Advanced

Ballistic One-Dimensional InAs Nanowire Cross-Junction Interconnects

Gooth, Johannes; Borg, Mattias LU ; Schmid, Heinz; Schaller, Vanessa; Wirths, Stephan; Moselund, Kirsten; Luisier, Mathieu; Karg, Siegfried and Riel, Heike (2017) In Nano Letters 17(4). p.2596-2602
Abstract

Coherent interconnection of quantum bits remains an ongoing challenge in quantum information technology. Envisioned hardware to achieve this goal is based on semiconductor nanowire (NW) circuits, comprising individual NW devices that are linked through ballistic interconnects. However, maintaining the sensitive ballistic conduction and confinement conditions across NW intersections is a nontrivial problem. Here, we go beyond the characterization of a single NW device and demonstrate ballistic one-dimensional (1D) quantum transport in InAs NW cross-junctions, monolithically integrated on Si. Characteristic 1D conductance plateaus are resolved in field-effect measurements across up to four NW-junctions in series. The 1D ballistic... (More)

Coherent interconnection of quantum bits remains an ongoing challenge in quantum information technology. Envisioned hardware to achieve this goal is based on semiconductor nanowire (NW) circuits, comprising individual NW devices that are linked through ballistic interconnects. However, maintaining the sensitive ballistic conduction and confinement conditions across NW intersections is a nontrivial problem. Here, we go beyond the characterization of a single NW device and demonstrate ballistic one-dimensional (1D) quantum transport in InAs NW cross-junctions, monolithically integrated on Si. Characteristic 1D conductance plateaus are resolved in field-effect measurements across up to four NW-junctions in series. The 1D ballistic transport and sub-band splitting is preserved for both crossing-directions. We show that the 1D modes of a single injection terminal can be distributed into multiple NW branches. We believe that NW cross-junctions are well-suited as cross-directional communication links for the reliable transfer of quantum information as required for quantum computational systems.

(Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ballistic transport, conductance quantization, Nanowire, quantum network
in
Nano Letters
volume
17
issue
4
pages
7 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85017447405
ISSN
1530-6984
DOI
10.1021/acs.nanolett.7b00400
language
English
LU publication?
no
id
18601f43-03ca-4919-97c8-12b31adb34c5
date added to LUP
2018-04-11 11:49:17
date last changed
2018-05-29 09:53:16
@article{18601f43-03ca-4919-97c8-12b31adb34c5,
  abstract     = {<p>Coherent interconnection of quantum bits remains an ongoing challenge in quantum information technology. Envisioned hardware to achieve this goal is based on semiconductor nanowire (NW) circuits, comprising individual NW devices that are linked through ballistic interconnects. However, maintaining the sensitive ballistic conduction and confinement conditions across NW intersections is a nontrivial problem. Here, we go beyond the characterization of a single NW device and demonstrate ballistic one-dimensional (1D) quantum transport in InAs NW cross-junctions, monolithically integrated on Si. Characteristic 1D conductance plateaus are resolved in field-effect measurements across up to four NW-junctions in series. The 1D ballistic transport and sub-band splitting is preserved for both crossing-directions. We show that the 1D modes of a single injection terminal can be distributed into multiple NW branches. We believe that NW cross-junctions are well-suited as cross-directional communication links for the reliable transfer of quantum information as required for quantum computational systems.</p>},
  author       = {Gooth, Johannes and Borg, Mattias and Schmid, Heinz and Schaller, Vanessa and Wirths, Stephan and Moselund, Kirsten and Luisier, Mathieu and Karg, Siegfried and Riel, Heike},
  issn         = {1530-6984},
  keyword      = {ballistic transport,conductance quantization,Nanowire,quantum network},
  language     = {eng},
  month        = {04},
  number       = {4},
  pages        = {2596--2602},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Ballistic One-Dimensional InAs Nanowire Cross-Junction Interconnects},
  url          = {http://dx.doi.org/10.1021/acs.nanolett.7b00400},
  volume       = {17},
  year         = {2017},
}