Distributing entanglement at the quantum speed limit in Rydberg chains
Jun 24, 2025·
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0 min read
Kent Ueno
Alexandre cooper
Abstract
We numerically study the transport of Rydberg excitations in chains of neutral atoms. We realize an effective flip-flop interaction using off-resonant driving fields. By tuning the relative distances between atoms and applying atom-selective detuning fields, we realize the perfect transport condition. This condition enables the transfer of a single Rydberg excitation from one end of the chain to the other, allowing the distribution of entanglement across the chain at the quantum speed limit. Through numerical simulations, we identify the set of control parameters that maximize the transport probability for experimentally relevant parameters. We study the various competing trade-offs involved in the hierarchy of approximations used to map the native Rydberg spin model onto the effective model driving spin transport. Our results suggest that entanglement can be distributed over chains of more than fifty atoms spanning hundreds of microns at room temperature. This study informs the selection of parameters for the experimental realization of perfect transport in Rydberg chains, providing a new approach to distribute entanglement among distant atoms in quantum processors.
Type
Authors
Ph.D. Candidate
My main interests lie in realizing quantum simulations of many-body dynamics to inform the development of practical quantum technologies.
By capturing essential quantum behavior, quantum simulators can help narrow the search space for useful quantum phenomena
in areas like chemical reaction landscapes and novel quantum materials, accelerating both understanding and application.
Our team is developing a quantum simulator built from arrays of Rydberg atoms trapped in optical tweezers.
I’m involved across the full stack of the experiment — from designing and building the setup to operating and characterizing the system —
with the goal of performing programmable quantum simulations of many-body dynamics.
Outside of research, I enjoy playing soccer, discussing films, baking, and spending time with cats.
I’m just as happy to talk with you about the use-cases of quantum as I am to debate how AC Milan can get back to the top!