skip to main content

Title: Cavity-photon-switched coherent transient transport in a double quantum waveguide

We study a cavity-photon-switched coherent electron transport in a symmetric double quantum waveguide. The waveguide system is weakly connected to two electron reservoirs, but strongly coupled to a single quantized photon cavity mode. A coupling window is placed between the waveguides to allow electron interference or inter-waveguide transport. The transient electron transport in the system is investigated using a quantum master equation. We present a cavity-photon tunable semiconductor quantum waveguide implementation of an inverter quantum gate, in which the output of the waveguide system may be selected via the selection of an appropriate photon number or “photon frequency” of the cavity. In addition, the importance of the photon polarization in the cavity, that is, either parallel or perpendicular to the direction of electron propagation in the waveguide system is demonstrated.
Authors:
;  [1] ;  [2] ;  [3]
  1. Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik (Iceland)
  2. Department of Mechanical Engineering, National United University, 1, Lienda, 36003 Miaoli, Taiwan (China)
  3. School of Science and Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik (Iceland)
Publication Date:
OSTI Identifier:
22402796
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; IMPLEMENTATION; INTERFERENCE; INVERTERS; PHOTONS; POLARIZATION; SEMICONDUCTOR MATERIALS; SYMMETRY; WAVEGUIDES