353 citations · 857 across the 21 of their papers we have counts for
23 papers
Separability rigidity of Gaussian states under positive domination
Evgeny Shchukin, Peter van Loock
We prove a separability rigidity theorem for finite-mode Gaussian states. Let be Gaussian and let be a fixed partition of the modes. If dominates a nonzero…
Revisiting Gaussian genuine entanglement witnesses with modern software
E. Shchukin, P. van Loock
Continuous-variable Gaussian entanglement is an attractive notion, both as a fundamental concept in quantum information theory, based on the well-established Gaussian formalism for…
Exact rate analysis for quantum repeaters with imperfect memories and entanglement swapping as soon as possible
Lars Kamin, Evgeny Shchukin, Frank Schmidt +1
We present an exact rate analysis for a secret key that can be shared among two parties employing a linear quantum repeater chain. One of our main motivations is to address the que…
Optimal entanglement swapping in quantum repeaters
Evgeny Shchukin, Peter van Loock
We formulate the problem of finding the optimal entanglement swapping scheme in a quantum repeater chain as a Markov decision process and present its solution for different repeate…
On the waiting time in quantum repeaters with probabilistic entanglement swapping
E. Shchukin, F. Schmidt, P. van Loock
The standard approach to realize a quantum repeater relies upon probabilistic but heralded entangled state manipulations and the storage of quantum states while waiting for success…
Recovering quantum properties of continuous-variable states in the presence of measurement errors
E. Shchukin, P. van Loock
We present two results which combined enable one to reliably detect multimode, multipartite entanglement in the presence of measurement errors. The first result leads to a method t…