Resource Efficient Source of Multiphoton Polarization Entanglement

E. Megidish, T. Shacham, A. Halevy, L. Dovrat, H. S. Eisenberg
2012 Physical Review Letters  
Current photon entangling schemes require resources that grow with the photon number. We present a new approach that generates quantum entanglement between many photons, using only a single source of entangled photon pairs. The different spatial modes, one for each photon as required by other schemes, are replaced by different time slots of only two spatial modes. States of any number of photons are generated with the same setup, solving the scalability problem caused by the previous need for
more » ... tra resources. Consequently, entangled photon states of larger numbers than before are practically realizable.
doi:10.1103/physrevlett.109.080504 pmid:23002730 fatcat:ebus5pllqjb4djk4u4ngkyw7mq