518 citations · 2.8k across the 54 of their papers we have counts for
5 papers · 2 filters
Phase measurements with weak reference pulses
S. J. van Enk
Quantum state discrimination for two coherent states with opposite phases as measured relative to a reference pulse is analyzed as functions of the intensities of both the signal s…
Unambiguous State Discrimination of Coherent States with Linear Optics: Application to Quantum Cryptography
S. J. van Enk
We discuss several methods for unambiguous state discrimination of N symmetric coherent states using linear optics and photodetectors. One type of measurements is shown to be optim…
Entanglement of photons
S. J. van Enk
It is argued that the title of this paper represents a misconception. Contrary to widespread beliefs it is electromagnetic field modes that are ``systems'' and can be entangled, no…
Local vs. Joint Measurements for the Entanglement of Assistance
T. Laustsen, F. Verstraete, S. J. van Enk
We consider a variant of the entanglement of assistance, as independently introduced by D.P. DiVincenzo {\em et al.} ({\tt quant-ph/9803033}) and O. Cohen (Phys. Rev. Lett. {\bf 80…
Classical Rules in Quantum Games
S. J. van Enk, R. Pike
We consider two aspects of quantum game theory: the extent to which the quantum solution solves the original classical game, and to what extent the new solution can be obtained in…