title: Projection of a quantum state on eigenstates of average Hamiltonian.
abstract: A scheme for projecting an arbitrary quantum state on eigenstates of average Hamiltonian is described. As an experimental example, projection on entangled Bell states, which are eigenstates of specially constructed average Hamiltonian, is demonstrated for a system of two dipolar-coupled nuclear spins. The results of a direct and time-reversed evolution are added to average out the coherences between different eigenstates and accomplish the projection.
authors.affiliation: Department of Chemistry, Kent State University, Kent, OH 44242-0001, USA. jaeseung.lee@nyu.edu
authors.forename: Jae-Seung
authors.initials: JS
authors.lastname: Lee
authors.forename: A K
authors.initials: AK
authors.lastname: Khitrin
mesh_terms: D000465:Algorithms; D002627:Chemistry, Physical / Q000706:statistics & numerical data*; D050866:Liquid Crystals; D009682:Magnetic Resonance Spectroscopy / Q000706:statistics & numerical data*; D008956:Models, Chemical; D011522:Protons; D011789:Quantum Theory
chemical_list: D011522:Protons