  We numerically propose an all-dielectric hybrid metamaterial (MM) to realize
all-optical switch and logic gates in shortwave infrared (SWIR) band. Such MM
consists of one silicon rod and one Ge2Sb2Te5 (GST) rod pair. Utilizing the
transition from amorphous to crystalline state of GST, such MM can produce
electromagnetically induced transparency (EIT) analogue with active control.
Based on this, we realized all-optical switching at 1500 nm with a modulation
depth 84%. Besides, three different logic gates, NOT, NOR and OR, can also be
achieved in this device simultaneously. Thanks to the reversible and fast phase
transition process of GST, this device possesses reconfigurable ability as well
as fast response time, and has potential applications in future optical
networks.
