Quantum Carry Research of Q1D – SE on Helium at Charged Substrate

Abstract

Known in nanoelectronics a solid-state quantum size systems motivate creating like systems using the surface electrons on liquid helium. The quantum carry of quasi-one-dimensional surface electrons (Q1D-SEs) over superfluid helium is considered here. Research is conducted based on an electron phase diagram in the gas phase under conditions far from electron quantum melting. A substrate is dense row of the light guide segments where the SEs channels are formed over helium in the fiber gaps between. The electrostatic model of substrate profile demonstrates modulation of potential in the electric field leading to possibility of the fiber top charge thereby improving the Q1D-SEs channels’ quality. The experiments carried out by a low-frequency electron transport method at the temperature from 1.5 K to 0.5 K and the concentrations of electrons were up to 10⁹cm⁻². The SE movement transverse to the channel satisfies quantization conditions in terms of both temperature and electron relaxation time in the system. According to the experiment, below a certain temperature, the SE conductivity is ladder-like. The differential of SE conductivity is peak-like corresponding qualitatively to an electron states density. The distance between peaks accords to the 1D energy spectrum in some approach. Possibility of applying the 1D-SEs quantized energy levels (vibration levels) as quantum bits for a quantum computer is considered.

Keywords

quantum well / quantum wire / superfluid helium / surface electron / quantum bit

Ethical Statement

This study does not contain any studies with human or animal subjects performed by any of the authors.

Conflicts of Interest

The authors declare that they have no conflicts of interest to this work.

Data Availability Statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Author Contribution Statement

Viktor A. Nikolaenko: Conceptualization, Methodology, Investigation, Resources, Writing – original draft, Writing – review & editing, Visualization. Sviatoslav S. Sokolov: Software, Validation, Formal analysis, Data curation, Writing – review & editing, Visualization, Supervision, Project administration.

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