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Daniel González

@danielgc25.bsky.social

160 followers 150 following 23 posts

Diagonalizo matrices | Ramon y Cajal fellow @ IFT (UAM-CSIC) | Previously @ Harvard, IQOQI, ICFO & MPQ

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Daniel González @danielgc25.bsky.social · Nov 21

Now that the #quantum community is getting back together, I wanted to share here our last project 📃

This was a very nice theory-experiment collaboration, where we used Quera's Rydberg quantum simulator ⚛️ 💻 to observe string breaking 💥 on a (2+1)D lattice gauge theory!

arxiv.org/abs/2410.16558

Observation of string breaking on a (2 + 1)D Rydberg quantum simulator

Lattice gauge theories (LGTs) describe a broad range of phenomena in condensed matter and particle physics. A prominent example is confinement, responsible for bounding quarks inside hadrons such as p...

arxiv.org

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Reposted by Daniel González

Nature @nature.com · Jun 6

Two-dimensional quantum platforms have simulated a process in particle physics called string breaking that generates matter–antimatter pairs

https://go.nature.com/4449MZ9

Simulation of matter–antimatter creation on quantum platforms

Two-dimensional quantum platforms have simulated a process in particle physics called string breaking that generates matter–antimatter pairs.

go.nature.com

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Reposted by Daniel González

Nature @nature.com · Jun 6

Two quantum-simulation experiments make a step towards understanding the forces between elementary particles

https://go.nature.com/3HrgpvP

Quantum computers tackle unexplored particle physics

Two quantum-simulation experiments make a step towards understanding the forces between elementary particles.

go.nature.com

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Reposted by Daniel González

IQOQI Innsbruck @iqoqi.bsky.social · Jun 5

An international team led by Peter Zoller together with #QuEra Computing has directly observed “string breaking” in a two-dimensional analog #quantum #simulator 🧲⚡️⚛

Read more: iqoqi.at/.../1006-str....

👉 www.nature.com/articles/s41... @nature.com

📸: Harald Ritsch @fwf-at.bsky.social #physics

A blue and a red sphere spinning out of the dark

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Daniel González @danielgc25.bsky.social · Apr 23

Still one week to apply!

Daniel González @danielgc25.bsky.social · Mar 27

I am very happy to announce that I will soon join @iftuamcsic.bsky.social as a Ramon y Cajal Fellow ‼️

I am also offering a PhD position on "Quantum Algorithms for High-Energy Physics" ⚛️ Deadline is April 30 and the details can be found here: www.gonzalez-cuadra.com/open-positions

Please share!

González-Cuadra Group @ IFT - Open positions

PhD position in Quantum Algorithms for High-Energy Physics (currently open)

www.gonzalez-cuadra.com

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Reposted by Daniel González

Quantiki @quantiki.bsky.social · Apr 1

PhD position in Quantum Algorithms for High-Energy Physics at the Institute for Theoretical Physics in Madrid

www.quantiki.org/position/phd...

PhD position in Quantum Algorithms for High-Energy Physics at the Institute for Theoretical Physics in Madrid | Quantiki

www.quantiki.org

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Reposted by Daniel González

Información y Tecnologías Cuánticas en España @qipcspain.bsky.social · Mar 28

PhD position. PhD position in Quantum Algorithms for High-Energy Physics at Institute for Theoretical Physics (UAM-CSIC) https://www.cuantica2025.es/job-market

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Daniel González @danielgc25.bsky.social · Mar 27

González-Cuadra Group @ IFT - Open positions

PhD position in Quantum Algorithms for High-Energy Physics (currently open)

www.gonzalez-cuadra.com

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Reposted by Daniel González

Quanta Magazine @quantamagazine.bsky.social · Feb 27

Why were the first drawings of neurons defaced?

🧵1/9

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Reposted by Daniel González

Álvaro M. Alhambra @alvalhambra.bsky.social · Feb 21

We are excited to announce the workshop "Entangle This VI" that we are organizing on quantum science and technology in Madrid, 15th-19th September 2025. Registration and abstract submission is currently open! indico.ift.uam-csic.es/event/27/

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Reposted by Daniel González

Leah Stokes @leahstokes.bsky.social · Jan 9

Cannot stop thinking about how Octavia Butler wrote a book in 1993 about climate change. It opens with deadly fires in LA in 2025. In the story, a fascist President has just won office with the campaign slogan "Make America Great Again."

