Generation of Path-Encoded Greenberger-Horne-Zeilinger States

N. Bergamasco, M. Menotti, J. E. Sipe, M. Liscidini
2017 Physical Review Applied  
We study the generation of Greenberger-Horne-Zeilinger (GHZ) states of three path-encoded photons. Inspired by the seminal work of Bouwmeester et al. [1] on polarization-entangled GHZ states, we find a corresponding path representation for the photon states of an optical circuit, identify the elements required for the state generation, and propose a possible implementation of our strategy. Besides the practical advantage of employing an integrated system that can be fabricated with proven
more » ... raphic techniques, our example suggests that it is possible to enhance the generation efficiency by using microring resonators.
doi:10.1103/physrevapplied.8.054014 fatcat:wg5jdjg2rffizhtvbdcioit4v4