Matthew Sarsby

We are looking for a Quantum Hardware Engineer to help build the future of quantum computing. If you're passionate about the design–build–measure–debug loop and love working with systems, electronics, or cryogenics — we want to hear from you. iqm.teamtailor.com/jobs/5599740-q…

So I make a lot of programmatically generated documentation and diagrams. I do use a tiny homemade library to help the python interface to SVG. I've open sourced what I find is a very handy tiny bit of code github.com/GeneralSarsby/…

@meetIQM @JanGoetz6 @jjvartiainen @HermanniHei Check out the figures 4 and 5 for the cryogenics and the system-in-a-box photographs! 📸

Unveiling our latest whitepaper! Our spotlight is on a 20-qubit quantum computer, featuring the IQM Garnet QPU, which we will scale up to 150 qubits. Discover more insights and download here: cdn.prod.website-files.com/6523f13a748909… @JanGoetz6 @jjvartiainen @HermanniHei

@Xangrydocs @nccrSpin That is a parallel array of adiabatic nuclear cooling stages, used to cool the sample below directly through the control lines to temperatures colder than achievable from any dilution fridge.

NCCR SPIN's Prof. Dominik Zumbühl is named APS fellow 2023 "for quantum transport experiments in semiconductor nanostructures at low temperatures studying coherence, spins, and spin-orbit coupling including developing and deploying laboratory instruments.“ Congratulations!

@Fraustief_in_IT @fzj_jsc @LRZ_DE This is a showcase of some real cryomechanical hardware used to build the quantum computers of @meetIQM .

Ich hatte gerade eine Sneak Peak in der Exhibition der #ISC23 und da gibt es #QuantumComputing zum Anfassen 🤩 Vielen Dank an die Austeller vom ⁦⁦@fzj_jsc⁩ und ⁦@LRZ_DE⁩ für die kleine Einführung. 🫶🏻

Okay Quantum Twitter, What's your preferred symbol for a dielectric loss component in your circuit diagrams? I see a) around lots, b) makes some sense, less common, c) is the wordy way out.

@AndreasAtETH @qudev @ETH @ETH_en @ETHQuantumCntr I love these things. I don't have a source on the actuators for the rods.

Since you seem to have enjoyed our square fridge, here is a bonus photo: A square fridge puzzle. Also fun to look at. And to put together. Any guesses what the different parts are for? (Also a big shout out to our technical team who did all the work!)

How lucky are we with cryostats to have unicode symbols that perfectly describe a warm up 📈 and a cooldown 📉. They even the red and blue colours the right way around!

What's the right collective noun for a set of dilution fridges?

@harriet_oxinst @OxInst Second question. Do you have data on the effect for large payloads? Cooling an empty fridge fast is one thing, but with a 50kg mass on the MC this should help even more.

A great start to 2023! Check out this nice paper in cryogenics from the development team at @OxInst #dilutionrefrigerators #quantumtechnology #innovation #cryogenics #LifeAtOI sciencedirect.com/science/articl…

@harriet_oxinst @OxInst That's really neat! I was going to try to make my own, do you sell them yet?

@AndreasAtETH It's the physicists number 1 choice in cryogenic ties. Just avoid the scented flavors.

What is the relation between dental floss and #quantum computers? Anyone? Just checking.

"A Christmas poem about quantum computers" - A prompt

@AndreasAtETH @ETH_en @psich_en yeah, a lot like that! 😁 looks good!

@generalsarsby @ETH_en @psich_en Like this? twitter.com/AndreasAtETH/s…

More nice storage solutions for our quantum tools at the Superconducting Circuits Lab of the @ETH_en - @psich_en #Quantum #Computing Hub. How do you store your sensitive magnetic shields or your microwave components?

@DrDonutsLab These are Au plated copper. Mechanical stability reduces electromotive and triboelectric pickup. Thermally to help only a little as there is ptfe dielectric insulation and then weak electron photon coupling in a low loss transmission. But it's better than floating

I am surly biased, but I do love a well cable managed fridge. How do you keep yours tidy?

Hey quantum folks: We have now a dedicated #quantum Mastodon server: qubit-social.xyz. Here is the invite for you guys to join: qubit-social.xyz/invite/nCagvzhx Feel free to share with all qubit loving people! May the qubit be with you! @AndreasAtETH @preskill

Had a quick look and thoughts of the Model I. @cryoZP Some guesswork around the heat exchangers. I wonder how this stacks up with the established commercial Inverted dilution fridges on the market (from qinu.de)

@AndreasAtETH @ETH_en @psich_en @KerschbaumMi @BesseJC @eichler__chris @AlainFauquex @Joel_Mesot @ETHQuantumCntr @qudev @ETH_physics @ETH Did you know 1 or 0.5µm of gold plating is 'relatively' cheap. You don't have to be up-sold to the 2.5µm thickness. Counter point to that is that oxidized copper itself is a good IR absorber at low temperatures, giving free blackening in the spectrum that some worry about. 🤷‍♂️

First superconducting #quantum bits measured (on a 17-qubit device) at the @ETH_en - @psich_en #QuantumComputing Hub only 8 months after moving in. A big thank you goes to the great team making it possible. Read more here: psi.ch/en/scd/scienti… More qubits to come!