Eur. Phys. J. B 21, 283-287 (2001)
https://doi.org/10.1007/s100510170203

Quantum switch based on coupled waveguides

¹ Department of Mathematics, Auckland University, Auckland, private bag 92019, New Zealand
² Department of Higher Mathematics, Leningrad Institute of Fine Mechanics and Optics, 14, Sablinskaya, St. Petersburg 197101, Russia

Corresponding author: ^a popov@mail.ifmo.ru

Received: 13 August 2000
Revised: 19 February 2001
Published online: 15 May 2001

Abstract

The problem of construction of quantum multiplexer is discussed. A possible construction based on resonance transport properties of quantum waveguides coupled through small windows is considered. Small apertures play double role of "connecting channels" and "resonant elements". Transmission coefficients for the system are determined. The workability of the device as a quantum switch to one of three (or to two of three) channels is discussed. Control parameters for the switch are electron energy and bias voltage.