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Phys Rev Lett. 2013 Nov 08;111(19):193603. doi: 10.1103/PhysRevLett.111.193603. Epub 2013 Nov 07.

Demonstration of high-order dispersion cancellation with an ultrahigh-efficiency sum-frequency correlator.

Physical review letters

Joseph M Lukens, Amir Dezfooliyan, Carsten Langrock, Martin M Fejer, Daniel E Leaird, Andrew M Weiner

Affiliations

  1. School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA.

PMID: 24266473 DOI: 10.1103/PhysRevLett.111.193603

Abstract

We demonstrate dispersion cancellation of entangled photons for arbitrary spectral orders, generalizing Franson cancellation typically considered in second order alone. Employing ultrafast coincidence detection based on sum-frequency generation in a periodically poled lithium niobate waveguide with a record-high pair conversion efficiency of 10(-5), we verify cancellation of dispersion up to fifth order. Cancellation of odd-order phase is experimentally shown to require identical signal and idler dispersion coefficients, in contrast to even-order phase, which cancels with opposite signs. These results are especially important for future work on ultrabroadband biphotons.

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