Ultra-bright biphoton emission from an atomic vapor based on Doppler-free four-wave-mixing and collective emission

2009/01/29 by Y. P. Huang, Huang, Y. P., M. G. Moore +1
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Optics (physics.optics) #Quantum Physics (quant-ph) #physics.atom-ph #physics.optics #quant-ph

paper · pdf · doi:10.48550/arxiv.0901.4789

arxiv created 2009/01/29 · arxiv updated 2009/12/01

Abstract

We propose a novel `butterfly' level scheme to generate highly correlated photon pairs from atomic vapors. With multi-photon Doppler-free pumping, background Rayleigh scattering is dipole-forbidden and collective emission is permitted in all directions. This results in usable pairs generated simultaneously in the full 4π solid angle. Collecting these pairs can produce photon pairs at a rate of ∼ 10¹² per second, given only moderate ensemble sizes of ∼ 10⁶ atoms.

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