John Watrous
@johnwatrous.bsky.social
Quantum computing educator and researcher. I like math, computer games, and dub techno.
That one episode where they diagonalize is great. So many other shows try to replicate it.
July 29, 2025 at 5:43 PM
That one episode where they diagonalize is great. So many other shows try to replicate it.
It does not. I resigned my faculty position at the end of 2021 and haven't taught an actual course with registered students since then.
But isn't any course unfinished by definition so long as one is teaching it?
But isn't any course unfinished by definition so long as one is teaching it?
July 17, 2025 at 11:32 AM
It does not. I resigned my faculty position at the end of 2021 and haven't taught an actual course with registered students since then.
But isn't any course unfinished by definition so long as one is teaching it?
But isn't any course unfinished by definition so long as one is teaching it?
With Chris Knight, Val Kilmer demonstrated that a character can simultaneously be incredibly smart, cool, fun, and genuinely kind. Real Genius was a special movie.
April 2, 2025 at 1:48 PM
With Chris Knight, Val Kilmer demonstrated that a character can simultaneously be incredibly smart, cool, fun, and genuinely kind. Real Genius was a special movie.
This reminds me of a QIP talk years ago where someone introduced a technique on some thing or another by some new name. Reinhard Werner was sitting nearby and he muttered, not quite under his breath, "It's called matrix multiplication."
January 7, 2025 at 3:54 PM
This reminds me of a QIP talk years ago where someone introduced a technique on some thing or another by some new name. Reinhard Werner was sitting nearby and he muttered, not quite under his breath, "It's called matrix multiplication."
Where to begin? Writing letters, email, reports, trip planning, travel claims, presentations, cleaning, organizing, doing laundry, shovelling snow, trying to get this classical computer in front of me to function properly. Probably not all that much different from any other theorist.
January 2, 2025 at 9:53 PM
Where to begin? Writing letters, email, reports, trip planning, travel claims, presentations, cleaning, organizing, doing laundry, shovelling snow, trying to get this classical computer in front of me to function properly. Probably not all that much different from any other theorist.
Of course, in an ideal world, each paper would receive multiple carefully written reviews that explain the decision in detail. But recognize that this means even more work for others. A preferable solution in my view: people should stop writing so many damn papers!
December 9, 2024 at 4:01 PM
Of course, in an ideal world, each paper would receive multiple carefully written reviews that explain the decision in detail. But recognize that this means even more work for others. A preferable solution in my view: people should stop writing so many damn papers!
I think this is it right here. I have felt the frustration of poor reviews — but I've also chaired the QIP PC and served many times, and it's a thankless monster of a job. Most papers will not make the cut for the simple reason that others are seen as stronger.
December 9, 2024 at 4:00 PM
I think this is it right here. I have felt the frustration of poor reviews — but I've also chaired the QIP PC and served many times, and it's a thankless monster of a job. Most papers will not make the cut for the simple reason that others are seen as stronger.
Making pizza turned out to be incredibly valuable: I still make pizza at home almost every week. Not so much for being a cashier, except maybe for developing empathy for cashiers. Customers can be pretty difficult, as I'm sure anyone who is or was a cashier knows very well.
December 8, 2024 at 8:54 PM
Making pizza turned out to be incredibly valuable: I still make pizza at home almost every week. Not so much for being a cashier, except maybe for developing empathy for cashiers. Customers can be pretty difficult, as I'm sure anyone who is or was a cashier knows very well.
Here's my work history:
Pizza maker
Grocery store cashier
Blockbuster Video cashier
Math tutor
Teaching/research assistant
Postdoc
Professor
IBM Quantum educator
I guess you took the faster route.
Pizza maker
Grocery store cashier
Blockbuster Video cashier
Math tutor
Teaching/research assistant
Postdoc
Professor
IBM Quantum educator
I guess you took the faster route.
December 8, 2024 at 7:18 PM
Here's my work history:
Pizza maker
Grocery store cashier
Blockbuster Video cashier
Math tutor
Teaching/research assistant
Postdoc
Professor
IBM Quantum educator
I guess you took the faster route.
Pizza maker
Grocery store cashier
Blockbuster Video cashier
Math tutor
Teaching/research assistant
Postdoc
Professor
IBM Quantum educator
I guess you took the faster route.
I believe this is because everyone is left-handed in Australia.
December 6, 2024 at 12:33 AM
I believe this is because everyone is left-handed in Australia.
Hang in there, they grow up. Before you know it you'll be back to normal gaming hours.
December 5, 2024 at 1:10 PM
Hang in there, they grow up. Before you know it you'll be back to normal gaming hours.
I edit source files in Emacs, run LaTeX from a terminal window, and let Skim auto-reload to see the results, everything local. Feeling like an old-school Gen Xer who mostly works alone. But then again, everything is working fine for me today.
December 3, 2024 at 7:59 PM
I edit source files in Emacs, run LaTeX from a terminal window, and let Skim auto-reload to see the results, everything local. Feeling like an old-school Gen Xer who mostly works alone. But then again, everything is working fine for me today.
I have not played it. It appears to be about 30 years old, which is pretty darn old for a video game. That's like, pre-Black Isle Studios old. Has it stood up this long? Not impossible — I still play Super Metroid on SNES when I visit my childhood home.
December 3, 2024 at 2:51 PM
I have not played it. It appears to be about 30 years old, which is pretty darn old for a video game. That's like, pre-Black Isle Studios old. Has it stood up this long? Not impossible — I still play Super Metroid on SNES when I visit my childhood home.
I did play Inscription. It was intriguing and fun, but I didn't love it — I guess I found the actual card game itself to be a bit dull and tedious at times.
December 3, 2024 at 2:31 PM
I did play Inscription. It was intriguing and fun, but I didn't love it — I guess I found the actual card game itself to be a bit dull and tedious at times.
In that case, yeah — this one is probably not for you.
(Not sure what to feel right now, having put several hundred hours into Civ 6.)
(Not sure what to feel right now, having put several hundred hours into Civ 6.)
December 1, 2024 at 10:08 PM
In that case, yeah — this one is probably not for you.
(Not sure what to feel right now, having put several hundred hours into Civ 6.)
(Not sure what to feel right now, having put several hundred hours into Civ 6.)