# Single-Shot Spin Readout in Graphene Quantum Dots

https://mdr.nims.go.jp/datasets/2d55a2b9-8b0f-4d5e-8bb2-9a1098a96e93

## File

- [PRXQuantum.3.020343.pdf](https://mdr.nims.go.jp/filesets/791f34c9-d352-4b1e-927b-b25abf676187/download) ([Detail](https://mdr.nims.go.jp/filesets/791f34c9-d352-4b1e-927b-b25abf676187.md))

## Id

2d55a2b9-8b0f-4d5e-8bb2-9a1098a96e93

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-27T08:04:22.985705Z

## Updated at

2025-02-28T07:30:47.217317Z

## Published at

2025-02-28T07:30:47.289838Z

## Doi



## First published url

https://doi.org/10.1103/prxquantum.3.020343

## Date published

2022-05-26

## Recorded date published

2022-5

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Single-Shot Spin Readout in Graphene Quantum Dots
  title_type: original
  lang: en

## Description

- description: Electrostatically defined quantum dots (QDs) in bilayer graphene offer
    a promising platform for spin qubits with presumably long coherence times due
    to low spin-orbit coupling and low nuclear spin density. We demonstrate two different
    experimental approaches to measure the decay times of excited states. One is based
    on direct current measurements through the quantum device. Pulse sequences are
    applied to tuning gates that control the occupation of ground and excited states.
    Similar to previous experiments we find a lower bound for the excited state decay
    on the order of a hundred microseconds. The other approach uses a capacitively
    coupled charge sensor to study the time dynamics of the excited state using Elzerman
    technique. The long excited state relaxation time allows us to measure the excited
    state tunneling events. Here we demonstrate single-shot readout, an important
    step for any quantum information processor.
  description_type: abstract
  lang: und

## Creator

- name: Lisa Maria Gächter
  role: author
- name: Rebekka Garreis
  role: author
- name: Jonas Daniel Gerber
  role: author
- name: Max Josef Ruckriegel
  role: author
- name: Chuyao Tong
  role: author
- name: Benedikt Kratochwil
  role: author
- name: Folkert Kornelis de Vries
  role: author
- name: Annika Kurzmann
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Thomas Ihn
  role: author
- name: Klaus Ensslin
  role: author
- name: Wister Wei Huang
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Quantum dots
  schema: not_defined
- subject: spin qubits
  schema: not_defined
- subject: bilayer graphene
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: PRX Quantum
  issn: '26913399'
  volume: '3'
  issue: '2'
  article_number: '020343'

## Conference



## Related item



## Funding

- identifier: '862660'
  funder_name: Horizon 2020
- funder_name: NCCR QSIT
- identifier: 51NF40-185902
  funder_name: Swiss National Science Foundation
- identifier: '766025'
  funder_name: Marie Sklodowska-Curie
- identifier: JPMXP0112101001
  funder_name: MEXT
- identifier: JP20H00354
  funder_name: JSPS
- funder_name: CREST

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## Measurement method



## Specimen



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## Fileset

- id: 791f34c9-d352-4b1e-927b-b25abf676187
  filename: PRXQuantum.3.020343.pdf
  content_type: application/pdf
  size: 1765999
  md5: d1ae64b0f21d2d9eb5b5f9e824e69620

## Thumbnail

fileset_id: 791f34c9-d352-4b1e-927b-b25abf676187
filename: PRXQuantum.3.020343.pdf