130 citations · 226 across the 4 of their papers we have counts for
6 papers · 1 filter
Fading channel estimation for free-space continuous-variable secure quantum communication
László Ruppert, Christian Peuntinger, Bettina Heim +6
We investigate estimation of fluctuating channels and its effect on security of continuous-variable quantum key distribution. We propose a novel estimation scheme which is based on…
Stabilization of transmittance fluctuations caused by beam wandering in continuous-variable quantum communication over free-space atmospheric channels
Vladyslav C. Usenko, Christian Peuntinger, Bettina Heim +6
Transmittance fluctuations in turbulent atmospheric channels result in quadrature excess noise which limits applicability of continuous-variable quantum communication. Such fluctua…
Efficient Quantum Walk Circuits for Metropolis-Hastings Algorithm
Jessica Lemieux, Bettina Heim, David Poulin +2
We present a detailed circuit implementation of Szegedy's quantization of the Metropolis-Hastings walk. This quantum walk is usually defined with respect to an oracle. We find that…
Q#: Enabling scalable quantum computing and development with a high-level domain-specific language
Krysta M. Svore, Alan Geller, Matthias Troyer +7
Quantum computing exploits quantum phenomena such as superposition and entanglement to realize a form of parallelism that is not available to traditional computing. It offers the p…
Designing Adiabatic Quantum Optimization: A Case Study for the Traveling Salesman Problem
Bettina Heim, Ethan W. Brown, Dave Wecker +1
With progress in quantum technology more sophisticated quantum annealing devices are becoming available. While they offer new possibilities for solving optimization problems, their…
Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels
Vladyslav C. Usenko, Bettina Heim, Christian Peuntinger +4
Entanglement properties of Gaussian states of light as well as the security of continuous variable quantum key distribution with Gaussian states in free-space fading channels are s…