Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.85.050305
Title: Quasideterministic realization of a universal quantum gate in a single scattering process
Authors: Ciccarello, F.
Browne, D.E.
Kwek, L.C. 
Schomerus, H.
Zarcone, M.
Bose, S.
Issue Date: 17-May-2012
Citation: Ciccarello, F., Browne, D.E., Kwek, L.C., Schomerus, H., Zarcone, M., Bose, S. (2012-05-17). Quasideterministic realization of a universal quantum gate in a single scattering process. Physical Review A - Atomic, Molecular, and Optical Physics 85 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.85.050305
Abstract: We show that a flying particle, such as an electron or a photon, scattering along a one-dimensional waveguide from a pair of static spin-12 centers, such as quantum dots, can implement a controlled-z gate (universal for quantum computation) between them. This occurs quasideterministically in a single scattering event, with no need for any postselection or iteration and without demanding the flying particle to bear any internal spin. We show that an easily matched hard-wall boundary condition along with the elastic nature of the process are key to such performances. © 2012 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/112511
ISSN: 10502947
DOI: 10.1103/PhysRevA.85.050305
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