Daniel González
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danielgc25.bsky.social
Daniel González
@danielgc25.bsky.social
Diagonalizo matrices | Ramon y Cajal fellow @ IFT (UAM-CSIC) | Previously @ Harvard, IQOQI, ICFO & MPQ
Reposted by Daniel González
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
December 23, 2024 at 2:09 PM
Yes, please!
December 1, 2024 at 1:57 PM
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 🫶
November 21, 2024 at 3:52 AM
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
November 21, 2024 at 3:52 AM
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
November 21, 2024 at 3:52 AM
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.
November 21, 2024 at 3:52 AM
Moreover, strings in (2+1)D can fluctuate between different shapes, and we indeed observe all of them in the states we prepare.
November 21, 2024 at 3:52 AM
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.
November 21, 2024 at 3:52 AM
In the experiment, we can prepare and measure states corresponding to both unbroken and broken string configurations 👇
November 21, 2024 at 3:52 AM