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An integrated atom array-nanophotonic chip platform with background-free imaging.

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Summary
This summary is machine-generated.

We developed a new method for imaging neutral atom arrays near photonic chips, achieving high-fidelity detection for quantum information processing. This breakthrough enables scalable quantum networks by integrating atom qubits with photonic interfaces.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Nanophotonics

Background:

  • Neutral atom arrays in optical tweezers are scalable platforms for quantum information processing and simulation.
  • Individual atoms can be used for quantum networking by emitting entangled photons.
  • Integrating atom arrays with photonic interfaces is challenging due to imaging difficulties near photonic devices.

Purpose of the Study:

  • To demonstrate a novel architecture for integrating neutral atom arrays with photonic chips.
  • To overcome the challenge of background noise and scattering from photonic devices during atom imaging.
  • To enable the development of distributed quantum computing architectures.

Main Methods:

  • Utilized an architecture combining up to 64 optical tweezers with a millimeter-scale photonic chip containing over 100 nanophotonic cavities.
  • Implemented a multichromatic excitation and detection scheme for high-fidelity, background-free imaging.
  • Verified atom trapping positions near the dielectric surface using Stark shift measurements.

Main Results:

  • Achieved high-fidelity (~99.2%) background-free imaging of neutral atoms near nanophotonic cavities.
  • Demonstrated successful imaging of atoms trapped a few hundred nanometers above the photonic chip surface.
  • Successfully rearranged atoms into defect-free arrays and loaded them onto devices.

Conclusions:

  • The developed architecture successfully integrates neutral atom arrays with photonic interfaces.
  • The multichromatic imaging technique overcomes previous limitations in atom detection near photonic devices.
  • This work paves the way for scalable, distributed quantum information processing and quantum networking.