Journal of Shanghai University(Natural Science Edition) ›› 2020, Vol. 26 ›› Issue (1): 69-75.doi: 10.12066/j.issn.1007-2861.2192

• Research Articles • Previous Articles     Next Articles

Three-waveguide couplers designed by shortcut to adiabaticity

Zhiyong HAN, Jielong SHI, Zixuan LAN, Xi CHEN   

  1. College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2019-09-09 Online:2020-02-29 Published:2020-03-22

Abstract:

A shortcut-to-adiabaticity protocol is proposed to design short light directional couplers by combining adiabatic elimination and counter-diabatic driving for three-level systems. For more practical implementations, we consider unitary transformation to design the waveguide width and adjacent waveguide pitch. In our example, a three-waveguide coupler is simulated by beam propagation method. Compared with adiabatic couplers, the designed coupler is shorter by four times. This approach is applicable to quantum information processing and integrated optics.

Key words: waveguide, coupler, adiabatic elimination, shortcut to adiabaticity

CLC Number: