Quasideterministic realization of a universal quantum gate in a single scattering process

Ciccarello, F and Browne, D E and Kwek, L C and Schomerus, Henning and Zarcone, M and Bose, S (2012) Quasideterministic realization of a universal quantum gate in a single scattering process. Physical review a, 85 (5). ISSN 1050-2947

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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-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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review a
Additional Information:
©2012 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
54396
Deposited By:
Deposited On:
22 May 2012 08:10
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Apr 2020 01:18