Bas Nijholt

Bas Nijholt

Staff Engineer

IonQ

Biography

Hi, my name is Bas. I am a: Python and open-source enthusiast, Ph.D. in theoretical quantum mechanics, and full-time nerd. Originally I am from the Netherlands, but currently, I live in Redmond, Washington, USA.

Here (or here ) are some pretty pictures that I took, this is where I did my Ph.D., I work at IonQ (previously at Microsoft Quantum ), and see my LinkedIn for some technical details on my daily activities.

Interests
  • Quantum Mechanics
  • Landscape photography
  • Open-source software
  • Hiking in the mountains
  • Blockchain technology
  • Home automation
  • Artificial Intelligence
Education

  • PhD in computational Quantum Mechanics, 2020

    TU Delft

  • MSc in Applied Physics, 2015

    TU Delft

  • BSc in Applied Physics, 2012

    TU Delft

Blog Posts

Sparse scribblings on a variety of topics

πŸ“š Discovering Git Worktrees: A Handy Tool for Multitasking
An overview of how Git worktrees can simplify your workflow by allowing simple management of multiple branches within a single repository.
Last updated on 2024-09-19 1 min read technology, tutorial, level:beginner
πŸ’½ Friend-to-Friend TrueNAS Backups: Secure, Decentralized Storage Without the Cloud
Learn how to create a secure, decentralized backup system using TrueNAS and ZFS replication. This guide shows you how to partner with a friend for mutual backups, leveraging the power of ZFS while maintaining network isolation and data privacy.
Last updated on 2024-08-24 6 min read technology, tutorial, level:intermediate
πŸ’½ Friend-to-Friend TrueNAS Backups: Secure, Decentralized Storage Without the Cloud
πŸ”§ My Homelab: from a single Raspberry Pi to a Proxmox cluster and a dedicated NAS
An overview of my journey from using a Raspberry Pi for Home Assistant to creating a Proxmox cluster and dedicated NAS for running various services efficiently.
Last updated on 2024-07-20 8 min read technology, tutorial, level:intermediate
🐍 Python Environment Paradise: Finding My Perfect Workflow 🌴
A Personal Journey Through Pyenv, Pipenv, venv, Virtualenv, Homebrew, Anaconda, Miniconda, and finally Micromamba
Last updated on 2023-04-27 8 min read setup, level:beginner
🐍 Python Environment Paradise: Finding My Perfect Workflow 🌴
πŸš€ Supercharging Your Python Development: A Guide to the Best Tools When Building a Package πŸ“¦
Explore the top developer tools for enhancing productivity and code quality in Python projects
Last updated on 2023-04-23 21 min read setup, level:intermediate
πŸš€ Supercharging Your Python Development: A Guide to the Best Tools When Building a Package πŸ“¦
🍏 Setting Up Your Fresh MacOS Installation: A Comprehensive Guide βœ…
Streamline your MacOS setup with Homebrew, over 100 essential apps, and customization tips
Last updated on 2023-06-11 21 min read setup, level:beginner
🍏 Setting Up Your Fresh MacOS Installation: A Comprehensive Guide βœ…
⚑ VSCode Setup and Most Used Keystrokes for Turbocharged (Mostly Python) Development 🐍
My personal setup for maximal productivity and minimal keystrokes.
Last updated on 2024-01-27 11 min read editor, level:beginner
⚑ VSCode Setup and Most Used Keystrokes for Turbocharged (Mostly Python) Development 🐍
πŸ‘©β€πŸ’» Be a Ninja in the Terminal πŸ₯·
A setup for maximal productivity and minimal keystrokes, with zsh, oh-my-zsh, keychain, starship, autoenv, z, zsh-autosuggestions, and more.
Last updated on 2023-04-25 9 min read terminal, level:intermediate
πŸ‘©β€πŸ’» Be a Ninja in the Terminal πŸ₯·
🎨 Crafting Unique Ph.D. Thesis Covers with Python 🐍
πŸ” Exploring Quantum Device Simulations, Adaptive Sampling, and Neural Networks to Create Visually Stunning Thesis Covers πŸ“š
Last updated on 2023-04-23 5 min read phd, education, level:fun
🎨 Crafting Unique Ph.D. Thesis Covers with Python 🐍

Projects

Open-source, see my GitHub profile

*
all python home-automation education parallel-computing
numthreads

numthreads

numthreads: Simple Python package to set the number of threads used by OpenBLAS, MKL, OMP, NumExpr, and Accelerate

