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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Published on: August 2, 2019

Commensurate and incommensurate 1D interacting quantum systems.

Andrea Di Carli¹, Christopher Parsonage¹, Arthur La Rooij¹

¹Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 0NG, United Kingdom.

Nature Communications

|January 11, 2024

Summary

Researchers used quantum-gas microscopes with dynamic light potentials to study 1D Bose systems. This method creates incommensurate states, enabling new insights into quantum simulation and atom transport.

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Area of Science:

Quantum Simulation
Atomic Physics
Condensed Matter Physics

Background:

Quantum-gas microscopes achieve single-atom imaging resolution in optical lattices.
Engineered light potentials are crucial for quantum simulators' versatility.

Purpose of the Study:

To study commensurate and incommensurate 1D systems of interacting bosonic Rubidium (Rb) atoms.
To investigate atom transport and compressibility in incommensurate systems analogous to doped insulators.

Main Methods:

Utilizing dynamically varying microscopic light potentials in a quantum-gas microscope.
Preparing a commensurate system and deterministically creating an incommensurate system by adjusting potential barriers.
Characterizing systems via particle/hole distribution, lattice filling, interaction strength, and probing mobility with a bias potential.

Main Results:

Demonstrated creation of incommensurate systems by reducing lattice sites while maintaining atom number.
Analyzed particle and hole distributions to understand system properties.
Probed atom mobility under applied bias potential.

Conclusions:

Established a method for preparing low-entropy states with controlled filling in optical lattices.
Opened new avenues for studying quantum phenomena in engineered lattice potentials.
Provided a foundation for advanced quantum simulation experiments.