ChunnyD
@chunyangding.com
Fluxonium enthusiast, current #PhD at Schusterlab (formerly at Google, UChicago, IonQ, and Yale), broad reader, lifelong learner, eternal dreamer, cat dad. https://chunyangding.com
Reposted by ChunnyD
Hey! Northern hemisphere folks:
this is my annual reminder to myself and perhaps also to you that if you have the schedule autonomy to permit it, get out for a walk or whatever during daylight hours! It's important!
You can work more when it's dark but you need whatever sunlight is available!
this is my annual reminder to myself and perhaps also to you that if you have the schedule autonomy to permit it, get out for a walk or whatever during daylight hours! It's important!
You can work more when it's dark but you need whatever sunlight is available!
November 18, 2025 at 4:39 AM
Hey! Northern hemisphere folks:
this is my annual reminder to myself and perhaps also to you that if you have the schedule autonomy to permit it, get out for a walk or whatever during daylight hours! It's important!
You can work more when it's dark but you need whatever sunlight is available!
this is my annual reminder to myself and perhaps also to you that if you have the schedule autonomy to permit it, get out for a walk or whatever during daylight hours! It's important!
You can work more when it's dark but you need whatever sunlight is available!
Reposted by ChunnyD
This is lunacy. The Chinese scholars I know are among the hardest working, most selfless people I've ever encountered. They want to contribute to our intellectual endeavors, and they make our research teams better.
U.S. Congress considers sweeping ban on Chinese collaborations
Researchers speak out against proposal that would bar funding for U.S. scientists working with Chinese partners or training Chinese students
www.science.org
November 14, 2025 at 1:04 PM
This is lunacy. The Chinese scholars I know are among the hardest working, most selfless people I've ever encountered. They want to contribute to our intellectual endeavors, and they make our research teams better.
I swear, the only time California clear skies would have been appreciated is the day that we get clouds and rain 🥲 #AuroraBorealis #AtThisTime #InThisPartOfTheCountry #LocalizedEntirelyInYourKitchen
November 13, 2025 at 2:28 PM
I swear, the only time California clear skies would have been appreciated is the day that we get clouds and rain 🥲 #AuroraBorealis #AtThisTime #InThisPartOfTheCountry #LocalizedEntirelyInYourKitchen
Reposted by ChunnyD
We taught a quantum computer to learn from its own mistakes-- without stopping.
Our RL framework repurposes QEC detection events as learning signals to stabilize the system.
Result: Improved Logical Error Rates for both Surface and Color codes on Willow!
see arxiv: arxiv.org/abs/2511.08493
Our RL framework repurposes QEC detection events as learning signals to stabilize the system.
Result: Improved Logical Error Rates for both Surface and Color codes on Willow!
see arxiv: arxiv.org/abs/2511.08493
November 12, 2025 at 4:44 AM
We taught a quantum computer to learn from its own mistakes-- without stopping.
Our RL framework repurposes QEC detection events as learning signals to stabilize the system.
Result: Improved Logical Error Rates for both Surface and Color codes on Willow!
see arxiv: arxiv.org/abs/2511.08493
Our RL framework repurposes QEC detection events as learning signals to stabilize the system.
Result: Improved Logical Error Rates for both Surface and Color codes on Willow!
see arxiv: arxiv.org/abs/2511.08493
It's a fantastic paper - one of my labmates went through it for a journal club, and quickly applied the techniques to our #fluxonium qubits. Within three days, we saw both IIR and FIR effects, and implemented predistortion with the #QICK.
Check out our newest paper "Calibrating magnetic flux control in superconducting circuits by compensating distortions on timescales from nanoseconds up to tens of microseconds" published in the @apsphysics.bsky.social
journal @physrevresearch.bsky.social 7, 043142 (2025).
[3/7]
journal @physrevresearch.bsky.social 7, 043142 (2025).
[3/7]
November 8, 2025 at 5:23 PM
It's a fantastic paper - one of my labmates went through it for a journal club, and quickly applied the techniques to our #fluxonium qubits. Within three days, we saw both IIR and FIR effects, and implemented predistortion with the #QICK.