UniDep

UniDep

unidep: Unified Conda and Pip Dependency Management 🐍

PipeFunc

PipeFunc

pipefunc: Lightweight function pipeline creation 🐍

rsync-time-machine.py

rsync-time-machine.py

πŸ’» rsync-time-machine.py: Your cross-platform, flexible, and incremental backup solution using rsync, offering Time Machine-style backups with added versatility. πŸ’½πŸš€. πŸ”„

WenFire ⁉️πŸ”₯

WenFire ⁉️πŸ”₯

WenFire: WebApp visualizing your path to financial independence, built with personalizable assumptions and interactive visualizations. Ignite your journey to early retirement! πŸ’Έ

Adaptive Lighting

Adaptive Lighting

🌞 Adaptive Lighting: Home Assistant custom component for auto-adjusting color temperature and brightness of lights based on daylight. πŸŒ™

CodeStructure

πŸ”Ž CodeStructure: Extract Python code signatures without execution, providing a clear structure overview. πŸ“š

Home Assistant Streamdeck YAML

🏠 Home Assistant Streamdeck YAML: Control Home Assistant on Stream Deck across all OS with YAML configuration. πŸŽ›οΈ

Markdown Code Runner

Markdown Code Runner

πŸ’» Markdown Code Runner: Auto-execute code blocks in Markdown files and refresh the output in-place. πŸ”„

home-assistant-macbook-touch-bar

home-assistant-macbook-touch-bar

home-assistant-macbook-touch-bar: Displaying sensors and controlling IoT devices using the Macbook Pro’s touch bar πŸ€–πŸ’»

PhD thesis

PhD thesis

thesis.pdf: Towards realistic numerical simulations of Majorana devices (2020)

Thesis cover

Thesis cover

thesis-cover: each unique copy is designed using quantum simulation data, neural networks, machine learning, and Python

python-yaml2bib

python-yaml2bib

yaml2bib: Convert a readable yaml file with DOIs only to a properly formatted BibTeX file. πŸ“ƒ

Python-adaptive

Python-adaptive

adaptive: tools for adaptive parallel sampling of mathematical functions to speed up simulations by orders of magnitude βš™οΈ

python-instacron

python-instacron

instacron: Instagram for the lazy - automatically upload a photo to Instagram with autogenerated caption containing #hashtags, a quote, and camera information πŸ“ΈπŸŒ…

Topology in condensed matter course

Topology in condensed matter course

Tying Quantum Knots. An online course for which I wrote a lot of code. See the course website which is generated using these Jupyter notebooks.

Adaptive-scheduler

Adaptive-scheduler

adaptive-scheduler: Run simulations adaptively on many cores (>10k) and easily manage starting and restarting using mpi4py.futures, ipyparallel, or dask-mpi 🎉

Home Assistant

Home Assistant

Many things in my house are automated using the Python Home Assistant framework. I’ve built some interseting automations and app, see my config files and AppDaemon apps 🏠 🤖

ipynb_git_filters

ipynb_git_filters: remove ipynb’s output on each commit to keep a clean history. Not very smart but very useful πŸ€–

nijho.lt

nijho.lt

nijho.lt: my website made with Hugo on Github that is automatically deloyed with Netlify 🦾

python-aiokef

python-aiokef

aiokef: An asyncio Python library that provides an API to communicate KEF speakers πŸ”ˆ

python-crypto-bot

python-crypto-bot

crypto-bot: an async cryptocurrency bot using zmq, asyncio, websockets and mad triangular arbitrage trading strategies β™²πŸ’΅

python-hpc05

python-hpc05

hpc05: a thin wrapper around ipyparallel to easily start workers remotely on a HPC cluster πŸ–₯

Photography

The hobby

I enjoy traveling and photography. The best photos I would like to to share with the world, however, the problem is that I am to lazy too do so, therefore I wrote a program (instacron ) that will do that job for me. It takes a photo and adds: a random quote, camera and location info, and #hashtags related to the photo.

