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   Chuck Darwin (cdarwin@c.im)'s status on Friday, 28-Nov-2025 12:04:09 JST Chuck Darwin

   Seventeen years after the Large Hadron Collider switched on,
   particle physicists are realizing that they can use the collider to explore how information flows through quantum systems
   — a question at the foundations of quantum computing.

   The two possible spins of the quarks correspond to the 0 and 1 states of a qubit,
   a unit of quantum information.

   “It is treating the process of colliding things together and forming new particles as a quantum processor,”
   said Alan Barr, a physicist at the University of Oxford who works on the ATLAS experiment.

   “You can investigate a whole different set of questions that colliders were not really designed to do in the first place but are very capable of addressing

   In the 1990s, a quantum information breakthrough came in the proof of the Gottesman-Knill theorem.

   The theorem revealed that certain highly entangled quantum states
   — called stabilizer states
   — can be simulated just as efficiently on a classical computer as it can on a quantum computer.

   Create these states out of qubits, and you won’t find any speedup at all.

   In search of quantum advantage
   — the ability of a quantum computer to outperform classical computers on certain tasks
   — physicists began to look for entangled states that differed as much as possible from stabilizer states.

   These states earned the name magic states.
   (“It’s an appalling word,” said Martin White, but after 20 years, there’s probably no changing it now.)

   In 2014, physicists found the missing piece
   that gives magic states their quantum boost.

   The key is contextuality
   — a lesser-known feature of quantum mechanics.

   Contextuality says that the outcome of a quantum measurement will depend on the other properties that are being measured at the same time.

   The measured properties aren’t fixed and waiting to be discovered;
   they’re contextual.

   Stabilizer states are an exception to the rule
   — it’s possible to treat them as noncontextual and imagine that they have a full set of definite properties at any given time.

   But for magic states, there’s no getting around their contextuality,
   making them hard to simulate classically

   The main point of studying magic is to potentially improve quantum computers
   rather than reveal new insights about elementary particles.

   But the sensitive methods developed for doing such a detailed measurement led to something unexpected:

   The physicists observed that the top quark and anti-top quark were sometimes
   extra-entangled.

   In these cases, the quarks were binding strongly to form a single particle,
   an elusive state called toponium.

   Toponium was predicted in 1990
   but “was thought to be a too-subtle effect” for a collider such as the LHC to see, said Marcel Vos, a leader of the top quark research group at ATLAS.

   CMS and ATLAS posted their measurements of toponium in March and July, respectively

   https://www.quantamagazine.org/particle-physicists-detect-magic-at-the-large-hadron-collider-20251125/

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   Jackie 🍉🏳️‍⚧️☭ (burnoutqueen@todon.nl)'s status on Friday, 27-Jun-2025 15:20:10 JST Jackie 🍉🏳️‍⚧️☭

   in reply to

   I support democracy and socialism for all.

   In the idea of the Jewish and democratic state, something's gotta give.

   And I hate to say it, but Israel has chosen Jewishness over democracy, and the controversial prediction of Judeo-Nazism by Yeshayahu Leibowitz has become the truth.

   We are watching Gaza and the West Bank slowly being taken over by people who are, for a lack of a better phrase, hardcore genocidal fascists.

3. Embed this notice
   Michał "rysiek" Woźniak · 🇺🇦 (rysiek@mstdn.social)'s status on Tuesday, 08-Apr-2025 21:53:44 JST Michał "rysiek" Woźniak · 🇺🇦

   in reply to

   Oh and by the way, it's always the No JS Day on my bloggo as well.

   Once I re-enable CSS in a day or two, I invite you to click around and explore. Plenty of interactivity is possible with no JS at all.

   In fact, these two little side-projects of mine are pretty darn interactive, and use zero lines of JavaScript:

   (CW Donald Trump, but funny)
   https://rys.io/you-are-donald-trump/

   (CW map of Russian invasion of Ukraine)
   https://projects.rys.io/ukrainvasion/

   #WebDev

4. Embed this notice
   Laffy (gottalaff@mstdn.social)'s status on Saturday, 01-Mar-2025 06:02:43 JST Laffy

   in reply to

   @nitpicking No, that's now what @Wileymiller or I did at all.

   In fact, I said he was politically savvy. But he's also exactly as his own Cabinet members said in 2020: A moron. He's stupid. We don't give him credit for being "smart." And if you ever read my feed, I've always said we shouldn't underestimate him. He's still a moron. Clear now #ReplyGuy?

   @Salty

   cc: @Snowshadow Maybe you could say it better. I'm done here.

5. Embed this notice
   The Seven Voyages Of Steve (sinbad@mastodon.gamedev.place)'s status on Thursday, 09-Jan-2025 02:41:33 JST The Seven Voyages Of Steve

   Man, figuring out how to manually position particles in Niagara was a huge PITA. Docs mention Niagara Data Channels and Niagara Data Interfaces but so much of it is out of date and / or incomplete it's kinda *worse* than it not being there at all.

   In the end I discovered I could do it just with user array parameters indexed with particle IDs, which *become* data interfaces, something never mentioned in the docs so making the connection was extremely hard. I feel a blog post coming on

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   toyotatime@merovingian.club's status on Tuesday, 10-Dec-2024 02:25:44 JST ToyotaTime

   in reply to

   @whiteman_ China isn't the enemy, and they aren't united with jews at all.

   In fact, the jews are angry that the Chinese won't allow them to influence their ruling class.

   So the jews push propaganda like this to make the Chinese out as evil.

   Jews do this to Russians as well.

   The Chinese are actually based on the JQ