Field-induced barrier transparency of Bloch waves in tight-binding lattices

Abstract

A rectangular potential barrier for a Bloch particle in a tight-binding lattice is shown to become fully transparent by the application of a strong ac field with appropriate amplitude and frequency. Such a curious phenomenon bears some connection with the field-induced barrier transparency effect known for freely-moving particles scattered by an ac-driven rectangular barrier; however, for a Bloch particle transparency is not related to a resonant tunnneling process across the cycle-averaged oscillating potential barrier, as for the freely-moving quantum particle. The phenomenon of field-induced transparency is specifically discussed here for photonic transport in waveguide arrays and demonstrated by full numerical simulations of the paraxial (Schrödinger) wave equation beyond the tight-binding approximation.

References in corpus (11)

• Driven quantum transport on the nanoscale
• Dynamical control of matter-wave tunneling in periodic potentials
• Coherent control of dressed matter waves
• Single Particle Tunneling in Strongly Driven Double Well Potentials
• Exploring dynamic localization with a Bose-Einstein condensate
• Visualization of Coherent Destruction of Tunneling in an Optical Double Well System
• Quantum control and entanglement using periodic driving fields
• Tuning the Mott transition in a Bose-Einstein condensate by multi-photon absorption
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• Observation of discrete gap solitons in binary waveguide arrays
• Dissipationless Directed Transport in Rocked Single-Band Quantum Dynamics

Cited by in corpus (5)

• Transparency at the interface between two isospectral crystals
• Fractional photon-assisted tunnelling of ultra-cold atoms in periodically shaken double-well lattices
• Klein tunneling of two correlated bosons
• Resonantly enhanced coherence by laser-assisted tunneling
• All-optical Realization of Quantum Ratchets