We are excited to announce the Colloquium by Professor Jian-Wei Pan from University of Science and Technology of China.
Title: Quantum entanglement and beyond
Abstract: Quantum information science and technology are emerging, and fascinating technologies are being formed by coherently manipulating individual quantum systems, which enables secure quantum cryptography (quantum communication), super-fast quantum computing (quantum computation), and improving measurement precision (quantum metrology) to beat classical limits.
For fundamental aspect, one is led to the conception of quantum entanglement. The appeared ‘spooky action at a distance’ phenomena referred by Einstein, is often explained by seemingly reasonable assumptions of “local realism.” The inequalities proposed by John Bell and others provide immediate tests for correctness of quantum mechanics. Many efforts are addressing loophole-free tests of Bell inequalities, which tries to close various loopholes, in which some of loopholes are still needed to be addressed including freedom of choice loophole, the collapse locality loophole. Well, the final test is on-going, many developed ground-breaking technologies for coherent manipulation of quantum systems offers elegant and feasible solutions for satisfying increasing needs of computational power and information security.
Based on state-of-the-art fiber technology and rich fiber resources, we have managed to achieve prevailing quantum communication with realistic devices in real-life situation. This constitutes demonstrations by developing decoy state scheme over 100km firer, extending its employment in the metropolitan area network, as well as maintaining Measurement Device Independent QKD (MDI-QKD) over 400 km. At the meantime, we are also developing practically useful quantum repeaters that combine entanglement swapping, entanglement purification, efficient and long-lived quantum memory for the ultra-long distance quantum communication. Another complementing route is to attain global quantum communication based on satellite. We have spent the past decade in performing systematic ground tests for satellite-based quantum communications. Our efforts finally ensure a successful launch of the Micius satellite. Three major scientific missions have been finished, which includes achieving QKD between satellite and ground station at thousand kilometer scale, achieving satellite-based entanglement distribution between two ground stations separated by a distance of 1200 km, achieving quantum teleportation from ground to satellite over 1400 km. Moreover, using Micius satellite as a trustful relay, the intercontinental QKD between Beijing and Vienna over a distance of 7600 km has also been realized.
Future Prospects include building a global quantum communication infrastructure with satellite and fiber networks, enormous spatial resolution and global precise timing information sharing networks with applications for the global quantum communication network, ultra-precise optical clocks in outer space to detect gravitational wave signal with lower frequency.
Bio: Jian-Wei Pan, born on 11 March 1970, received his Bachelor (1992) and Master (1995) in Physics from the University of Science and Technology of China, Hefei, and his PhD (1999) from the University of Vienna. He is currently a Professor of Physics of the University of Science and Technology of China, an Academician of Chinese Academy of Sciences (CAS), and a Fellow of the World Academy of Sciences (TWAS). He serves as the Director of the CAS Center for Excellence in Quantum Information and Quantum Physics, and the Chief Scientist for the Quantum Science Satellite Project. Jian-Wei Pan’s research fields focus on quantum foundations, quantum optics and quantum information. He has authored more than 400 articles which have attracted more than 64000 citations (Google scholar). Pan has won the Fresnel Prize from European Physical Society, Quantum Communications Award, First Prize of National Prize for Natural Sciences of China, Future Science Prize in Physical Sciences, Willis E. Lamb Award for Laser Science and Quantum Optics, Newcomb Cleveland Prize from American Association for the Advancement of Science, R. W. Wood Prize from Optical Society of America, Micius Quantum Prize and Zeiss Research Award, and was selected by Nature as “people of the year” in 2017 who “took quantum communication to space and back.”
The colloquium will be held online on
Friday, Nov 10, 9pm US Eastern
Friday, Nov 10, 6pm US Pacific
Saturday, Nov 11, 10am in China
To register, see here: Google Form or Wenjuanxing. Zoom link information will be sent to registrants a day before the talk. This online talk is open to all, but OCPA membership is encouraged. If you are not a member, please sign up for a new membership. A free one-year membership is offered through 12/31/2024.
Professor Jian-Wei Pan's talk was successfully held on November 10, 2023. Please click the link https://youtu.be/YSwHqBWnnPQ to watch the recording.