Lu Chao-Yang;Pan Jian-Wei

Nature Photonics

2014

We realized stable synchronized femtosecond laser by coupling two 1.3W modelocking Ti:sapphire lasers with Kerr media, an ultra-long tolerance of length mismatch as 10mm and timing jitter of sub-fs were demonstrated. © 2005 Optical Society of America.

Tian Jinrong;Wei Zhiyi;Wang Peng;Han Hainian;Wang Zhaohua;Zhang Jie;Yang Tao;Pan Jianwei

Optics Infobase Conference Papers

2005

Lu He;Chen Luo-Kan;Liu Chang;Xu Ping;Yao Xing-Can;Li Li;Liu Nai-Le;Zhao Bo;Chen Yu-Ao;Pan Jian-Wei

Nature Photonics

2014

We investigate temperature-dependent resonance fluorescence spectra obtained from a single self-assembled quantum dot. A decrease of the Mollow triplet sideband splitting is observed with increasing temperature, an effect we attribute to a phonon-induced renormalization of the driven dot Rabi frequency. We also present first evidence for a nonperturbative regime of phonon coupling, in which the expected linear increase in sideband linewidth as a function of temperature is canceled by the corresponding reduction in Rabi frequency. These results indicate that dephasing in semiconductor quantum dots may be less sensitive to changes in temperature than expected from a standard weak-coupling analysis of phonon effects. © 2014 American Physical Society.

Wei Yu-Jia;He Yu;He Yu-Ming;Lu Chao-Yang;Pan Jian-Wei;Schneider Christian;Kamp Martin;H\u00f6fling Sven;McCutcheon Dara P.S.;Nazir Ahsan

Physical Review Letters

2014

© 2014 IEEE. The main type of obstacles of practical applications of quantum key distribution (QKD) network are various attacks on detection. Measurement-device-independent QKD (MDIQKD) protocol is immune to all these attacks, and thus, a strong candidate for network security. Recently, several proof-of-principle demonstrations of MDIQKD have been performed. Although novel, those experiments are implemented in the laboratory with secure key rates less than 0.1 b/s. Besides, they need manual calibration frequently to maintain the system performance. These aspects render these demonstrations far from practicability. Thus, justification is extremely crucial for practical deployment into the field environment. Here, by developing an automatic feedback MDIQKD system operated at a high clock rate, we perform a field test via deployed fiber network of 30 km total length achieving a 16.9 b/s secure key rate. The result lays the foundation for a global quantum network, which can shield from all the detection-side attacks.

Tang Yan-Lin;Yin Hua-Lei;Liu Yang;Jiang Xiao;Wang Jian;Guan Jian-Yu;Yang Dong-Xu;Liang Hao;Zhou Nan;Chen Teng-Yun;Zhang Qiang;Pan Jian-Wei;Zhang Zhen;Ma Xiongfeng;Chen Si-Jing;Zhang Wei-Jun;Zhang Lu;You Li-Xing;Wang Zhen

IEEE Journal on Selected Topics in Quantum Electronics

2015

Tang Yan-Lin;Yin Hua-Lei;Chen Si-Jing;Liu Yang;Zhang Wei-Jun;Jiang Xiao;Zhang Lu;Wang Jian;You Li-Xing;Guan Jian-Yu;Yang Dong-Xu;Wang Zhen;Liang Hao;Zhang Zhen;Zhou Nan;Ma Xiongfeng;Chen Teng-Yun;Zhang Qiang;Pan Jian-Wei

Physical Review Letters

2015

© 2016 Author(s). We present a real-time and fully integrated quantum random number generator (QRNG) by measuring laser phase fluctuations. The QRNG scheme based on laser phase fluctuations is featured for its capability of generating ultra-high-speed random numbers. However, the speed bottleneck of a practical QRNG lies on the limited speed of randomness extraction. To close the gap between the fast randomness generation and the slow post-processing, we propose a pipeline extraction algorithm based on Toeplitz matrix hashing and implement it in a high-speed field-programmable gate array. Further, all the QRNG components are integrated into a module, including a compact and actively stabilized interferometer, high-speed data acquisition, and real-time data post-processing and transmission. The final generation rate of the QRNG module with real-time extraction can reach 3.2 Gbps.

Zhang Xiao-Guang;Nie You-Qi;Liang Hao;Zhang Jun;Pan Jian-Wei;Zhou Hongyi;Ma Xiongfeng

Review of Scientific Instruments

2016

© 2016, Springer-Verlag Berlin Heidelberg. We report on a narrow-linewidth cooling of ⁶ Li atoms using the 2 S 1 / 2 → 3 P 3 / 2 transition in the ultraviolet (UV) wavelength regime. By combining the traditional red magneto-optical trap (MOT) at 671 nm and the UV MOT at 323 nm, we obtain a cold sample of 1.3 × 10 ⁹ atoms with a temperature of 58 μ K. Furthermore, we demonstrate a high efficiency magnetic transport for ⁶ Li atoms with the help of the UV MOT. Finally, we obtain 8.1 × 10 ⁸ atoms with a temperature of 296 μ K at a magnetic gradient of 198 G/cm in the science chamber with a good vacuum environment and large optical access.

Chen Hao-Ze;Yao Xing-Can;Wu Yu-Ping;Liu Xiang-Pei;Wang Xiao-Qiong;Chen Yu-Ao;Pan Jian-Wei

Applied Physics B Lasers and Optics

2016

© 2017 Optical Society of America. Coherently manipulating a number of entangled qubits is the key task of quantum information processing. In this paper, we report on the experimental realization of a ten-photon Greenberger–Horne–Zeilinger state using thin BiB 3 O6 crystals. The observed fidelity is 0.606 ± 0.029, demonstrating a genuine entanglement with a standard deviation of 3.6σ. This result is further verified using p-value calculation, obtaining an upper bound of 3.7 × 10 ⁻³ under an assumed hypothesis test. Our experiment paves a new way to efficiently engineer BiB 3 O 6 crystal-based multi-photon entanglement systems, which provides a promising platform for investigating advanced optical quantum information processing tasks such as boson sampling, quantum error correction, and quantum-enhanced measurement.

Chen Luo-Kan;Li Zheng-Da;Yao Xing-Can;Huang Miao;Li Wei;Lu He;Jiang Xiao;Peng Cheng-Zhi;Li Li;Liu Nai-Le;Lu Chao-Yang;Chen Yu-Ao;Pan Jian-Wei;Yuan Xiao;Ma Xiongfeng;Zhang Yan-Bao

Optica

2017

© 2016 IEEE. We present the efficient generation of coherent single photons based on quantum dots in micropillars. We utilize a scalable lithography scheme leading to quantum dot-micropillar devices with 74% extraction efficiency. Via pulsed strict resonant pumping, we show an indistinguishability of consecutively emitted photons up to 98.5%.

Unsleber Sebastian;He Yu-Ming;Maier Sebastian;Gerhardt Stefan;Schneider Christian;Hofling Sven;Ding Xing;Hei Yu;Duan Z. C.;Chen M. C.;Lu Chao-Yang;Pan Jian-Wei;Gregersen Niels

2016 IEEE Photonics Conference IPC 2016

2017