6533b7dbfe1ef96bd126f7c4
RESEARCH PRODUCT
Quasideterministic realization of a universal quantum gate in a single scattering process
Leong Chuan KwekSougato BoseFrancesco CiccarelloMichelangelo ZarconeDan E. BrowneHenning Schomerussubject
Quantum opticsPhysicsQuantum PhysicsPhotonCondensed Matter - Mesoscale and Nanoscale Physicsquantum gate qubit scattering photon waveguidesScatteringFOS: Physical sciencesQuantum entanglementAtomic and Molecular Physics and OpticsQuantum gateQubitQuantum mechanicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)Quantum Physics (quant-ph)Quantum information scienceQuantum computerdescription
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 CZ gate (universal for quantum computation) between them. This occurs quasi-deterministically in a single scattering event, hence with no need for any post-selection 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-17 | Physical Review A |