A method to realize effective magnetic fields for photons in square lattices of coupled optical waveguides or resonators is suggested, which is inspired by an optical analogue of photon-assisted tunneling of atom optics. It is shown that an artificial magnetic field can be achieved by application of an index gradient and periodic lumped phase shifts or modulation of the propagation constants/resonances, without the need to modulate the coupling strength.
© 2013 Optical Society of America
Original Manuscript: June 26, 2013
Revised Manuscript: August 15, 2013
Manuscript Accepted: August 16, 2013
Published: September 9, 2013
Stefano Longhi, "Effective magnetic fields for photons in waveguide and coupled resonator lattices," Opt. Lett. 38, 3570-3573 (2013)