119 citations · 119 across the 2 of their papers we have counts for
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Single-particle entanglement
M. Ali Can, Alexander Klyachko, Alexander Shumovsky
Using the approach to quantum entanglement based on the quantum fluctuations of observables, we show the existence of perfect entangled states of a single "spin-1" particle. We giv…
Quantum marginal problem and representations of the symmetric group
Alexander Klyachko
We discuss existence of mixed state of multicomponent system with given spectrum and given reduced density matrices. We give a complete solution of the problem in terms of linear i…
Angular Momentum of Photons Emitted by Atoms
M. A. Can, Ozgur Cakir, A. Horzela +3
It is shown that the spin and orbital angular momentum of electric dipole photons have the same operator structure and may differ from each other only by spatial dependence in the…
Entanglement and quantum fluctuations
Alexander A. Klyachko, Alexander S. Shumovsky
We discuss maximum entangled states of quantum systems in terms of quantum fluctuations of all essential measurements responsible for manifestation of entanglement. Namely, we cons…