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Project Mission
To conduct quantum information related research to:
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Provide solutions for advanced quantum information science and technology to enhance US industrial competitiveness.
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Develop and exploit new calibration and metrology techniques to achieve standardization in the area of quantum information and communication.
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Provide an infrastructure for quantum communication metrology, testing, calibration, and technology development.
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R&D 100 Award (2007)


IET Finalist Award (2007)


DoC Silver (2008) and Bronze (2005) Medals

ITL Outstanding Authorship (2007)

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Most Resent Publications
Lijun Ma, S Nam, Hai Xu, B Baek, Tiejun Chang, O Slattery, A Mink and Xiao Tang, " 1310 nm differential-phase-shift QKD system using superconducting single-photon detectors ". New Journal of Physics, Vol. 11, April 2009.

Alan Mink, Joshua C Bienfang, Robert Carpenter, Lijun Ma, Barry Hershman, Alessandro Restelli and Xiao Tang, " Programmable instrumentation and gigahertz signaling for single-photon quantum communication systems ". New Journal of Physics, Vol. 11, April 2009.

Lijun Ma, Alan Mink and Xiao Tang, "High Speed Quantum Key Distribution over Optical Fiber Network System ", Journal of Research of the National Institute of Standards and Technology, Vol. 114, Number 3, Page 149, May- June 2009.

A. Mink, S. Frankel, and R. Perlner, " Quantum Key Distribution (QKD) and Commodity Security Protocols: Introduction and Integration ", International Journal of network security and its applications, Vol. 1, No. 2, July 2009.

Lijun Ma, Oliver Slattery, Tiejun Chang and Xiao Tang, " Non-degenerated sequential time-bin entanglement generation using periodically poled KTP waveguide ", Optics Express, Vol. 17 Issue 18, pp.15799-15807 (2009).

Lijun Ma, Oliver Slattery and Xiao Tang, " Experimental study of high sensitivity infrared spectrometer with waveguide-based up-conversion detector ", Optics Express Vol. 17, Issue 16, pp. 14395–14404 (2009).

Xiao Tang, Lijun Ma, Oliver Slattery, “Single photon detection and spectral measurement in near infrared region using up-conversion technology” invited talk, presented at LPHYS09, Barcelona, Spain, July 13-17, 2009.

Lijun Ma, Oliver Slattery, Tiejun Chang and Xiao Tang, “Sequential time-bin entanglement generation using periodically poled KTP waveguide”, CLEO/ IQEC (Optical Society of America, Washington, DC, 2009), JWA85.

Xiao Tang, Lijun Ma, Oliver Slattery, “Single photon detection and spectral measurement in near infrared region using up-conversion technology” invited talk, presented at LPHYS09, Barcelona, Spain, July 13-17, 2009.

Burm Baek, Lijun Ma, Alan Mink, Xiao Tang and Sae Woo Nam, " Detector performance in long-distance quantum key distribution using superconducting nanowire single-photon detectors ", Proc. SPIE, Vol. 7320, 73200D (2009).

Oliver Slattery, Alan Mink, and Xiao Tang, " Low noise up-conversion single photon detector and its applications in quantum information systems ", Proc. of SPIE Vol. 7465, 74650W, 2009.

Oliver Slattery, Lijun Ma and Xiao Tang, " Optimization of photon pair generation in dual-element PPKTP waveguide ", Proc. of SPIE Vol. 7465, 74650K, 2009.

Oliver Slattery, Lijun Ma and Xiao Tang, “High-Speed Coincidence Photon Pair Generation by Dual-Element PPKTP Waveguide over GHz repetition rate”, submitted to Frontier in Optics 2009 (the 93rd annual meeting of Optical Society of American, San Jose, October, 2009). WERB review approved.

All Publications.

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Xiao Tang

Dr. Xiao Tang, supervisory physicist, leads the Quantum Networks project in the Advanced Network Technologies Division (ANTD) in the Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST). He joined NIST's ITL in June 1998.

Currently, Xiao Tang concentrates on the research and development of quantum information and quantum key distribution networks. Prior to that, he was a group leader managing the research activities in the Information Storage and Integrated Systems (ISIS) group and became leader of the NIST quantum communication testbed hardware group in 2001. For his excellent research work he received NIST's Jacob Rabinow Applied Research Award in 2003; the Bronze Medal Award issued by US Department of Commerce in 2005.


Before joining NIST, Xiao Tang was a research associate professor in the Materials Science Research Center at Howard University, Washington DC. In the latter 1980's, he was a deputy director of Pohl Institute of Solid State Physics and an associate professor in the Department of Physics at Tongji University, Shanghai. In the early 1970's, he and his colleagues developed the first Chinese semiconductor laser, which was contineously operated at room temperature, in the Institute of Physics, Chinese Academy of Sciences in Beijing. He has published over 70 scientific research papers and many conference proceedings.

Xiao Tang can be contacted at xiao.tang@nist.gov, with further contact information available at www.antd.nist.gov/people.shtml#Tang.

The following are a selection of his representative papers:

" Hai Xu, Lijun Ma, Alan Mink, Barry Hershman, and Xiao Tang, "1310-nm quantum key distribution system with up-conversion pump wavelength at 1550 nm", Optics Express, Vol. 15, Issue 12, PP. 7248 (June 2007).

" Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Hai Xu, Barry Hershman, Joshua C. Bienfang, David Su, Ronald F. Boisvert, Charles W. Clark, Carl J. Williams, "Experimental study of high speed polarization-coding quantum key distribution with sifted-key rates over Mbit/s", Optics Express, Vol. 14, Issue 6, pp. 2062-2070 (March 2006).

" Xiao Tang, LiJun Ma, Alan Mink, Tassos Nakassis, Hai Xu, Barry Hershman, Joshua C. Bienfang, David Su, Ronald F. Boisvert, Charles W. Clark, and Carl J. Williams, "Quantum Key Distribution System Operating at Sifted-key Rate Over 4 Mbits/s", Proceedings of SPIE, Vol. 6244, page 62440P-1-62440P-8 (2006).

" J. Bienfang, A. Gross, A. Mink, B. Hershman, A. Nakassis, X. Tang, R. Lu, D. Su, Charles Clark, Carl Williams, E. Hagley, Jesse Wen, "Quantum key distribution with 1.25 Gbps clock synchronization", Optics Express. Vol. 12 (9), 2011 (2004).

" Xiao Tang and Jian Zheng, "High Precision Measurement of Reflectance for Films Under Substrates", Optical Engineering, Volume 41, Issue 12, pp. 3283-3287, (2002).

" Xiao Tang, Fazla Hossain, Kobchat Wongchotigul and Michael G. Spencer, "Near Band-edge Transition in Aluminum Nitride Thin Films Grown by Metal Organic Chemical Vapor Deposition", Appl. Phys. Lett., 72 (12), (1998).

" Xiao Tang, Yifang Yuan, K. Wongchotigul and Michael G. Spencer. "Dispersion Properties of Alminum Nitride as Measured by an Optical Waveguide Technique." Appl. Phys. Lett., 70 (24), June 16, (1997).

" X. Tang, Kenneth G. Irvine, Dongping Zhang, and Michael G. Spencer, "Linear Electro-optic effect in cubic silicon carbide", Appl. Phys. Lett., 59, 1938 (1991).

" Zheng Haoping, Tang Xiao, Zhao Minzhou, Shao Zhongsu, Xu Dong and Jiang Minghua, "Brillouin scattering study on the single crystal of L-Arginine Phosphate (LAP)", Z. Phys. B-Condensed Matter, 69, 289-293 (1987).

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