no code implementations • 22 May 2019 • Ramy Tannous, Zhangdong Ye, Jeongwan Jin, Katanya B. Kuntz, Norbert Lütkenhaus, Thomas Jennewein
We study a novel protocol for reference frame independent (RFI) quantum key distribution (QKD) using six states for Alice and four states for Bob, while previous RFI protocols require a six state analyzer for Bob.
Quantum Physics
no code implementations • 13 May 2011 • David Pitkänen, Xiongfeng Ma, Ricardo Wickert, Peter van Loock, Norbert Lütkenhaus
First we show that one can obtain asymptotically perfect heralding and unit success probability with growing resources.
Quantum Physics
no code implementations • 24 Jun 2015 • Corsin Pfister, Norbert Lütkenhaus, Stephanie Wehner, Patrick J. Coles
Here we show that this assumption is violated for iterative sifting, a sifting procedure that has been employed in some (but not all) of the recently suggested QKD protocols in order to increase their efficiency.
Quantum Physics
no code implementations • 7 Dec 2017 • Piotr K. Tysowski, Xinhua Ling, Norbert Lütkenhaus, Michele Mosca
A network layer provides key generation across a network of nodes connected by quantum links.
Cryptography and Security Networking and Internet Architecture Quantum Physics
no code implementations • 26 Jul 2018 • Jie Lin, Norbert Lütkenhaus
Variations of phase-matching measurement-device-independent quantum key distribution (PM-MDI QKD) protocols have been investigated before, but it was recently discovered that this type of protocol (under the name of twin-field QKD) can beat the linear scaling of the repeaterless bound on secret key rate capacity.
Quantum Physics
no code implementations • 14 Jan 2021 • Twesh Upadhyaya, Thomas van Himbeeck, Jie Lin, Norbert Lütkenhaus
We develop a method to connect the infinite-dimensional description of optical continuous-variable quantum key distribution (QKD) protocols to a finite-dimensional formulation.
Dimensionality Reduction Quantum Physics
1 code implementation • 16 Oct 2017 • Adam Winick, Norbert Lütkenhaus, Patrick J. Coles
In this work, we present a reliable, efficient, and tight numerical method for calculating key rates for finite-dimensional quantum key distribution (QKD) protocols.
Quantum Physics