688 citations · 1.6k across the 13 of their papers we have counts for
13 papers
Matchgate circuit representation of fermionic Gaussian states: optimal preparation, approximation, and classical simulation
Marc Langer, Raúl Morral-Yepes, Adam Gammon-Smith +2
Fermionic Gaussian states (FGSs) and the associated matchgate circuits play a central role in quantum information theory and condensed matter physics. Despite being possibly highly…
All pure fermionic non-Gaussian states are magic states for matchgate computations
Martin Hebenstreit, Richard Jozsa, Barbara Kraus +2
Magic states were introduced in the context of Clifford circuits as a resource that elevates classically simulatable computations to quantum universal capability, while maintaining…
Entanglement manipulation of multipartite pure states with finite rounds of classical communication
J. I. de Vicente, C. Spee, D. Sauerwein +1
We studied pure state transformations using local operations assisted by finitely many rounds of classical communication () in C. Spee, J.I. de Vicente, D. Sauer…
The maximally entangled set of 4-qubit states
C. Spee, J. I. de Vicente, B. Kraus
Entanglement is a resource to overcome the natural restriction of operations used for state manipulation to Local Operations assisted by Classical Communication (LOCC). Hence, a bi…
The maximally entangled set of multipartite quantum states
Julio I. de Vicente, Cornelia Spee, Barbara Kraus
Entanglement is a resource in quantum information theory when state manipulation is restricted to Local Operations assisted by Classical Communication (LOCC). It is therefore of pa…
Remote entanglement preparation
C. Spee, J. I. de Vicente, B. Kraus
We introduce a new multipartite communication scheme, with the aim to enable the senders to remotely and obliviously provide the receivers with an arbitrary amount of multipartite…
Complete set of operational measures for the characterization of 3-qubit entanglement
J. I. de Vicente, T. Carle, C. Streitberger +1
We characterize the entanglement contained in a pure three-qubit state via operational entanglement measures. To this end we derive a new decomposition for arbitrary 3-qubit states…
Local unitary equivalence and entanglement of multipartite pure states
B. Kraus
The necessary and sufficient conditions for the equivalence of arbitrary n-qubit pure quantum states under Local Unitary (LU) operations derived in [B. Kraus Phys. Rev. Lett. 104,…
Local unitary equivalence of multipartite pure states
B. Kraus
Necessary and sufficient conditions for the equivalence of arbitrary n-qubit pure quantum states under Local Unitary (LU) operations are derived. First, an easily computable standa…
Characterization of Distillable and Activable States using Entanglement Witnesses
B. Kraus, M. Lewenstein, J. I. Cirac
We introduce a formalism that connections entanglement witnesses and the distillation and activation properties of a state. We apply this formalism to two cases: First, we rederive…
Characterization of separable states and entanglement witnesses
M. Lewenstein, B. Kraus, P. Horodecki +1
We provide a canonical form of mixed states in bipartite quantum systems in terms of a convex combination of a separable state and a, so-called, edge state. We construct entangleme…
Optimization of entanglement witnesses
M. Lewenstein, B. Kraus, J. I. Cirac +1
An entanglement witness (EW) is an operator that allows to detect entangled states. We give necessary and sufficient conditions for such operators to be optimal, i.e. to detect ent…
Separability in 2xN composite quantum systems
B. Kraus, J. I. Cirac, S. Karnas +1
We analyze the separability properties of density operators supported on $\C^2\otimes \C^N$ whose partial transposes are positive operators. We show that if the rank of equals…