Quantum coherent switch utilizing commensurate nanoelectrode and charge density periodicities

Abstract

A quantum coherent switch having a substrate formed from a density wave (DW) material capable of having a periodic electron density modulation or spin density modulation, a dielectric layer formed onto a surface of the substrate that is orthogonal to an intrinsic wave vector of the DW material; and structure for applying an external spatially periodic electrostatic potential over the dielectric layer.

1 . A quantum coherent switch comprising:
 a substrate formed from a density wave (DW) material capable of having a periodic electron density modulation or spin density modulation;   a dielectric layer on a surface of the substrate and   means for applying an external spatially periodic electrostatic potential over the dielectric layer.   
     
     
         2 . The quantum coherent switch of  claim 1 , where the DW material is a spin density wave material. 
     
     
         3 . The quantum coherent switch of  claim 1 , where the means for applying an external electrostatic potential is an electrode structure applied to the dielectric layer. 
     
     
         4 . The quantum coherent switch of  claim 3 , where the electrode structure is pairs of interleaved positive and negative electrodes. 
     
     
         5 . The quantum coherent switch of  claim 1 , where the spatially periodic electrostatic potential has a periodicity that is an integral multiple of the periodic electron density modulation of the DW material.