Rights statement: ©2012 American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Quasideterministic realization of a universal quantum gate in a single scattering process
AU - Ciccarello, F
AU - Browne, D E
AU - Kwek, L C
AU - Schomerus, Henning
AU - Zarcone, M
AU - Bose, S
N1 - ©2012 American Physical Society
PY - 2012/5/17
Y1 - 2012/5/17
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevA.85.050305
DO - 10.1103/PhysRevA.85.050305
M3 - Journal article
VL - 85
JO - Physical review a
JF - Physical review a
SN - 1050-2947
IS - 5
M1 - 050305
ER -