scholarly journals Dynamical symmetry and quantum information processing with electromagnetically induced transparency

2006 ◽  
Vol 355 (6) ◽  
pp. 437-446 ◽  
Author(s):  
Xiong-Jun Liu ◽  
Hui Jing ◽  
Xin Liu ◽  
Mo-Lin Ge
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing ◽  
Electromagnetically Induced Transparency ◽  
Dynamical Symmetry ◽  
Induced Transparency

scholarly journals Electromagnetically Induced Transparency in Media with Rydberg Excitons 2: Cross-Kerr Modulation

Entropy ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 160 ◽  
Author(s):  
David Ziemkiewicz ◽  
Sylwia Zielińska - Raczyńska
Keyword(s):  
Quantum Information ◽  
Solid State ◽  
Phase Shift ◽  
Cuprous Oxide ◽  
Quantum Information Processing ◽  
Electromagnetically Induced Transparency ◽  
Optimum Conditions ◽  
Third Order ◽  
All Optical ◽  
Induced Transparency

By mapping photons into the sample of cuprous oxide with Rydberg excitons, it is possible to obtain a significant optical phase shift due to third-order cross-Kerr nonlinearities realized under the conditions of electromagnetically induced transparency. The optimum conditions for observation of the phase shift over π in Rydberg excitons media are examined. A discussion of the application of the cross-phase modulations in the field of all-optical quantum information processing in solid-state systems is presented.

scholarly journals All-optical reversible single-photon isolation at room temperature

2021 ◽  
Vol 7 (12) ◽  
pp. eabe8924
Author(s):  
Ming-Xin Dong ◽  
Ke-Yu Xia ◽  
Wei-Hang Zhang ◽  
Yi-Chen Yu ◽  
Ying-Hao Ye ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Insertion Loss ◽  
High Speed ◽  
Room Temperature ◽  
Quantum Information Processing ◽  
Single Photon ◽  
Electromagnetically Induced Transparency ◽  
All Optical ◽  
On Chip

Nonreciprocal devices operating at the single-photon level are fundamental elements for quantum technologies. Because magneto-optical nonreciprocal devices are incompatible for magnetic-sensitive or on-chip quantum information processing, all-optical nonreciprocal isolation is highly desired, but its realization at the quantum level is yet to be accomplished at room temperature. Here, we propose and experimentally demonstrate two regimes, using electromagnetically induced transparency (EIT) or a Raman transition, for all-optical isolation with warm atoms. We achieve an isolation of 22.52 ± 0.10 dB and an insertion loss of about 1.95 dB for a genuine single photon, with bandwidth up to hundreds of megahertz. The Raman regime realized in the same experimental setup enables us to achieve high isolation and low insertion loss for coherent optical fields with reversed isolation direction. These realizations of single-photon isolation and coherent light isolation at room temperature are promising for simpler reconfiguration of high-speed classical and quantum information processing.

scholarly journals Coherent Optical Field Manipulation and Optical Information Processing Based on Electromagnetically-Induced Transparency Effect in Pr3+:Y2SiO5 Crystal

2018 ◽  
Vol 8 (7) ◽  
pp. 1179
Author(s):  
Jianji Liu ◽  
Zhixiang Li ◽  
Hongming Fan ◽  
Guoquan Zhang
Keyword(s):  
Information Processing ◽  
Quantum Information Processing ◽  
Electromagnetically Induced Transparency ◽  
Polarization State ◽  
Optical Signal ◽  
Holographic Grating ◽  
Light Fields ◽  
Atomic Coherence ◽  
Induced Transparency ◽  
Coherent Manipulation

We reviewed the recent progress in coherent manipulation on light fields based on the electromagnetically-induced transparency (EIT) effect in Pr3+-doped Y2SiO5 crystal. The results show that, on one hand, the atomic coherence grating, formed when the light pulse is stored in Pr3+:Y2SiO5 crystal under the EIT condition has similar properties to the traditional holographic grating. On the other hand, the atomic coherence grating has its own unique characteristics that are different from those of traditional holographic grating. The EIT-induced nonlinearity and atomic coherence gratings can be used to manipulate the amplitude, the phase and the polarization state of light fields; therefore, they are of important applications for optical signal processing, quantum information processing and imaging processing.

Quantum Information Processing

2001 ◽  
Author(s):  
David P. DiVincenzo ◽  
Charles H. Bennett
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing
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