title: A simple method for the preparation of pseudopure states in nuclear magnetic resonance quantum information processing.
abstract: The use of nuclear magnetic resonance (NMR) to carry out quantum information processing (QIP) often requires the preparation, transformation, and detection of pseudopure states. In our previous work, it was shown that the use of pairs of pseudopure states (POPS) as a basis for QIP is very convenient because of the simplicity in experimental execution. It is now further demonstrated that the product of the NMR spectra corresponding to two sets of POPS that share a common pseudopure state has the same peak frequencies as those of the common (single) pseudopure state. Examples of applying two different quantum logic gates to a 5-qubit system are given.
authors.affiliation: Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019-3051, USA.
authors.forename: B M
authors.initials: BM
authors.lastname: Fung
authors.forename: Vladimir L
authors.initials: VL
authors.lastname: Ermakov
mesh_terms: D000465:Algorithms; D002627:Chemistry, Physical / Q000379:methods*; D003201:Computers; D003627:Data Interpretation, Statistical; D001330:Electronic Data Processing; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008956:Models, Chemical; D015233:Models, Statistical; D009570:Nitriles / Q000737:chemistry; D011789:Quantum Theory; D012984:Software
chemical_list: C515691:2,4,5-trifluorobenzonitrile; D009570:Nitriles