Back to Search Start Over

Noncyclic continuous Pancharatnam—Berry phase in dual-beam interference

Authors :
Aleksi Leinonen
Antti Hannonen
Henri Partanen
Janne Heikkinen
Tero Setälä
Ari T. Friberg
Tommi K. Hakala
Source :
Communications Physics, Vol 6, Iss 1, Pp 1-8 (2023)
Publication Year :
2023
Publisher :
Nature Portfolio, 2023.

Abstract

Abstract The geometric phase for classical electromagnetic light beams, in its original formulation as introduced by Pancharatnam, concerns fields experiencing cyclic, discrete in-phase polarization-state changes. A similar phase was later recognized by Berry to govern the behavior of adiabatic quantum systems, with consequent extensions to nonadiabatic and noncyclic evolutions of the quantum state. However, no optical counterpart for the noncyclic, adiabatic (continuous) evolution has been demonstrated. Here we employ a modified Young’s two-pinhole setup with controlled pinhole polarizations and intensities to generate on interference an arbitrary continuous spatial evolution of the polarization state, an optical analogue to the adiabatic case. The customized arrangement allows separating at any point the accumulated dynamical and geometric phases from the total phase, enabling a detailed study of the noncyclic Pancharatnam–Berry phase in a continuous transformation. Our theoretical and experimental results are in excellent agreement and consistent with the geodesic rule for noncyclic evolutions.

Details

Language :
English
ISSN :
23993650
Volume :
6
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Communications Physics
Publication Type :
Academic Journal
Accession number :
edsdoj.37eb0e63b6ae42de9b4792bb4fed8fbd
Document Type :
article
Full Text :
https://doi.org/10.1038/s42005-023-01249-2