    Publications

    Citation metrics at Google Scholar

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    Interferometric Single-Shot Parity Measurement in an InAs-Al Hybrid Device
    Morteza Aghaee, Alejandro Alcaraz Ramirez, Zulfi Alam, Rizwan Ali, Mariusz Andrzejczuk, Andrey E. Antipov, Mikhail Astafev, Amin Barzegar, Bela Bauer, Jonathan Becker, Alex Bocharov, Srini Boddapati, David Bohn, Jouri Bommer, Esben Bork Hansen, Leo Bourdet, Arnaud Bousquet, Samuel Boutin, Signe Brynold Markussen, Juan Carlos Estrada SaldaΓ±a and 130 more.
    Preprint PDF 2401.09549
    Pre-screening and tuning heterojunctions for topological quantum computer
    Dmitry I. Pikulin, Mason Thomas, Chetan Nayak, Roman M. Lutchyn, Bas Nijholt, Bernard van Heck, Esteban A. Martinez, Georg W. Winkler, Gijs de Lange, John D. Watson, Sebastian Heedt, Torsten Karzig.
    PDF US11808796B2
    InAs-Al Hybrid Devices Passing the Topological Gap Protocol
    Morteza Aghaee, Arun Akkala, Zulfi Alam, Rizwan Ali, Alejandro Alcaraz Ramirez, Mariusz Andrzejczuk, Andrey E. Antipov, Pavel Aseev, Mikhail Astafev, Bela Bauer, Jonathan Becker, Srini Boddapati, Frenk Boekhout, Jouri D. S. Bommer, Esben Bork Hansen, Tom Bosma, Leo Bourdet, Samuel Boutin, Philippe Caroff, Lucas Casparis and 107 more.
    PDF Code Dataset arXiv:2207.02472 10.1103/PhysRevB.107.245423
    Adaptive: parallel active learning of mathematical functions
    Bas Nijholt, Joseph Weston, Anton R. Akhmerov.
    Preprint PDF Code Paper draft source code Documentation
    Protocol to identify a topological superconducting phase in a three-terminal device
    Dmitry I. Pikulin, Bernard van Heck, Torsten Karzig, Esteban A. Martinez, Bas Nijholt, Tom Laeven, Georg W. Winkler, John D. Watson, Sebastian Heedt, Mine TemΓΌrhan, Vicky Svidenko, Roman M. Lutchyn, Mason Thomas, Gijs de Lange, Lucas Casparis, Chetan Nayak.
    Preprint PDF arXiv:2103.12217
    Enhanced proximity effect in zigzag-shaped Majorana Josephson junctions
    Tom Laeven, Bas Nijholt, Michael Wimmer, Anton R. Akhmerov.
    PDF Code Dataset arXiv:1903.06168 10.1103/PhysRevLett.125.086802 GitHub
    Towards realistic numerical simulations of Majorana devices
    Bas Nijholt.
    PDF Code Ph.D. thesis ISBN:978-90-8593-438-7 Thesis cover
    Reproducing topological properties with quasi-Majorana states
    Adriaan Vuik, Bas Nijholt, Anton R. Akhmerov, Michael Wimmer.
    PDF Code Dataset arXiv:1806.02801 10.21468/SciPostPhys.7.5.061
    Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires
    Jouri D. S. Bommer, Hao Zhang, Önder Gül, Bas Nijholt, Michael Wimmer, Filipp N. Rybakov, Julien Garaud, Donjan Rodic, Egor Babaev, Matthias Troyer, Diana Car, Sébastien R. Plissard, Erik P. A. M. Bakkers, Kenji Watanabe, Takashi Taniguchi, Leo P. Kouwenhoven.
    PDF arXiv:1807.01940 10.1103/PhysRevLett.122.187702
    Supercurrent interference in few-mode nanowire Josephson junctions
    Kun Zuo, Vincent Mourik, Daniel B. Szombati, Bas Nijholt, David J. van Woerkom, Attila Geresdi, Jun Chen, Viacheslav P. Ostroukh, Anton R. Akhmerov, Sébastien R. Plissard, Diana Car, Erik P. A. M. Bakkers, Dmitry I. Pikulin, Leo P. Kouwenhoven, Sergey M. Frolov.
    PDF Code arXiv:1706.03331 10.1103/PhysRevLett.119.187704
    Robustness of Majorana bound states in the short junction limit
    Doru Sticlet, Bas Nijholt, Anton R. Akhmerov.
    PDF Code arXiv:1509.02675 10.1103/PhysRevB.95.115421
    Annealing helicase HARP closes RPA-stabilized DNA bubbles non-processively
    Daniel R. Burnham, Bas Nijholt, Iwijn De Vlaminck, Jinhua Quan, Timur Yusufzai, Cees Dekker.
    PDF 10.1093/nar/gkx147
    Orbital effect of magnetic field on the Majorana phase diagram
    Bas Nijholt, Anton R. Akhmerov.
    PDF Code Dataset arXiv:1509.02675 10.1103/PhysRevB.93.235434
    Conductance quantization at zero magnetic field in InSb nanowires
    Jakob Kammhuber, Maja C. Cassidy, Hao Zhang, Önder Gül, Fei Pei, Michiel W. A. de Moor, Bas Nijholt, Kenji Watanabe, Takashi Taniguchi, Diana Car, Sébastien R. Plissard, Erik P. A. M. Bakkers, Leo P. Kouwenhoven.
    PDF arXiv:1603.03751 10.1021/acs.nanolett.6b00051

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