Quick Navigation

Overview Topics Abstract Importance Paper Tools References Reactions Discussion Publication

Topics

Spin Qubits Silicon Quantum Computing

Low percolation density and charge noise with holes in germanium

arXiv
Authors: M. Lodari, N. W. Hendrickx, W. I. L. Lawrie, T. -K. Hsiao, L. M. K. Vandersypen, A. Sammak, M. Veldhorst, G. Scappucci

Year

2020

Paper ID

22279

Status

Preprint

Abstract Read

~2 min

Abstract Words

110

Citations

N/A

Abstract

We engineer planar Ge/SiGe heterostructures for low disorder and quiet hole quantum dot operation by positioning the strained Ge channel 55 nm below the semiconductor/dielectric interface. In heterostructure field effect transistors, we measure a percolation density for two-dimensional hole transport of 2.1times1010 cm-2, indicative of a very low disorder potential landscape experienced by holes in the buried Ge channel. These Ge heterostructures support quiet operation of hole quantum dots and we measure charge noise levels that are below the detection limit sqrt{SE}=0.2 μeV/sqrt{Hz} at 1 Hz. These results establish planar Ge as a promising platform for scaled two-dimensional spin qubit arrays.

Why This Paper Matters

  • This paper contributes to the Spin Qubits & Silicon Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • We engineer planar Ge/SiGe heterostructures for low disorder and quiet hole quantum dot operation by positioning the strained Ge channel 55 nm below the...

Paper Tools

Become a member to use research tools

Sign in to open papers, visit source links, share, cite, compare, copy DOI links, request category corrections, and build your reading list.

Become a member Sign in
Show Paper arXiv Publisher Share Cite This Paper Copy URL Compare Copy DOI Add to Reading List Category Correction Request

References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.06328 [2] arXiv https://arxiv.org/abs/2007.06328 [3] Publisher https://arxiv.org/abs/2007.06328

Local Citation Graph (Related-Paper Links)

Current Paper #22279

External citation index: OpenAlex citation signal

Community Reactions

Quick sentiment from readers on this paper.

Score: 0
Likes: 0 Dislikes: 0

Sign in to react to this paper.

Discussion & Reviews (Moderated)

Average Rating: 0.0 / 5 (0 ratings)

No written reviews yet.