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)
Sending good vibes! With a big cat from the St Louis Zoo just being a cat.
September 4, 2025 at 1:24 AM
Sending good vibes! With a big cat from the St Louis Zoo just being a cat.
For the 6th season in a row I'm fielding my "Entanglement Wedges" team in Fantasy Premier League.
To the best of my knowledge this term was coined in arxiv.org/abs/1704.05839.
#FPL #FPLBluesky #FPLCommunity
To the best of my knowledge this term was coined in arxiv.org/abs/1704.05839.
#FPL #FPLBluesky #FPLCommunity
August 15, 2025 at 5:36 PM
For the 6th season in a row I'm fielding my "Entanglement Wedges" team in Fantasy Premier League.
To the best of my knowledge this term was coined in arxiv.org/abs/1704.05839.
#FPL #FPLBluesky #FPLCommunity
To the best of my knowledge this term was coined in arxiv.org/abs/1704.05839.
#FPL #FPLBluesky #FPLCommunity
"Freie Wissenschaft ist ebenso selbstverständlich wie freies Atmen." - Lise Meitner
Free science is as natural as breathing freely.
Seen in a Munich subway station.
Free science is as natural as breathing freely.
Seen in a Munich subway station.
July 16, 2025 at 12:39 PM
"Freie Wissenschaft ist ebenso selbstverständlich wie freies Atmen." - Lise Meitner
Free science is as natural as breathing freely.
Seen in a Munich subway station.
Free science is as natural as breathing freely.
Seen in a Munich subway station.
I went to @powells.bsky.social in Portland, OR (great bookstore, check it out!) and secured a signed copy of @rhodesben.bsky.social's "After the Fall" 🤗
June 3, 2025 at 1:51 PM
I went to @powells.bsky.social in Portland, OR (great bookstore, check it out!) and secured a signed copy of @rhodesben.bsky.social's "After the Fall" 🤗
Excerpt from Roger Howe's "Perspectives on Invariant theory: Schur duality, multiplicity-free actions and beyond".
I will make sure to start next term's lecture on Schur-Weyl duality with "Now with the multilinear algebra nonsense out of the way, let's do some double commutant yoga!"
I will make sure to start next term's lecture on Schur-Weyl duality with "Now with the multilinear algebra nonsense out of the way, let's do some double commutant yoga!"
April 23, 2025 at 4:21 PM
Excerpt from Roger Howe's "Perspectives on Invariant theory: Schur duality, multiplicity-free actions and beyond".
I will make sure to start next term's lecture on Schur-Weyl duality with "Now with the multilinear algebra nonsense out of the way, let's do some double commutant yoga!"
I will make sure to start next term's lecture on Schur-Weyl duality with "Now with the multilinear algebra nonsense out of the way, let's do some double commutant yoga!"
We finally have a copy of Quantum Steampunk, and signed by Nicole with a personal dedication 😍
April 13, 2025 at 2:57 PM
We finally have a copy of Quantum Steampunk, and signed by Nicole with a personal dedication 😍
I haven't written a textbook yet, but if I ever do I should try to have a red book cover theme
March 31, 2025 at 1:52 PM
I haven't written a textbook yet, but if I ever do I should try to have a red book cover theme
Remember Mike and Ike? Well I have found another one.
March 31, 2025 at 1:45 PM
Remember Mike and Ike? Well I have found another one.
In quantum information theory you sometimes need to have an explicit form of the complementary channel of a quantum channel.
Given a Kraus representation of the original channel, it's straightforward to write down a Kraus representation of the complementary channel via slicing arrays!
Given a Kraus representation of the original channel, it's straightforward to write down a Kraus representation of the complementary channel via slicing arrays!
March 18, 2025 at 7:00 PM
In quantum information theory you sometimes need to have an explicit form of the complementary channel of a quantum channel.
Given a Kraus representation of the original channel, it's straightforward to write down a Kraus representation of the complementary channel via slicing arrays!
Given a Kraus representation of the original channel, it's straightforward to write down a Kraus representation of the complementary channel via slicing arrays!
Continuing PSAs of potentially lesser known facts in QIT: spanning sets for the symmetric subspace!
It is quite well-known that the set {|v>^{⊗n}: |v> ∈ H} spans the symmetric subspace Sym^n(H).
But taking all vectors with components from a finite set A also spans Sym^n(H), provided |A|≥n+1!
It is quite well-known that the set {|v>^{⊗n}: |v> ∈ H} spans the symmetric subspace Sym^n(H).
But taking all vectors with components from a finite set A also spans Sym^n(H), provided |A|≥n+1!
March 17, 2025 at 7:56 PM
Continuing PSAs of potentially lesser known facts in QIT: spanning sets for the symmetric subspace!
It is quite well-known that the set {|v>^{⊗n}: |v> ∈ H} spans the symmetric subspace Sym^n(H).
But taking all vectors with components from a finite set A also spans Sym^n(H), provided |A|≥n+1!
It is quite well-known that the set {|v>^{⊗n}: |v> ∈ H} spans the symmetric subspace Sym^n(H).
But taking all vectors with components from a finite set A also spans Sym^n(H), provided |A|≥n+1!
February 25, 2025 at 9:16 PM
"ChatGPT can make mistakes. Check important info."
Glad to see that I still have a job.
Glad to see that I still have a job.
February 12, 2025 at 5:38 PM
"ChatGPT can make mistakes. Check important info."
Glad to see that I still have a job.
Glad to see that I still have a job.
ok one more and then I'll stop
December 12, 2024 at 2:06 AM
ok one more and then I'll stop
(ok technically this was recorded and released in 2000 but I'm gonna play it anyways)
December 12, 2024 at 2:00 AM
(ok technically this was recorded and released in 2000 but I'm gonna play it anyways)
Post a PERFECT album from the 90's that is neither Nirvana nor Pearl Jam.
December 12, 2024 at 1:31 AM
Post a PERFECT album from the 90's that is neither Nirvana nor Pearl Jam.
A group picture featuring Nilanjana Datta and all of her former and current PhD students, taken during the birthday symposium Mark Wilde and I organized for (and with) her in good ol' Cambridge this summer.
I feel so lucky to have had Nilanjana as my PhD advisor!
I feel so lucky to have had Nilanjana as my PhD advisor!
December 9, 2024 at 2:01 AM
A group picture featuring Nilanjana Datta and all of her former and current PhD students, taken during the birthday symposium Mark Wilde and I organized for (and with) her in good ol' Cambridge this summer.
I feel so lucky to have had Nilanjana as my PhD advisor!
I feel so lucky to have had Nilanjana as my PhD advisor!
You need cooling
Baby I'm not fooling
I'm gonna send ya
Back to schooling
Baby I'm not fooling
I'm gonna send ya
Back to schooling
November 26, 2024 at 3:40 AM
You need cooling
Baby I'm not fooling
I'm gonna send ya
Back to schooling
Baby I'm not fooling
I'm gonna send ya
Back to schooling