Template-Assisted Scalable Nanowire Networks
(2018) In Nano Letters 18(4). p.2666-2671- Abstract
Topological qubits based on Majorana Fermions have the potential to revolutionize the emerging field of quantum computing by making information processing significantly more robust to decoherence. Nanowires are a promising medium for hosting these kinds of qubits, though branched nanowires are needed to perform qubit manipulations. Here we report a gold-free templated growth of III-V nanowires by molecular beam epitaxy using an approach that enables patternable and highly regular branched nanowire arrays on a far greater scale than what has been reported thus far. Our approach relies on the lattice-mismatched growth of InAs on top of defect-free GaAs nanomembranes yielding laterally oriented, low-defect InAs and InGaAs nanowires whose... (More)
Topological qubits based on Majorana Fermions have the potential to revolutionize the emerging field of quantum computing by making information processing significantly more robust to decoherence. Nanowires are a promising medium for hosting these kinds of qubits, though branched nanowires are needed to perform qubit manipulations. Here we report a gold-free templated growth of III-V nanowires by molecular beam epitaxy using an approach that enables patternable and highly regular branched nanowire arrays on a far greater scale than what has been reported thus far. Our approach relies on the lattice-mismatched growth of InAs on top of defect-free GaAs nanomembranes yielding laterally oriented, low-defect InAs and InGaAs nanowires whose shapes are determined by surface and strain energy minimization. By controlling nanomembrane width and growth time, we demonstrate the formation of compositionally graded nanowires with cross-sections less than 50 nm. Scaling the nanowires below 20 nm leads to the formation of homogeneous InGaAs nanowires, which exhibit phase-coherent, quasi-1D quantum transport as shown by magnetoconductance measurements. These results are an important advance toward scalable topological quantum computing.
(Less)
- author
- publishing date
- 2018-04-11
- type
- Contribution to journal
- publication status
- published
- in
- Nano Letters
- volume
- 18
- issue
- 4
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85045206961
- pmid:29579392
- ISSN
- 1530-6992
- DOI
- 10.1021/acs.nanolett.8b00554
- language
- English
- LU publication?
- no
- id
- 356e4cf9-d8b0-4375-b201-63e00c414c05
- date added to LUP
- 2019-05-15 09:51:06
- date last changed
- 2024-09-03 19:02:09
@article{356e4cf9-d8b0-4375-b201-63e00c414c05, abstract = {{<p>Topological qubits based on Majorana Fermions have the potential to revolutionize the emerging field of quantum computing by making information processing significantly more robust to decoherence. Nanowires are a promising medium for hosting these kinds of qubits, though branched nanowires are needed to perform qubit manipulations. Here we report a gold-free templated growth of III-V nanowires by molecular beam epitaxy using an approach that enables patternable and highly regular branched nanowire arrays on a far greater scale than what has been reported thus far. Our approach relies on the lattice-mismatched growth of InAs on top of defect-free GaAs nanomembranes yielding laterally oriented, low-defect InAs and InGaAs nanowires whose shapes are determined by surface and strain energy minimization. By controlling nanomembrane width and growth time, we demonstrate the formation of compositionally graded nanowires with cross-sections less than 50 nm. Scaling the nanowires below 20 nm leads to the formation of homogeneous InGaAs nanowires, which exhibit phase-coherent, quasi-1D quantum transport as shown by magnetoconductance measurements. These results are an important advance toward scalable topological quantum computing.</p>}}, author = {{Friedl, Martin and Cerveny, Kris and Weigele, Pirmin and Tütüncüoglu, Gozde and Martí-Sánchez, Sara and Huang, Chunyi and Patlatiuk, Taras and Potts, Heidi and Sun, Zhiyuan and Hill, Megan O and Güniat, Lucas and Kim, Wonjong and Zamani, Mahdi and Dubrovskii, Vladimir G and Arbiol, Jordi and Lauhon, Lincoln J and Zumbühl, Dominik M and Fontcuberta I Morral, Anna}}, issn = {{1530-6992}}, language = {{eng}}, month = {{04}}, number = {{4}}, pages = {{2666--2671}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Nano Letters}}, title = {{Template-Assisted Scalable Nanowire Networks}}, url = {{http://dx.doi.org/10.1021/acs.nanolett.8b00554}}, doi = {{10.1021/acs.nanolett.8b00554}}, volume = {{18}}, year = {{2018}}, }