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Two-Dimensional Programmable Tweezer Arrays of Fermions.

Zoe Z Yan¹, Benjamin M Spar¹, Max L Prichard¹

¹Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.

Physical Review Letters

|September 30, 2022

Summary

This summary is machine-generated.

Researchers created arrays of lithium-6 atoms for quantum simulations. They demonstrated a correlated state in a Hubbard plaquette, a key step towards programmable fermionic quantum simulators.

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Area of Science:

Atomic physics
Quantum simulation
Condensed matter physics

Background:

Fermionic quantum simulation requires precise control over individual atoms.
Creating low-entropy initial states is crucial for accurate quantum simulations.
Optical tweezers offer a versatile platform for trapping and manipulating atoms.

Purpose of the Study:

To develop a method for preparing and controlling arrays of fermionic atoms.
To demonstrate the feasibility of realizing a programmable fermionic quantum simulator.
To create correlated quantum states for simulation purposes.

Main Methods:

Utilizing optical tweezers to create two-component arrays of fermionic ^{6}Li atoms.
Employing a stroboscopic technique for geometric configuration with minimal heating.
Implementing spin- and density-resolved readout for site-specific analysis.
Postselecting near-zero entropy initial states.

Main Results:

Successfully prepared tens of fermionic ^{6}Li atoms in optical tweezers.
Configured atomic arrays into various 2D geometries with negligible Floquet heating.
Demonstrated a correlated state in a two-by-two tunnel-coupled Hubbard plaquette.
Achieved full spin- and density-resolved readout of individual atomic sites.

Conclusions:

The developed techniques provide essential building blocks for programmable fermionic quantum simulators.
This work paves the way for simulating complex fermionic many-body systems.
Precise control and readout of fermionic atoms are achievable in optical tweezer arrays.