Year: 2011
Type: article
Abstract: For a symmetric bridge coupled to infinite leads, in the presence of a dipole-coupled external ac field with harmonic mixing, we solve the Schr\"odinger equation in the time domain using open boundary conditions as well as in the energy domain using Floquet scattering theory. As this potential breaks parity and generalized parity, we find a nonvanishing average current. We then optimize the relative amplitude ratio between the fundamental and the second harmonic, leading to a maximum in the pump current.
Source: Physical Review B
Authors: Niklas Rohling, Frank Grossmann
Institution: Technische Universität Dresden
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2076719695