Felix Leditzky 🏳️🌈🏳️⚧️
@felixled.bsky.social
Assistant Professor at University of Illinois Math | Quantum information theorist | In a superposition of Central Illinois and St Louis | Vienna native | (he/him)
Pinned
Approximate Unitary k-Designs from Shallow, Low-Communication Circuits - Communications in Mathematical Physics
Random unitaries are useful in quantum information and related fields, but hard to generate with limited resources. An approximate unitary k-design is an ensemble of unitaries with an underlying measu...
link.springer.com
Our paper on approximate unitary designs in logarithmic depth with Nick LaRacuente is now published in Communications in Mathematical Physics!
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
New many-body postdoc offering at @UMDscience; come join us! umd.wd1.myworkdayjobs.com/UMCP/job/Uni...
Postdoctoral Researcher, Quantum Many-Body Theory and Quantum Computation
Job Description Summary Organization's Summary Statement: This position is available within the University of Maryland’s Division of Information Technology (DIT). The National Quantum Laboratory (QLab...
umd.wd1.myworkdayjobs.com
February 13, 2026 at 9:37 PM
New many-body postdoc offering at @UMDscience; come join us! umd.wd1.myworkdayjobs.com/UMCP/job/Uni...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
"But I am very poorly today & very stupid & hate everybody & everything. One lives only to make blunders."
Charles Darwin, who had a pretty bad day every now and then, was born #OTD in 1809. 🧪
The letter to Charles Lyell with the quote above:
www.darwinproject.ac.uk/letter?docId...
Charles Darwin, who had a pretty bad day every now and then, was born #OTD in 1809. 🧪
The letter to Charles Lyell with the quote above:
www.darwinproject.ac.uk/letter?docId...
February 12, 2025 at 3:03 PM
"But I am very poorly today & very stupid & hate everybody & everything. One lives only to make blunders."
Charles Darwin, who had a pretty bad day every now and then, was born #OTD in 1809. 🧪
The letter to Charles Lyell with the quote above:
www.darwinproject.ac.uk/letter?docId...
Charles Darwin, who had a pretty bad day every now and then, was born #OTD in 1809. 🧪
The letter to Charles Lyell with the quote above:
www.darwinproject.ac.uk/letter?docId...
New paper "Privacy-Utility Tradeoffs in Quantum Information Processing" with my postdoc Theshani Nuradha and my student Sujeet Bhalerao!
scirate.com/arxiv/2602.1...
scirate.com/arxiv/2602.1...
scirate.com
February 12, 2026 at 2:24 PM
New paper "Privacy-Utility Tradeoffs in Quantum Information Processing" with my postdoc Theshani Nuradha and my student Sujeet Bhalerao!
scirate.com/arxiv/2602.1...
scirate.com/arxiv/2602.1...
Our paper on approximate unitary designs in logarithmic depth with Nick LaRacuente is now published in Communications in Mathematical Physics!
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Approximate Unitary k-Designs from Shallow, Low-Communication Circuits - Communications in Mathematical Physics
Random unitaries are useful in quantum information and related fields, but hard to generate with limited resources. An approximate unitary k-design is an ensemble of unitaries with an underlying measu...
link.springer.com
February 6, 2026 at 1:56 PM
Our paper on approximate unitary designs in logarithmic depth with Nick LaRacuente is now published in Communications in Mathematical Physics!
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
My TQC submission.
February 2, 2026 at 10:12 PM
My TQC submission.
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
I bury my head in the sand when I see some of these maps
January 20, 2026 at 3:35 PM
I bury my head in the sand when I see some of these maps
Whaaaaat. OT here we come. This is so stressful
January 19, 2026 at 2:41 AM
Whaaaaat. OT here we come. This is so stressful
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
Several postdoc positions to work on quantum computing with Simon Devitt, at UTS: quantumts.org/open-positio...
Open Positions
PhD positions Coming soon (Australian student only)- Topic: Blueprint quantum processor with nuclear spin logical qubits in silicon. Postdoc positions Postdoctoral Research Fellow – Rottnest:…
quantumts.org
January 18, 2026 at 9:31 PM
Several postdoc positions to work on quantum computing with Simon Devitt, at UTS: quantumts.org/open-positio...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
The real reason why you need to submit your slides before the start of #QIP2026 is so that during the conference you have time to work on your #TQC2026 submission.
Asking researchers to submit their presentation slides by Wednesday of the week _before_ the conference starts is a tall order 😅 good luck! #qip2026
January 17, 2026 at 8:31 AM
Asking researchers to submit their presentation slides by Wednesday of the week _before_ the conference starts is a tall order 😅 good luck! #qip2026
January 15, 2026 at 3:41 PM
Asking researchers to submit their presentation slides by Wednesday of the week _before_ the conference starts is a tall order 😅 good luck! #qip2026
Some of the responses and quote skeets are 👌
The Lord of The Rings movies were rated PG-13. By current rules that means that each film could contain one use of the word "Fuck". Which line are you altering to insert the most useful swear word?
