Experimental observation of the geometric phase in nonlinear frequency conversion

Aviv Karnieli*, Sivan Trajtenberg-Mills, Giuseppe Di Domenico, Ady Arie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The geometric phase is a common phenomenon in a variety of physical systems, with significant applications in optics. We report the first experimental demonstration of the adiabatic geometric phase in nonlinear frequency conversion, wherein the coupling between the signal and idler frequencies constitutes the intrinsic two-level dynamics of the system. We observe a variety of effects associated with the geometric phase, including the adiabatic broadening of bandwidth, asymmetric transmission for opposite propagation directions, conjugation of the phase for orthogonal eigenstates, and the nonreciprocity associated with the pump field bias. Our work paves the way towards all-optically controlled geometric phase elements for wavefront shaping, isolation, guiding, and quantum optical applications, harnessing spectral and spatial correlations.

Original languageEnglish
Pages (from-to)1401-1405
Number of pages5
Issue number11
StatePublished - 2019


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