检索结果-南通市图书馆

Generation of Intensity Squeezing in Laser Diodes by Weak External Cavity Feedback

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 1996年第10期13卷 734-736页

作者： ZHANG Tian-cai HOU Zhan-jia WANG Jun-min XIE Chang-de peng kun-chi Institute of Opto-Electronics Shanxi UniversityTaiyuan 030006

We report the generation of intensity squeezing in a single-mode laser diode by weak external cavity feedback. The measurable squeezing of the output beam is 4.7%, corrected to 8.9% for the actual squeezing. This prov... 详细信息

关键词： measurable squeezing corrected

Tunable Single-Frequency Intracavity Frequency-Doubled Ti:Sapphire Laser around 461 nm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2011年第12期28卷 146-148页

作者： LI Feng-Qin SHI Zhu LI Yong-Min peng kun-chi State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi UniversityTaiyuan 030006

We demonstrate a tunable continuous-wave single frequency intracavity frequency-doubled Ti:sapphire *** highest output power of 280 mW at 461.62 nm is obtained by employing a type-I phase-matched BIBO crystal and the peak-to-peak fluctuation of the power is less than±1%within three *** frequency stability is better than±2.22 MHz over 10 min when the laser is locked to a confocal Fabry–Perot cavity.A three-plate birefringent filter allows for the tunable range from 457 nm to 467 nm,which covers the absorption line of the strontium atoms(460.86 nm).

关键词： tunable intracavity Fabry

Ultrastable Fiber-Based Time-Domain Balanced Homodyne Detector for Quantum Communication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2012年第12期29卷 78-81页

作者： WANG Xu-Yang BAI Zeng-Liang DU peng-Yan LI Yong-Min peng kun-chi State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006

We present an ultrastable fiber-based time-domain balanced homodyne detector which can be used for precise characterization of pulsed quantum light fields.A variable optical attenuator based on bending the fiber is utilized to compensate for the different quantum efficiencies of the photodiodes precisely,and a common mode rejection ratio of above 76 dB is *** detector has a gain of 3.2μV per photon and a signal-to-noise ratio above 20 *** pulses with repetition rates up to 2 MHz can be measured with a detection efficiency of 66%.The stability of the detector is analyzed via an Allan variance measurement and the detector exhibits superior stability which enables a 100-s window for measurement without calibration.

关键词： quantum stability precise

Four-State Modulation Continuous Variable Quantum Key Distribution over a 30-km Fiber and Analysis of Excess Noise

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2013年第1期30卷 21-23页

作者： WANG Xu-Yang BAI Zeng-Liang WANG Shao-Feng LI Yong-Min peng kun-chi State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006

We report a fiber-based four-state discrete modulation continuous variable quantum key distribution system based on homodyne detection.A secret key rate of 1 kbit/s is achieved at a transmission distance of 30.2 *** factors that result in the excess noises of the quantum key distribution system are *** first is the relative phase dithering between the signal and local fields,and the second is the local field leakage into the signal field due to the scattering process that depolarizes the local *** is found that the latter has a significant impact on the excess noise,which is the main limiting factor to the long-distance secure quantum *** protocols are also given to decrease the excess noise effectively.

关键词： field. quantum excess

Generation of Tunable Amplitude-Squeezed Light by Injection Locking of a Laser Diode

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

chinese Physics Letters 2000年第6期17卷 422-424页

作者： WANG Jun-Min HE Ling-Xiang ZHANG Tian-Cai XIE Chang-De peng kun-chi Institute of Opto-electronics Shanxi UniversityTaiyuan 030006

Tunable amplitude squeezing around the D_(2)line of cesium has been experimentally accomplished at room temperature in a quantum-well laser diode with light injection from a single-mode distributed Bragg-Reflector laser *** the master laser frequency is tuned,amplitude squeezing of the output light from the slave laser can be maintained at about 0.9dB throughout a tunabIe range of~l.7 GHz around the cesium D_(2)line.

关键词： Tunable laser diode

Experimental Demonstration of Electromagnetic Induced Transparency and Dispersion Effects in Cs Atom Vapour

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2001年第12期18卷 1586-1588页

作者： ZHANG Jun-Xiang DONG Rui-Fang CHANG Hong XIE Chang-De peng kun-chi XIAO Min The Key Laboratory of Quantum Optics of Ministry of Education and Institute of Opto-Electronics Shanxi UniversityTaiyuan 030006 Department of Physics University of ArkansasFayettevilleArkansas 72701USA

The effects of the electromagnetically induced transparency and dispersion of a A-type three-level atomic system are experimentally measured with a vapour cell of Cs atoms. The steep dispersion at low absorption is ob... 详细信息

关键词： curve dispersion Dispersion

Continuous Variable Entanglement Distribution for Long-Distance QuantumCommunication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2013年第6期30卷 13-16页

作者： ZHAO Jun-Jun GUO Xiao-Min WANG Xu-Yang WANG Ning LI Yong-Min peng kun-chi State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006

We develop a frequency-tunable two-color continuous variable entangled state and demonstrate the entanglement distribution over a telecom single mode *** beam of the entangled state(795 nm)can be continuously tuned over a range of 2.4 GHz and the hyperfine transitions of a rubidium D1 line are measured based on saturated absorption *** other beam(1560 nm)is injected into a 5-km single mode fiber to distribute the entanglement,and the entanglement evolution between the transmitted beam and its entangled counterpart is *** system presented here will find potential applications in long-distance quantum information processing.

关键词： spectroscopy. beam saturated