Reposted by ChunnyD
Berg's got a good thread on Watson. Dude was a human, flawed as any. Science is not the singular work of one single flawed human. We'd never make progress if that was the case. 🧪
Bluetorial-Jim Watson
I met Jim Watson a few times but did not know him well. However, I was greatly influenced by his book “The Double Helix”. He was a complicated human being with some very, very bad features, but some good contributions.
What follows is my personal perspective.
1/41
I met Jim Watson a few times but did not know him well. However, I was greatly influenced by his book “The Double Helix”. He was a complicated human being with some very, very bad features, but some good contributions.
What follows is my personal perspective.
1/41
a cartoon says hey everybody an old man 's talking while bart simpson looks on
ALT: a cartoon says hey everybody an old man 's talking while bart simpson looks on
media.tenor.com
November 8, 2025 at 3:29 PM
Berg's got a good thread on Watson. Dude was a human, flawed as any. Science is not the singular work of one single flawed human. We'd never make progress if that was the case. 🧪
Reposted by ChunnyD
did you know the Mountain Goats have a new album out today and you can buy it or stream it and dance to it in your living room or while driving or on the subway and it's a whole vibe? well now you know that 30tgrs.ffm.to/ttfafpb
The Mountain Goats - Through This Fire Across from Peter Balkan
Choose your preferred music service
30tgrs.ffm.to
November 7, 2025 at 1:28 PM
did you know the Mountain Goats have a new album out today and you can buy it or stream it and dance to it in your living room or while driving or on the subway and it's a whole vibe? well now you know that 30tgrs.ffm.to/ttfafpb
New potential metaphor - if classical computers are cars, then quantum computers are rockets. You could, in theory, take a rocket to get to work, but it would be kinda terrible all around. But, it would be really really hard to drive to the moon, and damn near impossible to drive to Alpha Centauri
November 6, 2025 at 10:06 PM
New potential metaphor - if classical computers are cars, then quantum computers are rockets. You could, in theory, take a rocket to get to work, but it would be kinda terrible all around. But, it would be really really hard to drive to the moon, and damn near impossible to drive to Alpha Centauri
Reposted by ChunnyD
Here's the full preprint.
Feel free to write me if you want any additional analyses in the final version!
arxiv.org/abs/2510.25417
Feel free to write me if you want any additional analyses in the final version!
arxiv.org/abs/2510.25417
Shifts in U.S. Social Media Use, 2020-2024: Decline, Fragmentation, and Enduring Polarization
Using nationally representative data from the 2020 and 2024 American National Election Studies (ANES), this paper traces how the U.S. social media landscape has shifted across platforms, demographics,...
arxiv.org
October 30, 2025 at 8:09 AM
Here's the full preprint.
Feel free to write me if you want any additional analyses in the final version!
arxiv.org/abs/2510.25417
Feel free to write me if you want any additional analyses in the final version!
arxiv.org/abs/2510.25417
Reposted by ChunnyD
jasmi.news/p/ai-friends... This is very good, and close in some ways to the Fourcade and @kjhealy.co account of social media, under which it's co-constituted by users rather than being forced on them.
AI friends too cheap to meter
“Let me date my chatbot I’m almost 30 and doing well”
jasmi.news
October 27, 2025 at 3:28 PM
jasmi.news/p/ai-friends... This is very good, and close in some ways to the Fourcade and @kjhealy.co account of social media, under which it's co-constituted by users rather than being forced on them.
@jonbois.bsky.social is my favorite sports-scifi-stastician-documentarian, and this interview helps capture some of that. Thank you for teaching me how to look for stories everywhere, Jon. www.brightwalldarkroom.com/2025/10/17/d...
Dare to Be Stupid: An Interview with Jon Bois & Alex Rubenstein
In their (hi)stories of successful losers as well as all the winners who fail perfectly, Jon Bois and Alex Rubenstein find our most human shapes.
www.brightwalldarkroom.com
October 26, 2025 at 6:16 PM
@jonbois.bsky.social is my favorite sports-scifi-stastician-documentarian, and this interview helps capture some of that. Thank you for teaching me how to look for stories everywhere, Jon. www.brightwalldarkroom.com/2025/10/17/d...