"I can't carry it for you, but I can Fucking carry you"
"I can't carry it for you, but I can Fucking carry you"
December 27, 2025 at 10:06 AM
Some of the responses and quote skeets are 👌
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
We recently received a referee report from Phys. Rev. Lett. @apsphysics.bsky.social that was obviously written by generative AI. It is so bizarre to read it; I have never received anything like it before. What measures is @apsphysics.bsky.social taking to ensure the integrity of the review process?
December 10, 2025 at 11:59 PM
We recently received a referee report from Phys. Rev. Lett. @apsphysics.bsky.social that was obviously written by generative AI. It is so bizarre to read it; I have never received anything like it before. What measures is @apsphysics.bsky.social taking to ensure the integrity of the review process?
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
Pedro Pascal in Turbo Pascal
June 3, 2025 at 12:44 AM
Pedro Pascal in Turbo Pascal
Just ordered a copy to pick up in my local book store,* been meaning to read this for a while now! 🤗
For example you could give my first book to everyone you know, no need to worry about coming up with gift ideas anymore
Available in hardcover, paperback, audiobook, and ebook 🥹
www.boldtypebooks.com/titles/chand...
Available in hardcover, paperback, audiobook, and ebook 🥹
www.boldtypebooks.com/titles/chand...
The Disordered Cosmos
www.boldtypebooks.com
November 26, 2025 at 2:18 AM
Just ordered a copy to pick up in my local book store,* been meaning to read this for a while now! 🤗
shut up and purify
arxiv.org/abs/2511.15806
arxiv.org/abs/2511.15806
Mixed state tomography reduces to pure state tomography
A longstanding belief in quantum tomography is that estimating a mixed state is far harder than estimating a pure state. This is borne out in the mathematics, where mixed state algorithms have always ...
arxiv.org
November 22, 2025 at 2:37 PM
shut up and purify
arxiv.org/abs/2511.15806
arxiv.org/abs/2511.15806
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
To be clear (it is the internet, after all) there are plenty of truly wonderful, non-sociopathic people in positions of influence within academia. I just think we are too forgiving of the bad people.
November 17, 2025 at 10:06 PM
To be clear (it is the internet, after all) there are plenty of truly wonderful, non-sociopathic people in positions of influence within academia. I just think we are too forgiving of the bad people.
The list of accepted papers for #QIP2026 is now online at qip2026.lu.lv/programme/ac...
Accepted papers
qip2026.lu.lv
November 11, 2025 at 1:28 PM
The list of accepted papers for #QIP2026 is now online at qip2026.lu.lv/programme/ac...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
Never forget.
November 8, 2025 at 9:55 PM
Never forget.
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
If you are interested in doing a postdoc with me, please apply to the IQC postdoctoral fellowship here: iqc-uwaterloo.slideroom.com#/login/progr...
University of Waterloo
Attn: Institute for Quantum Computing - SlideRoom
Apply to University of Waterloo
Attn: Institute for Quantum Computing. Powered by SlideRoom.
iqc-uwaterloo.slideroom.com
November 6, 2025 at 7:12 PM
If you are interested in doing a postdoc with me, please apply to the IQC postdoctoral fellowship here: iqc-uwaterloo.slideroom.com#/login/progr...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
I love quantum computing (& quantum information science, even more), don't get me wrong --
but we have to acknowledge how much of the so-called "ecosystem" this captures:
but we have to acknowledge how much of the so-called "ecosystem" this captures:
November 5, 2025 at 1:11 PM
I love quantum computing (& quantum information science, even more), don't get me wrong --
but we have to acknowledge how much of the so-called "ecosystem" this captures:
but we have to acknowledge how much of the so-called "ecosystem" this captures:
Department of Physics at UIUC is looking for an Assistant Professor in Theoretical Quantum Information Science, including, but not limited to, quantum error correction, quantum optics, quantum algorithms, and AMO physics.
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Grainger Engineering: Assistant Professor in Theoretical QIS - Department of Physics
Duties & Responsibilities
illinois.csod.com
November 5, 2025 at 1:14 PM
Department of Physics at UIUC is looking for an Assistant Professor in Theoretical Quantum Information Science, including, but not limited to, quantum error correction, quantum optics, quantum algorithms, and AMO physics.
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Application deadline: Dec 1
illinois.csod.com/ux/ats/caree...
Reposted by Felix Leditzky 🏳️🌈🏳️⚧️
Tenure track position in Dept C&O, U Waterloo, with continuous optimization as priority area!
www.mathjobs.org/jobs/lists/2...
www.mathjobs.org/jobs/lists/2...
MathJobs from the the American Mathematical Society
Mathjobs is an automated job application system sponsored by the AMS.
www.mathjobs.org
October 30, 2025 at 9:03 PM
Tenure track position in Dept C&O, U Waterloo, with continuous optimization as priority area!
www.mathjobs.org/jobs/lists/2...
www.mathjobs.org/jobs/lists/2...