32 citations · 95 across the 8 of their papers we have counts for
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quant-ph2019★ 32 cited
Evolution speed of open quantum dynamics
Dorje C Brody, Bradley Longstaff
The space of density matrices is embedded in a Euclidean space to deduce the dynamical equation satisfied by the state of an open quantum system. The Euclidean norm is used to obta…
quant-ph2019★ 27 cited
Non-adiabatic transitions through exceptional points in the band structure of a PT-symmetric lattice
Bradley Longstaff, Eva-Maria Graefe
Exceptional points, at which two or more eigenfunctions of a Hamiltonian coalesce, occur in non-Hermitian systems and lead to surprising physical effects. In particular, the behavi…