ELFT HÍRADÓ

[Janos Asboth <janos.asboth AT gmail.com>]

                      MEGHÍVÓ

    Wigner FK SZFI Kvantumoptika és Kvantuminformatika Csoport szeminárium
ára


Sandeep K Goyal
Post-Doc (Physics)
University of KwaZulu-Natal
Westville Campus, Westville, Durban

``Scalable implementation scheme for quantum walks using classical light''


Az előadás helye és ideje:
Wigner FK SZFI
Konkoly-Thege M. út 29-33., 1-es épület
Tanácsterem
2013. november 21. csütörtök, 13:00.

Minden érdeklődőt szeretettel várunk.
Asbóth János

p.s.

Abstract
========
Quantum walks are the quantum analog of the classical random walks. They
have been proved to be universal for quantum computation and quantum
algorithms. However, not many scalable experimental realization of quantum
walks have been reported so far. Here we present an implementation scheme
for quantum walk in the orbital angular momentum space of a laser beam. The
scheme makes use of a ring interferometer, containing a quarter-wave plate
and a q-plate. This setup enables one to perform an arbitrary number of
quantum walk steps. In addition, the classical nature of the implementation
scheme makes it possible to observe the quantum walk evolution in real
time. We use non-quantum entanglement of the laser beam's polarization with
its orbital angular momentum to implement the quantum walk.

Journal Ref: Phys. Rev. Lett. 110, 263602 (2013)
http://prl.aps.org/abstract/PRL/v110/i26/e263602