67 citations · 164 across the 13 of their papers we have counts for
4 papers · 1 filter
Maximally entangled mixed states for qubit-qutrit systems
Paulo E. M. F. Mendonca, Marcelo A. Marchiolli, Samuel R. Hedemann
We consider the problems of maximizing the entanglement negativity of X-form qubit-qutrit density matrices with (i) a fixed spectrum and (ii) a fixed purity. In the first case, the…
Ent: A Multipartite Entanglement Measure, and Parameterization of Entangled States
Samuel R. Hedemann
A multipartite entanglement measure called the ent is presented and shown to be an entanglement monotone, with the special property of automatic normalization. Necessary and suffic…
Noise-Resistant Quantum Teleportation, Ansibles, and the No-Projector Theorem
Samuel R. Hedemann
A method is presented for achieving entanglement-free teleportation of a quantum state subject to any quantum noise. We apply this as a light-speed noise-resistant communicator, bu…
Distinguishing Coherent States from Phase-Mixed Coherent States with Only a Variable Beam Splitter and Single-Photon Detector, In Principle
Samuel R. Hedemann
It is generally assumed that on-off detectors with single-photon sensitivity cannot distinguish coherent states from phase-mixed coherent states without some form of quadrature-bas…