Jake Xuereb
@curlyqubit.bsky.social
300 followers 850 following 97 posts
🇲🇹 📍🇦🇹 // Quantum Physics PhD student thinking thermodynamically @quitphysics.info // Founder @qalypsoschool // Startups, music and running elsewhere in spacetime.
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curlyqubit.bsky.social
I am learning so much about learning
curlyqubit.bsky.social
105 new submission in 1 day.

"2 arxiv submissions a year, those are rookie numbers in this racket"

Still waiting for an argument for how this rate of production benefits us or science at large.
curlyqubit.bsky.social
Quite cool to see this error correction angle! Nice workl
curlyqubit.bsky.social
Amazing to see the work of @itsmealeale.bsky.social and Partyk L Bartosik highlighted like this.

Having followed it as it was written and knowing the hard work that was poured into it, really brings a smile to one's face to see it highlighted.

Yes to detecting entanglement using thermodynamics!
A Thermometer for Measuring Quantumness | Quanta Magazine
“Anomalous” heat flow, which at first appears to violate the second law of thermodynamics, gives physicists a way to detect quantum entanglement without destroying it.
www.quantamagazine.org
curlyqubit.bsky.social
How long do we have to keep pretending that studying random unitaries teaches us about black holes?
curlyqubit.bsky.social
Good first Q (what part of community do you identify with)

I wanna know what the community expects of different author positions and also from people in different roles PIs, post docs, etc

+ what do people want ideally

Ofc these are fluid and vary project to project but maybe there are trends!
curlyqubit.bsky.social
Considering creating an anonymous google form survey for researcher in QInfo with questions on what roles collaborators have in projects.

E.g. What roles does a last author have in a project vs What roles does a first author have

Would you fill it out? What questions would be interested in?
curlyqubit.bsky.social
In this sense we agree because the probability of which outcome is "actualised" is due to the Born rule. And how to get that out of your theory is i think the hard part.

Shout out to the great Tony Short who gave this a go

quantum-journal.org/papers/q-202...
Probability in many-worlds theories
Anthony J. Short, Quantum 7, 971 (2023). We consider how to define a natural probability distribution over worlds within a simple class of deterministic many-worlds theories. This can help us understa...
quantum-journal.org
curlyqubit.bsky.social
I think any process that makes the information on the diagonal of a quantum states "easier to access" requires decoherence. One could then ask where does this decoherence stem from, randomness or some entropically motived argument.
curlyqubit.bsky.social
Why? Measurement is the dynamical objectification of the classical information of quantum states into larger and larger systems.

One can get this dynamics randomly a la Zurek or thermodynamically arxiv.org/abs/2302.11253

I think explaining why we observe the Born rule is the hard part.
Quantum measurements and equilibration: the emergence of objective reality via entropy maximisation
Textbook quantum physics features two types of dynamics, reversible unitary dynamics and irreversible measurements. The latter stands in conflict with the laws of thermodynamics and has evoked debate ...
arxiv.org
curlyqubit.bsky.social
More collage art about Quantun Information please
loglog.wtf
nate @loglog.wtf · 24d
I made a zine about quantum gates and distributed it at @unitary.foundation's unitaryCON this two weeks ago.

check it out :) and lemme know what you think

nates.place/static/ng01....
cover of zine called nates gates created on a typewriter
curlyqubit.bsky.social
Please do add this to the scirate comment thread to reinvigorate the discussion over there.

And thanks for the patience for actually going through a paper and thinking through its core assumptions and reporting back.

I think this is really lacking in our scientific culture

🙌
curlyqubit.bsky.social
Erratum : Poster 55 ☺️
curlyqubit.bsky.social
Good morning from TQC 2025 in Bengalore IISC 🇮🇳

I'm here spreading some Quantum Thermo propaganda to the Algo, Crypto people - pass by poster 72 if interested in (arxiv.org/abs/2505.15887)

Bengalore has been overwhelming, awesome, beautiful and tasty so far
curlyqubit.bsky.social
Congratulations @perp-waterfall.bsky.social ! Your PhD journey and the results you've obtained during that journey are definitely inspiring.

All the best for what's to come ✌️
curlyqubit.bsky.social
I think the number of single author arXiv postings on quant-ph is steadily increasing. E.g. today 7/48 postings were single author.

Has anyone else been noticing this?

Surely it's due to GPTs being good paper writing assitants, right?
curlyqubit.bsky.social
Anyone else headed to TQC in Bengaluru and hanging out a bit the week after?

Do send a message if yes and you're up for hanging out after the conference. 😄

tqc-conference.org
TQC Conference 2025 | Theory of Quantum Computation, Communication and Cryptography
tqc-conference.org
curlyqubit.bsky.social
(8/n) I can't rly know how these works built off eachother without speaking to the authors and I've def missd other works - take what I say with a touch of salt.

What's certain is; this is an exciting area and we should take a look at the optomech golden oldies ✌️

Thanks for hanging out ❤️
curlyqubit.bsky.social
(7/n) Now, 3 weeks ago Konstantin Beyer, Kim who's still around from the first paper and Pikowski have shown how to verify quantumness of an inaccessible object using only a single quantum probe.

To do this, they must act sequentially and with access to a memory system.

arxiv.org/abs/2507.15588
curlyqubit.bsky.social
(6/n) The idea here is two drop two object simultaneously through two stern gerlach type interferometers then allowing them to interact via gravity during a brief free fall.

If gravity mediates entanglement between the two masses, it acts like the inaccessible mirror in the cavity, and is quantum!
curlyqubit.bsky.social
(5/n) This reinvigorates the experimental tests of the quantumness of gravity discussions leading to the spin entanglement witness experimental proposal of Bose et al (ft. Paternostro and Kim that have been with us since paper 1)

arxiv.org/abs/1707.06050
curlyqubit.bsky.social
(4/n) 10 yrs later Krisnanda, Zuppardo, Paternostro & Paterek generalize the idea: if two probes, which don’t talk directly, gain entanglement via a mediator, the mediator must be quantum.

They suggest this set up could be used as a way to test the quantumness of gravity.

arxiv.org/abs/1607.01140
curlyqubit.bsky.social
(3/n) The correlations between the two light modes which one can measure, can be used to infer correlations that build up between the inaccessible mirror and either of the cavity modes.

The idea is based on the monogamy of entanglement. You can't have AC entanglement without some AB at some point.
curlyqubit.bsky.social
(2/n) In 2007 Paternostro and an author list rivaling the avengers wanted to see if they could probe entanglement building up between light and an inaccessible mirror.

The trick : put the mirror in the middle of a cavity and shoot light at it from either side.

arxiv.org/abs/quant-ph...