no code implementations • 6 Oct 2020 • Wojciech Kozlowski, Axel Dahlberg, Stephanie Wehner
In this paper we present a quantum network protocol designed to enable end-to-end quantum communication in the face of the new fundamental and technical challenges brought by quantum mechanics.
Networking and Internet Architecture Quantum Physics
1 code implementation • 4 May 2020 • Yuan Lee, Eric Bersin, Axel Dahlberg, Stephanie Wehner, Dirk Englund
Here, we address this with a quantum router architecture comprising many quantum memories connected in a photonic switchboard to broker entanglement flows across quantum networks.
Quantum Physics Applied Physics
no code implementations • 6 Sep 2019 • Wojciech Kozlowski, Stephanie Wehner
The vision of a quantum internet is to fundamentally enhance Internet technology by enabling quantum communication between any two points on Earth.
Networking and Internet Architecture Quantum Physics
2 code implementations • 23 Mar 2019 • Axel Dahlberg, Matthew Skrzypczyk, Tim Coopmans, Leon Wubben, Filip Rozpędek, Matteo Pompili, Arian Stolk, Przemysław Pawełczak, Robert Knegjens, Julio de Oliveira Filho, Ronald Hanson, Stephanie Wehner
We first observe that our protocol is robust even in a regime of exaggerated losses of classical control messages with only little impact on the performance of the system. We proceed to study the performance of our protocols for 169 distinct simulation scenarios, including tradeoffs between traditional performance metrics such as throughput and the quality of entanglement.
Quantum Physics
1 code implementation • 1 Aug 2018 • Le Phuc Thinh, Phillippe Faist, Jonas Helsen, David Elkouss, Stephanie Wehner
We also provide a software package---QPtomographer---implementing our estimator for the diamond norm and the worst-case entanglement fidelity.
Quantum Physics
1 code implementation • 14 May 2018 • Axel Dahlberg, Jonas Helsen, Stephanie Wehner
Here the runtime is O(poly(|V(G)|)), showing that more efficient algorithms can in principle be found even for states holding a large amount of entanglement, as long as the output state has constant size.
Quantum Physics Computational Complexity Data Structures and Algorithms Emerging Technologies Combinatorics
1 code implementation • 14 May 2018 • Axel Dahlberg, Stephanie Wehner
What's more, we provide a recipe to obtain the sequence of LC+LPM+CC operations which prepare the desired target state from the source state, and show how these operations can be applied in parallel to reach the target state in constant time.
Quantum Physics Computational Complexity Data Structures and Algorithms Emerging Technologies Combinatorics
2 code implementations • 21 Dec 2017 • Axel Dahlberg, Stephanie Wehner
SimulaQron is built to enable application development and explore software engineering practises for a quantum internet.
Quantum Physics Networking and Internet Architecture Software Engineering
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
1 code implementation • 12 Mar 2013 • Nicolas Brunner, Daniel Cavalcanti, Stefano Pironio, Valerio Scarani, Stephanie Wehner
In the last two decades, Bell's theorem has been a central theme of research from a variety of perspectives, mainly motivated by quantum information science, where the nonlocality of quantum theory underpins many of the advantages afforded by a quantum processing of information.
Quantum Physics
no code implementations • 8 Nov 2011 • Mario Berta, Omar Fawzi, Stephanie Wehner
Yet, when considering a physical randomness source, X is itself ultimately the result of a measurement on an underlying quantum system.
Quantum Physics