She was a modern day Nostradamus. If only we'd listened.

The cover of the book Parable of the Sower.

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Reposted by Daniel González

Juan José García-Ripoll @jjgarciaripoll.bsky.social · Jan 1

Amusing story by @teorth.bsky.social on Mastodon about paper rejections
mathstodon.xyz/@tao/1137212...

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Reposted by Daniel González

The Schrodinger cat's Post @schrodcatpost.bsky.social · Dec 23

Constructing a fermionic quantum processor can bypass certain challenges associated with qubit mapping. However, the implementation of error correction for such processors is still uncertain. A recent article has explored this issue.
arxiv.org/abs/2412.16081

Error-corrected fermionic quantum processors with neutral atoms

Many-body fermionic systems can be simulated in a hardware-efficient manner using a fermionic quantum processor. Neutral atoms trapped in optical potentials can realize such processors, where non-loca...

arxiv.org

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Daniel González @danielgc25.bsky.social · Dec 20

The Lukin theory (sub)group wishes you a happy winter holidays! 🎄⚛️☃️

Reposted by Daniel González

Iftach Yakar @quantumyakar.bsky.social · Dec 4

Measuring stabilizers in a quantum error correcting code

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Reposted by Daniel González

Katy's Shit Cartoons @cartoons.katymontgomerie.com · Nov 28

Atoms are binary. They are either intended to be hydrogen or helium. We can't just scrap this worldview just because of a handful of exceptions

Pie chart:
74% hydrogen
25% helium
1% other (in tiny font)

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Daniel González @danielgc25.bsky.social · Dec 1

Yes, please!

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Daniel González @danielgc25.bsky.social · Nov 23

I thought by now I would be over these kinds of things, but I just saw mejillones en escabeche in a korean supermarket in Cambridge, Massachusetts, and 🥹🥹

*** cries in galician ***

Daniel González @danielgc25.bsky.social · Nov 23

Pretty cool results! It's great to see how quantum info tools (tensor networks in this case) are shedding new light into high-energy physics phenomena.

Hopefully soon 😬 quantum simulators will be able to target more complicated field theories and higher dimensions 🤞🏼

John Preskill @preskill.bsky.social · Nov 22

I am very proud of our new paper on simulations of scattering processes in (1+1)-dimensional quantum field theory. All the hard work was done by my co-authors Raghav Jha, Ash Milsted, Dominik Neuenfeld, and Pedro Vieira.
arxiv.org/abs/2411.13645

Real-Time Scattering in Ising Field Theory using Matrix Product States

We study scattering in Ising Field Theory (IFT) using matrix product states and the time-dependent variational principle. IFT is a one-parameter family of strongly coupled non-integrable quantum field...

arxiv.org

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Daniel González @danielgc25.bsky.social · Nov 21

I want to finish by thanking my amazing collaborators. This was a long and challenging project, and it could not have succeed without their help and support 🫶

Daniel González @danielgc25.bsky.social · Nov 21

Personally, this was a very special project, since I started thinking how to simulate similar gauge theories during my master thesis.

During the last decade, Rydberg simulators have developed tremendously, allowing us to bring these theoretical ideas to an experimental reality.

a glowing atom with a black background

ALT: a glowing atom with a black background

media.tenor.com

Daniel González @danielgc25.bsky.social · Nov 21

In summary, our experiments confirm string breaking in (2+1)D both in equilibrium and non-equilibrium.

These results nicely complement the very recent observations of similar phenomena with superconducting qubits and trapped ions:

arxiv.org/abs/2409.17142
arxiv.org/abs/2410.13815

Daniel González @danielgc25.bsky.social · Nov 21

Finally, we quench these string states and investigate the dynamics of string breaking.

We observe a high-order process where the initial string maximally breaks when it has the same energy as the broken string. We characterize this resonance through many-body spectroscopy.

Daniel González @danielgc25.bsky.social · Nov 21

Moreover, strings in (2+1)D can fluctuate between different shapes, and we indeed observe all of them in the states we prepare.

Daniel González @danielgc25.bsky.social · Nov 21

We map out the phase diagram of the gauge theory by preparing the ground state adiabatically.

We observe how, as we increase the Rydberg interactions (and thus the confining potential), the probability of the broken string dominates, signalling string breaking in equilibrium.

Daniel González @danielgc25.bsky.social · Nov 21

In the experiment, we can prepare and measure states corresponding to both unbroken and broken string configurations 👇