, 9 tweets, 4 min read Read on Twitter
1/ This evening my first paper as a PI @CornellAEP came out as a preprint. Congratulations and deep thanks to my talented co-authors and colleagues, Hiro and Edwin, for joining me on the journey, and doing the lion's share of the work! arxiv.org/abs/1907.05483
2/ Our work tackles a long-standing challenge in quantum engineering: how to achieve all-to-all connectivity and full programmability between qubits built with superconducting circuits. I'll let our paper describe what we did, but I wanted to give the backstory on Twitter.
3/ This is my first paper where Sunday-afternoon reading of papers outside my field has paid off directly. I randomly read a paper (Ref. 15) on connectivity in classical neuromorphic computers and it struck me that one might apply intuition from it to quantum systems.
4/ I drew Hiro and Edwin into turning this vague idea into (theoretical) reality. This turned out to be possible thanks to their skill, creativity, and tenacity, but also much more difficult than we expected at first!
5/ Some more Sunday-afternoon reading about Floquet topological insulators gave us a critical mathematical tool with which to analyze our system, as well as intuition to use periodic (in particular, harmonic) modulation.
6/ I'm looking forward to my group experimentally realizing our scheme -- watch this space! We think it should be possible to scale our approach to systems with 1000+ qubits, but we're of course going to start off with a far more modest number and see what happens.
7/ I'd like to thank many members of the superconducting-circuits community @BerkeleyPhysics @GoogleAI @MIT_Physics @tuvienna @Yale_QI for graciously answering questions from us, all three complete newbies to the area. Please see the Acknowledgements section in our paper.
8/ P.S. A couple of photos from the project: A.) One of our early jam sessions in 2017, trying to replicate the classical-neuromorphic-computing results. (Hiro closer to the monitor, Edwin further away.)
9/ B.) The board during an analytics session where we found the Floquet solution to first order (the boxed equation is a close relative of Eq. S1.8 in the preprint). Following this we spent nearly another year performing numerical experiments to check correctness and scalability.
Missing some Tweet in this thread?
You can try to force a refresh.

Like this thread? Get email updates or save it to PDF!

Subscribe to Peter McMahon
Profile picture

Get real-time email alerts when new unrolls are available from this author!

This content may be removed anytime!

Twitter may remove this content at anytime, convert it as a PDF, save and print for later use!

Try unrolling a thread yourself!

how to unroll video

1) Follow Thread Reader App on Twitter so you can easily mention us!

2) Go to a Twitter thread (series of Tweets by the same owner) and mention us with a keyword "unroll" @threadreaderapp unroll

You can practice here first or read more on our help page!

Follow Us on Twitter!

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just three indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3.00/month or $30.00/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!