599 citations · 4k across the 83 of their papers we have counts for
6 papers · 2 filters
Stabilization of quantum information by combined dynamical decoupling and detected-jump error correction
Daniel Geberth, Oliver Kern, Gernot Alber +1
Two possible applications of random decoupling are discussed. Whereas so far decoupling methods have been considered merely for quantum memories, here it is demonstrated that rando…
The meeting problem in the quantum random walk
M. Stefanak, T. Kiss, I. Jex +1
We study the motion of two non-interacting quantum particles performing a random walk on a line and analyze the probability that the two particles are detected at a particular posi…
Complex chaos in conditional qubit dynamics and purification protocols
T. Kiss, I. Jex, G. Alber +1
Selection of an ensemble of equally prepared quantum systems, based on measurements on it, is a basic step in quantum state purification. For an ensemble of single qubits, iterativ…
Recurrence and Pólya number of quantum walks
M. Stefanak, I. Jex, T. Kiss
We analyze the recurrence probability (Pólya number) for d-dimensional unbiased quantum walks. A sufficient condition for a quantum walk to be recurrent is derived. As a by-product…
Network implementation of covariant two-qubit quantum operations
J. Novotny, G. Alber, I. Jex
A six-qubit quantum network consisting of conditional unitary gates is presented which is capable of implementing a large class of covariant two-qubit quantum operations. Optimal c…
Scattering quantum random-walk search with errors
A. Gabris, T. Kiss, I. Jex
We analyze the realization of a quantum-walk search algorithm in a passive, linear optical network. The specific model enables us to consider the effect of realistic sources of noi…