ZOOM SEMINAR
https://tau-ac-il.zoom.us/j/88530592735?pwd=aUZBU2ZWeFRpUVl4aUN3Wmx6ZGFQdz09
Meeting ID: 885 3059 2735
Passcode: TAUEESYS
(The talk will be given in English)
Speaker: Dr. Uzi Pereg
Institute for Communications Engineering in the Technical University of Munich (TUM) and
Munich Center for Quantum Science and Technology
Wednesday, January 26th, 2022
15:00 - 16:00
Communication with Unreliable Entanglement Assistance
Abstract
Quantum communication has seen rapid development in the last decade, in both practice and theory. Entanglement resources are instrumental ina wide variety of quantum network frameworks. In particular, entanglement assistance can increase transmission rates substantially. Unfortunately, entanglement is a fragile resource that is quickly degraded by de coherence effects. To generate entanglement for optical communication, the transmitter first prepares an entangled photon pair locally, and then transmits one of the photons to the receiver through an optical fiber or free space. Without feedback, the transmitter does not know whether the entangled photon has reached the receiver.
The present work introduces a new model of unreliable entanglement assistance, whereby the communication system operates whether entanglement assistance is present or not. While the sender is ignorant, the receiver knows whether the entanglement generation was successful. In the case of a failure,the receiver decodes less information. In this manner, the effective transmission rate is adapted according to the assistance status. Regularized formulas are derived for the classical and quantum capacity regions with unreliable entanglement assistance, characterizing the tradeoff between the unassisted rate and the excess rate that can be obtained from entanglement assistance.
Short Bio
Uzi Pereg is a post-doctoral researcher at the Institute for Communications Engineering in the Technical University of Munich (TUM), and at the Munich Center for Quantum Science and Technology. He works in the theory group of the German federal government projects Q.Link.X. (2020-2021) and QR.X. (2021-2022) for the design and analysis of quantum communication and repeater systems. He was awarded the Ph.D. degree at the Viterbi Faculty of Electrical and Computer Engineering, Technion - Israel Institute of Technology, Haifa, Israel, in 2019. Uzi received the B.Sc. (summa cum laude) degree in Electrical Engineering from Azrieli College of Engineering, Jerusalem, Israel, in 2011, and the M.Sc. degree from Technion, Haifa, Israel, in 2015. His research interests are in the areas of quantum communications, information theory and coding theory. Uzi is a recipient of the Pearl Award for outstanding research work in the field of communications, the KLA-Tencor Award for an excellent conference paper, the Viterbi Ph.D. Scholarship of the Technion, Viterbi Postdoc Fellowship for nurturing future faculty members, the Quantum Science and Technology Fellowship of the Israel Council for Higher Education, and the Seed Funding Grant of the Munich Center for Quantum Science and Technology (MCQST).
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