Guille DC
dc-guille.bsky.social
Guille DC
@dc-guille.bsky.social
Quantum physicist at CESGA
Reposted by Guille DC
Violation of Bell's inequality without entanglement. This looks like fascinating work: apparently the inequality can also be violated when quantum particles are simply indistinguishable.
www.arxiv.org/abs/2507.07756
Violation of Bell Inequality with Unentangled Photons
Violation of local realism via Bell inequality - a profound and counterintuitive manifestation of quantum theory that conflicts with the prediction of local realism - is viewed to be intimately linked...
www.arxiv.org
July 14, 2025 at 8:24 AM
Reposted by Guille DC
Oferta de empleo para el área de Proyectos - Cesga - Centro de Supercomputación de Galicia. Contratos de corta duración dirigidos a estudiantes de máster www.cesga.es/oferta-de-em...
Oferta de empleo para el área de Proyectos - Cesga - Centro de Supercomputación de Galicia
Cesga - Centro de Supercomputación de Galicia - Oferta de empleo para el área de Proyectos
www.cesga.es
June 30, 2025 at 7:02 PM
Reposted by Guille DC
go.bsky.app/75SvR2M - Who am I missing?

~got bored this afternoon, do forgive me. But on a serious note would love to know who I haven't discovered on here yet (or mistakenly omitted due to the sheer amount of people)
June 23, 2025 at 8:24 PM
Reposted by Guille DC
“Among articles stating that data was available upon request, only 17% shared data upon request.”
April 30, 2025 at 10:43 PM
Reposted by Guille DC
Nuestro computador cuántico #QMIO, disponible para grupos de investigación en Galicia y del CSIC desde mayo de 2024, estará ahora disponible también para grupos de todo el Estado en un hito sin precedentes impulsado por la @res-icts.bsky.social.

✍️Solicitudes en res.es hasta el 8 de mayo.
April 23, 2025 at 7:09 AM
Reposted by Guille DC
Popes are chosen by God, making them the ultimate Dei hire
April 21, 2025 at 8:20 AM
Reposted by Guille DC
Renormalisation is a central concept in modern physics. It describes how the dynamics of a system change at different scales. A great way to understand and visualise renormalisation is the Ising model

(some math, but one can follow without it )

1/13
April 21, 2025 at 7:29 AM
Reposted by Guille DC
A tricky thing about modern society is that no one has any idea when they don’t die.

Like, the number of lives saved by controlling air pollution in America is probably over 200,000 per year, but the number of people who think their life was saved by controlling air pollution is zero.
April 7, 2025 at 4:13 AM
Reposted by Guille DC
Consider this a warning. Factoring small numbers is a bad benchmark. Because the key to factoring small numbers isn’t making the quantum computer "work well". That’s the key to factoring *large* numbers. For small numbers it's sufficient to generate a far-too-large circuit, and light the fuse.
April 1, 2025 at 10:33 PM
Reposted by Guille DC
This is a science video about quantum 🔊

(remix of @gid.cx feat. @acollierastro.bsky.social )
March 8, 2025 at 12:58 PM
Reposted by Guille DC
Rainy weekend project: condense 125 years of quantum physics into 1!

The "Quantum Year" calendar is interactive.

Feedback welcome.

#IYQ2025 #QuantumYear #QuantumComputing
2025 is NOT the Quantum Year — This is 👇
125 years of quantum physics condensed into a calendar year
csferrie.medium.com
January 11, 2025 at 5:22 AM
Reposted by Guille DC
Great timeline of quantum supremacy claims and refutations by Tom Wong on X.
x.com/thomasgwong/...
December 17, 2024 at 11:47 AM
Reposted by Guille DC
I just sat down in a chair, and was supported because of trillions of quantum-mechanical interactions between the particles in my butt and the particles in the seat. This lends credence to the notion that quantum computation occurs in many parallel universes, an idea first propo
December 14, 2024 at 12:12 AM
Reposted by Guille DC
This is a cool demonstration. You can think about how far the center of the coin has to go: it’s a circle with radius 2r (if r is the radius of the coin). The circumference is therefore 4πr, meaning a coin of circumference 2πr will have to do 2 rotations 🧪
Set two coins of same size next to each other & roll one against the other.

What seems intuitive is that making a circuit would involve 1 full rotation of the rolling coin, since the sides are matched in length.

In practice, it's exactly TWO rotations. Can you see why?
December 12, 2024 at 11:49 PM
Reposted by Guille DC
Googles claim that their result "lends credence to the notion that quantum computation occurs in many parallel universes" is nonsense, because their results are perfectly well explained by quantum mechanics independent of how you interpret it.

4/5
December 12, 2024 at 3:49 PM