Bosonic and Fermionic Discrete-Time Quantum Walk on Integrated Optics
Year: 2013
Authors: Sansoni L., De Nicola F., Sciarrino F., Mataloni P., Crespi A., Ramponi R., Osellame R.
Autors Affiliation: Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; CNR, INO, I-50125 Florence, Italy; Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy; CNR, IFN, I-20133 Milan, Italy.
Abstract: In recent years, quantum walks have been proposed as widely applicable in virtually every science related discipline. In fact, they have emerged as a useful tool in the development of quantum algorithms and have been proposed as promising resources for the simulation of physical quantum systems. Single-particle quantum walks have been experimentally demonstrated by different approaches, while only few realizations of 2-particle quantum walks have been given so far. More in general, the realization of quantum walks of many of particles travelling in a more complex network is still an open question. Here we investigate the behaviour of two entangled photons traversing a 6-step discrete quantum walk built on an array of 36 integrated waveguide beam splitters. By exploiting polarization entanglement of the particles we were able to simulate the bunching-antibunching behaviour of non interacting bosons and fermions. We have also characterized the possible distinguishability and decoherence effects arising in such a structure. This study is necessary in view of the realization of a quantum simulator based on an integrated optical array built on a large number of beam splitters.
Journal/Review: JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
Volume: 10 (7) Pages from: 1662 to: 1666
More Information: This work was supported by EU-Project CHISTERA-QUASAR, FIRB-Futuro in Ricerca HYTEQ and PRIN 2009.KeyWords: Quantum Walk; Quantum Information; Quantum Simulation; Integrated OpticsDOI: 10.1166/jctn.2013.3103Connecting to view paper tab on IsiWeb: Click here