【Seminar】"Quantum key distribution over an encoded repeater chain with sequential swapping"

Speaker

Javier Rey Dominguez, PhD School of Electronic and electrical engineering, University of Leeds

Title

"Quantum key distribution over an encoded repeater chain with sequential swapping"

Abstract

"Most current proposals for entanglement distribution networks assume a connection-oriented approach, where resources along a path may be reserved before the start of the session. This strategy, however, does not match the common practice in the existing infrastructure for the Internet, which relies on connectionless packet switching. In this seminar, I will discuss how a hop-by-hop teleportation can be used to perform entanglement distribution across a network without any prior resource reservation. Specifically, I focus on a scenario where a three-qubit repetition code is employed for error detection, and compare this to an uncorrected, but deterministic, quantum repeater chain. The results suggest that the usage of quantum error detection schemes will enable trust-free secret key distribution at distances of interest, improving the compatibility of early quantum networks with the underlying classical infrastructure."