title: Naimark-dilated PT-symmetric brachistochrone.
abstract: The quantum mechanical brachistochrone system with a PT-symmetric Hamiltonian is Naimark-dilated and reinterpreted as a subsystem of a Hermitian system in a higher-dimensional Hilbert space. This opens a way to a direct experimental implementation of the recently hypothesized PT-symmetric ultrafast brachistochrone regime of Bender et al. [Phys. Rev. Lett. 98, 040403 (2007)] in an entangled two-spin system.
authors.affiliation: Research Center Dresden-Rossendorf, POB 510119, D-01314 Dresden, Germany. u.guenther@fzd.de
authors.forename: Uwe
authors.initials: U
authors.lastname: Günther
authors.forename: Boris F
authors.initials: BF
authors.lastname: Samsonov