"You can only critically assess the output of an AI chatbot if you have the skills to do so, and you don’t develop these skills by using #AI." Thought-provoking reporting on AI in #Academia, featuring researchers from @archeougent.bsky.social
Belgian AI scientists are advocating *against* the use of AI in academia. “If independent thinking is no longer encouraged at university, where would it?” apache.be/2025/10/24/b...
Belgian AI scientists resist the use of AI in academia
Several AI scientists have published an open letter calling for a ban on AI use by students.
apache.be
October 25, 2025 at 6:39 PM
"You can only critically assess the output of an AI chatbot if you have the skills to do so, and you don’t develop these skills by using #AI." Thought-provoking reporting on AI in #Academia, featuring researchers from @archeougent.bsky.social
Reposted by ChunnyD
Humans of Bluesky! I want your questions, please.
Let me explain.
I like writing explainers about things like: What colors do bees see? Do bugs fart? How long can viruses survive in a dead body? What's the difference between hemp and marijuana?
But my brain is wrung dry. I need questions! 🧪🧵
Let me explain.
I like writing explainers about things like: What colors do bees see? Do bugs fart? How long can viruses survive in a dead body? What's the difference between hemp and marijuana?
But my brain is wrung dry. I need questions! 🧪🧵
October 22, 2025 at 5:34 PM
Humans of Bluesky! I want your questions, please.
Let me explain.
I like writing explainers about things like: What colors do bees see? Do bugs fart? How long can viruses survive in a dead body? What's the difference between hemp and marijuana?
But my brain is wrung dry. I need questions! 🧪🧵
Let me explain.
I like writing explainers about things like: What colors do bees see? Do bugs fart? How long can viruses survive in a dead body? What's the difference between hemp and marijuana?
But my brain is wrung dry. I need questions! 🧪🧵
Played a rousing round of "do my friends hate me or do i just need to go to sleep" yesterday! Happy to report that "sleep" won, hands down. Hoping for no more rematches this week... #Mulaney
a man in a suit and tie is singing into a microphone
ALT: a man in a suit and tie is singing into a microphone
media.tenor.com
October 22, 2025 at 2:22 PM
Played a rousing round of "do my friends hate me or do i just need to go to sleep" yesterday! Happy to report that "sleep" won, hands down. Hoping for no more rematches this week... #Mulaney
Reposted by ChunnyD
To add needed context, Isaac Newton was an obscure English scientist born on Christmas Day (Julian calendar) in 1642. He wrote a book, “Observations on Daniel and The Apocalypse of St. John” in 1733.
He wrote several more books on a couple of other subjects. He also poked himself in the eye.
He wrote several more books on a couple of other subjects. He also poked himself in the eye.
I don’t think the subject of beautiful scientific art is just biological.
A plate still bound inside my 1794 copy of “Astronomy Explained Upon Sir Isaac Newton's Principles” by Scottish astronomer James Ferguson, a book that helped simplify Newtonian mechanics for a general audience #Sciart
📚💙 🔭
A plate still bound inside my 1794 copy of “Astronomy Explained Upon Sir Isaac Newton's Principles” by Scottish astronomer James Ferguson, a book that helped simplify Newtonian mechanics for a general audience #Sciart
📚💙 🔭
October 21, 2025 at 6:57 PM
To add needed context, Isaac Newton was an obscure English scientist born on Christmas Day (Julian calendar) in 1642. He wrote a book, “Observations on Daniel and The Apocalypse of St. John” in 1733.
He wrote several more books on a couple of other subjects. He also poked himself in the eye.
He wrote several more books on a couple of other subjects. He also poked himself in the eye.
Reposted by ChunnyD
The Simon-Mandelbrot dispute.
Here is how it was done in the old days when scholarly disputes were handled slowly (over 8 years!) and in peer reviewed journals (with exciting titles), rather than in snappy and rude online forums.
Here is how it was done in the old days when scholarly disputes were handled slowly (over 8 years!) and in peer reviewed journals (with exciting titles), rather than in snappy and rude online forums.
June 23, 2025 at 12:38 AM
The Simon-Mandelbrot dispute.
