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- 1 2 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.
Ciccarello, F., Browne, D., Kwek, L., Schomerus, H., Zarcone, M., & Bose, S. (2012). Quasideterministic realization of a universal quantum gate in a single scattering process. PHYSICAL REVIEW A, 85, 050305-1-050305-5.
Data di pubblicazione: | 2012 |
Titolo: | Quasideterministic realization of a universal quantum gate in a single scattering process |
Autori: | |
Citazione: | Ciccarello, F., Browne, D., Kwek, L., Schomerus, H., Zarcone, M., & Bose, S. (2012). Quasideterministic realization of a universal quantum gate in a single scattering process. PHYSICAL REVIEW A, 85, 050305-1-050305-5. |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.85.050305 |
Appare nelle tipologie: | 1.01 Articolo in rivista |
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