author(s):  
E. Figueroa ◽  
F. Vewinger ◽  
J. Appel ◽  
A. I. Lvovsky
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Atomic Vapor ◽  
Induced Transparency
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