Selective coherent destruction of tunneling in a quantum-dot array

Abstract

The coherent manipulation of quantum states is one of the main tasks required in quantum computation. In this paper we demonstrate that it is possible to control coherently the electronic position of a particle in a quantum-dot array. By tuning an external ac electric field we can selectively suppress the tunneling between dots, trapping the particle in a determined region of the array. The problem is treated non-perturbatively by a time-dependent Hamiltonian in the effective mass approximation and using Floquet theory. We find that the quasienergy spectrum exhibits crossings at certain field intensities that result in the selective suppression of tunneling.

4 pages, 5 figures, submitted to PRB Rapid Comm

References in corpus (4)

• Location of crossings in the Floquet spectrum of a driven two-level system
• Ac Stark Effects and Harmonic Generation in Periodic Potentials
• Non-perturbative electron dynamics in crossed fields
• Renormalization approach for quantum-dot structures under strong alternating fields

Cited by in corpus (20)

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• Transport properties of a boundary-driven one-dimensional gas of spinless fermions
• Coherent destruction of tunneling in a lattice array under selective in-phase modulations
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• Coherent perfect absorbers for transient, periodic or chaotic optical fields: time-reversed lasers beyond threshold
• Soft-pulse dynamical decoupling in a cavity
• AC-field-controlled localization-delocalization transition in one dimensional disordered system
• Pulse-pumped double quantum dot with spin-orbit coupling
• Coherent destruction of tunneling in a lattice array with controllable boundary
• Quasienergy spectrum and tunneling current in ac-driven triple quantum dot shuttles
• Phase-controlled localization and directed transport in a bipartite lattice
• Field-induced barrier transparency of Bloch waves in tight-binding lattices
• Dynamic localization in Glauber-Fock lattices
• Robust Dynamical Recurrences Based on Floquet Spectrum
• AC-Stark effect in a semi-spherical quantum dot
• Robust Diabatic Quantum Search by Landau-Zener-Stückelberg Oscillations
• Magnetic control of dipolaritons in quantum dots
• Resonant edge-site pumping of polaritonic Su-Schrieffer-Heeger lattices
• Edge Localized Schrödinger Cat States in Finite Lattices via Periodic Driving
• Cold Atoms in Driven Optical Lattices