We are a research group at the University of Arizona. Our research is focused on experimental aspects of quantum information processing and quantum materials for use in quantum communication, quantum computing, and quantum sensing systems.
Our group has multiple postdoc openings available in the areas of experimental quantum optics, quantum information processing, and integrated photonics. Please feel free to contact Dr. Zhang via email for more information. 


September 24, 2018 Dr. Zhang's team received funds from General Dynamics to study entanglement-enhanced sensing. 

July 31, 2018 Dr. Zhang will lead a National Science Foundation (NSF) Major Research Instrumentation (MRI) program to build up a quantum network testbed at the University of Arizona for interdisciplinary quantum information research and engineering (INQUIRE). Our INQUIRE team includes Profs. J. Barton and M. Romanowski of UA's BIO5 Institute, N. Peyghambarian of Optical Sciences, and I. Djordjevic of Electrical and Computer Engineering.

The INQUIRE facility and quantum-network testbed will be comprised of entangled-photon sources and single-photon detectors connecting five major nodes over multiple buildings and disciplines including Electrical and Computer Engineering, Materials Science and Engineering, Optical Sciences, Physics, and Biomedical Engineering. The infrastructure of the INQUIRE facility and the quantum-network testbed is illustrated in the figures below.



July 1, 2018 Our team receives the Arizona Board of Regents' Innovation Fund (RIF) grant to work with Arizona State University and Northern Arizona University on the development of integrated quantum photonics platform. The collaborators for this project include Profs. N. Peyghambarian, O. Monti, N. Armstrong, and S. Guha from UA, S. Goodnick and D. Ferry from ASU, and S. Hurst from NEU.

June 30, 2018 Fengyan Yang joins our group as an undergraduate summer intern student. Fengyan is sophomore in Nankai University and will develop a framework for the simulation of nonlinear optics in integrated photonic devices. Welcome Fengyan!

June 7, 2018 Our team receives the RDI - Industry Engagement and interdisciplinary Link Student Award to collaborate with the industry on quantum technology prototype development.

June 6, 2018 Dr. Zhang was invited to give a 3-hour Tutorial on quantum communications at the Biennial Symposium on Communications in Toronto, Canada. The objective of the Tutorial is to introduce the fundamentals of quantum communications to the classical communication community for fostering interdisciplinary research.

May 21, 2018 Lucas Stolberg joins our group as an undergraduate researcher. Lucas was a student in Dr. Zhang's Numerical Methods for Materials Science and Engineering course in Fall 2017 and is currently working on building quantum-limited receivers for quantum communications and sensing applications. Welcome Lucas!

May 10, 2018 Dr. Zhang was selected by the students to receive Award for Excellence at the Student Interface, cited as "Most Supportive Junior Faculty," from the College of Engineering, the University of Arizona.

Apr 16, 2018 Our group is seeking a motivated postdoc trained in experimental quantum optics, preferably with experience in nonlinear optics in fibers or in integrated photonics, to work on quantum information processing using entangled photons. Please feel free to contact Dr. Zhang via email for more information. 

Apr 11, 2018 Our paper "Experimental quantum key distribution at 1.3 gigabit-per-second secret-key rate over a 10-dB-loss channel" was published in Quantum Science and Technology. This paper reports the first demonstration of quantum key distribution at a rate in excess of 1 Gbit/s.

Oct 1, 2017 Dr. Zhang was jointly appointed in the College of Optical Sciences.

Aug 14, 2017 Dr. Zhang joined the Department of Materials Science and Engineering at the University of Arizona as an Assistant Professor.

Jun 17, 2017 Dr. Zhang is seeking motivated graduate students and postdocs to work on experimental quantum information, nanophotonics, and quantum materials in my group at the University of Arizona. We will work in a team comprising both experimentalists and theorists. Please feel free to contact Dr. Zhang via email for more information. 

Jun 17, 2017 Dr. Zhang will be joining the University of Arizona as a junior faculty member this Fall. 

Jan 27, 2017 Our paper "Optimum mixed-state discrimination for noisy entanglement-enhanced sensing" is now published in Phys Rev. Lett.

Jan 27, 2017 Our paper "Floodlight quantum key distribution: Demonstrating a framework for high-rate secure communication" is now published in Phys. Rev. A. This paper experimentally demonstrates a new quantum-communication paradigm that yields un unprecedented communication rate of 55 Mbit/s over 10 dB channel loss. Such a rate represents a 50-fold improvement over the previous record rate of ~1 Mbit/s over the same channel loss.

Jan 3, 2017 Our paper "Optimum mixed-state discrimination for noisy entanglement-enhanced sensing" (arXiv:1609.01968) has been accepted for publication in Phys. Rev. Lett. This paper introduces the optimum receiver for robust quantum-enhanced sensing, opening the door to ultrasensitive imaging, high-precision characterization, and noninvasive detection at their ultimate limits.


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