Quantum-Enhanced Clock Synchronization: It’s About Time

Prof. Paul G. Kwiat, John Bardeen Chair in Physics and Electrical Engineering, University of Illinois Urbana-Champaign

There are many applications requiring shared time-keeping, including synchronizing distributed quantum processors. Several protocols relying on entangled photon pairs or quantum interference have been proposed, and in some cases demonstrated. Here we’ll give an overview of some of these and try to highlight their potential advantages and disadvantages compared to classical methods.

Paul G. Kwiat is the Bardeen Chair in Physics at the University of Illinois Urbana-Champaign, and was the inaugural Director of the Illinois Quantum Information Science and Technology Center (IQUIST). A Fellow of the American Physical Society and the Optical Society of America, he has given invited talks at numerous national and international conferences, and has authored over 160 articles on various topics in quantum optics and quantum information, including several review articles. His research focuses on optical implementations of quantum information protocols, particularly using entangled—and hyperentangled—photons from parametric down-conversion. He received the Optical Society of America 2009 R. W. Wood Prize, as the primary inventor of the world’s first sources of polarization-entangled photons from down-conversion, which have been used for quantum cryptography, dense-coding, quantum teleportation, quantum metrology, and realizing optical quantum gates. He has also done pioneering work on all-optical quantum memories and quantum-enhanced sensing. Prof. Kwiat received his BS in Physics from MIT ('87) and his PhD in Physics from University of California at Berkeley (1993).

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