Here is how it was done in the old days when scholarly disputes were handled slowly (over 8 years!) and in peer reviewed journals (with exciting titles), rather than in snappy and rude online forums.
Here is how it was done in the old days when scholarly disputes were handled slowly (over 8 years!) and in peer reviewed journals (with exciting titles), rather than in snappy and rude online forums.
Reposted by ChunnyD
This is probably the highest-effort one, from a student who also works in my group. I'm so proud
October 17, 2025 at 11:00 PM
This is probably the highest-effort one, from a student who also works in my group. I'm so proud
October 17, 2025 at 5:17 PM
Reposted by ChunnyD
“Now Scientific American has updated and re-released what it calls the “classic graphic” that shows that a human on a bicycle—able to coast, or freewheel, without pedaling—remains the world’s most energy effecient traveler.” @carltonreid.com on the re-release of the iconic graph in @forbes.com.
October 17, 2025 at 12:52 PM
“Now Scientific American has updated and re-released what it calls the “classic graphic” that shows that a human on a bicycle—able to coast, or freewheel, without pedaling—remains the world’s most energy effecient traveler.” @carltonreid.com on the re-release of the iconic graph in @forbes.com.
Reposted by ChunnyD
I kinda feel like I'm shouting into the void on Bluesky, but it's a nice, relaxing void - much better than Nietzche's abyss, and significantly calmer than the dumpster fire of Twitter. 7/10, would recommend.
October 17, 2025 at 2:45 PM
I kinda feel like I'm shouting into the void on Bluesky, but it's a nice, relaxing void - much better than Nietzche's abyss, and significantly calmer than the dumpster fire of Twitter. 7/10, would recommend.
Reposted by ChunnyD
UC Berkeley Physics is looking for a tenure-track Assistant Professor in Theoretical Atomic Physics — an amazing opportunity to join our dynamic AMO/Quantum community. If interested 👉 aprecruit.berkeley.edu/JPF05147
Assistant Professor-Atomic Physics Theory - Department of Physics
University of California, Berkeley is hiring. Apply now!
aprecruit.berkeley.edu
October 16, 2025 at 8:08 PM
UC Berkeley Physics is looking for a tenure-track Assistant Professor in Theoretical Atomic Physics — an amazing opportunity to join our dynamic AMO/Quantum community. If interested 👉 aprecruit.berkeley.edu/JPF05147
Reposted by ChunnyD
Apparently Bluesky is seeing an influx of new users. Welcome!
If you're interested in science, journalism, and/or science writing, here are a bunch of folks worth following.
go.bsky.app/7Z8u31b
If you're interested in science, journalism, and/or science writing, here are a bunch of folks worth following.
go.bsky.app/7Z8u31b
October 16, 2025 at 12:26 PM
Apparently Bluesky is seeing an influx of new users. Welcome!
If you're interested in science, journalism, and/or science writing, here are a bunch of folks worth following.
go.bsky.app/7Z8u31b
If you're interested in science, journalism, and/or science writing, here are a bunch of folks worth following.
go.bsky.app/7Z8u31b
"Honey, the physicists are at it again!"
In early grad school, we made fun of overeager physicists who would simplify everything into an Ising model. See here for the skit (youtu.be/vidRJTfNYyk?...), and here for the Real paper modeling #Covid as an #IsingModel www.sciencedirect.com/science/arti...
In early grad school, we made fun of overeager physicists who would simplify everything into an Ising model. See here for the skit (youtu.be/vidRJTfNYyk?...), and here for the Real paper modeling #Covid as an #IsingModel www.sciencedirect.com/science/arti...
Forget the year 2021
YouTube video by Forget the Year 2021
youtu.be
October 16, 2025 at 3:20 PM
"Honey, the physicists are at it again!"
In early grad school, we made fun of overeager physicists who would simplify everything into an Ising model. See here for the skit (youtu.be/vidRJTfNYyk?...), and here for the Real paper modeling #Covid as an #IsingModel www.sciencedirect.com/science/arti...
In early grad school, we made fun of overeager physicists who would simplify everything into an Ising model. See here for the skit (youtu.be/vidRJTfNYyk?...), and here for the Real paper modeling #Covid as an #IsingModel www.sciencedirect.com/science/arti...