An optical analog of Zitterbewegung (ZB), i.e., of the trembling motion of Dirac electrons caused by the interference between positive and negative energy states, is proposed for spatial beam propagation in binary waveguide arrays. In this optical system the ZB is simply observable as a quiver spatial oscillatory motion of the beam center of mass around its mean trajectory.
© 2010 Optical Society of America
Original Manuscript: October 26, 2009
Revised Manuscript: December 3, 2009
Manuscript Accepted: December 6, 2009
Published: January 15, 2010
S. Longhi, "Photonic analog of Zitterbewegung in binary waveguide arrays," Opt. Lett. 35, 235-237 (2010)