Seminar----Institute of Theoretical Physics，Chinese Academy of Sciences

Institute of Theoretical Physics
Chinese Academy of Sciences
Key Laboratory of Theoretical Physics
Seminar
Title 题目	Intra-city quantum communication via thermal microwave networks
Speaker 报告人	Dr. Ze-Liang Xiang
Affiliation 所在单位	Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, Austria
Date 日期	2:00pm, Dec 28th (Wed), 2016
Venue 地点	ITP NEW BUILDING 6420
Abstract 摘要	Communication over proven-secure quantum channels is potentially one of the most wide-ranging applications of currently developed quantum technologies. It is generally envisioned that in future quantum networks, separated nodes containing stationary solid-state or atomic qubits are connected via the exchange of optical photons over large distances. In this work we explore an intriguing alternative for quantum communication via all-microwave networks. To make this possible, we describe a general protocol for sending quantum states through thermal channels, even when the number of thermal photons in the channel is much larger than one. The protocol can be implemented with state-of-the-art superconducting circuits and enables the transfer of quantum states over distances of ~ 100 m via microwave transmission lines cooled to only T = 4K. This opens up completely new possibilities for quantum communication within and across buildings, and consequently, for the implementation of intra-city quantum networks based on microwave technology only.
Contact Person 联系人	Ying-Dan Wang