435 citations · 1.2k across the 13 of their papers we have counts for
4 papers · 1 filter
Principles of Quantum Optimization for Constrained Problems
Einar Gabbassov, Gurpahul Singh, Achim Kempf
Constrained combinatorial optimization underlies many industrial and technological decision problems. We develop a spectral theory that unifies many quantum optimization algorithms…
Separable ellipsoids around multipartite states
Robin Y. Wen, Gilles Parez, Liuke Lyu +2
We show that, in finite dimensions, around any -partite product state , there exists an ellipsoid of separable states centered around $ρ_{\…
Adiabatic Dynamics of Entanglement
Einar Gabbassov, Achim Kempf
We show that, during adiabatic evolution generated by a time-dependent Hamiltonian, any changes in entanglement can be attributed to a succession of avoided crossings in the Hamilt…
On the Implementation of Constraints through Projection Operators
A. Kempf, J. R. Klauder
Quantum constraints of the type Q ψ= 0 can be straightforwardly implemented in cases where Q is a self-adjoint operator for which zero is an eigenvalue. In that case, the physical…