Shortcuts to adiabaticity (STA) are fast routes to the final results of slow, adiabatic changes
of the controlling parameters of a system. The shortcuts are designed by a set of analytical …

Optical phased arrays are a promising beam-steering technology for ultra-small solid-state
lidar and free-space communication systems. Long-range, high-performance arrays require …

Adiabatic processes are ubiquitous in physics and engineering. A drawback of such
processes is that they tend to be slow, either in time–for atomic systems, for example–or in …

A short and broadband silicon asymmetric Y-junction two-mode (de) multiplexer is proposed
and simulated. An adiabaticity parameter suitable for high index-contrast silicon waveguides …

We propose an ultrashort and broadband silicon mode-conversion polarization splitter-
rotator (PSR) consisting of a taper and a Y-junction both designed by the fast quasiadiabatic …

In recent years, the concept of shortcuts to adiabaticity (STA), originally developed for
speeding up slow adiabatic state evolution in quantum systems, has found numerous …

Compact silicon mode (de) multiplexers based on asymmetrical directional couplers are
designed using shortcuts to adiabaticity. The coupling coefficient and propagation constants …

We propose short and robust directional couplers designed by shortcuts to adiabaticity,
based on Lewis-Riesenfeld invariant theory. The design of directional couplers is discussed …

We propose a fast quasiadiabatic approach to the design of optical waveguide devices. This
approach distributes the system adiabaticity homogeneously over the device length, thus …

Shortcuts to adiabaticity are alternative fast processes which reproduce the same final state
as the adiabatic process in a finite or even shorter time, which have been extended from …