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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Fast Nondestructive Parallel Readout of Neutral Atom Registers in Optical Potentials.

M Martinez-Dorantes¹, W Alt¹, J Gallego¹

¹Institut für Angewandte Physik der Universität Bonn, Wegelerstrasse 8, 53115 Bonn, Germany.

Physical Review Letters

|December 9, 2017

Summary

This summary is machine-generated.

We developed a fast, nondestructive method to read the hyperfine state of trapped Rubidium-87 atoms. This technique uses fluorescence imaging and Bayesian inference, achieving high fidelity for quantum information processing applications.

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Area of Science:

Atomic Physics
Quantum Information Science
Optical Physics

Background:

Accurate readout of atomic states is crucial for quantum computing.
Existing methods can be destructive or lack fidelity for dense atom arrays.
Optically trapped neutral atoms are promising qubits.

Purpose of the Study:

To demonstrate a parallel and nondestructive readout scheme for optically trapped Rubidium-87 atoms.
To develop a method for analyzing overlapping fluorescence images in dense atom arrays.
To enable scalable readout for quantum information processing.

Main Methods:

State-selective fluorescence imaging of optically trapped Rubidium-87 atoms.
Application of Bayesian inference for analyzing overlapping atomic fluorescence signals.
High-fidelity detection with minimal atom loss.

Main Results:

Achieved detection fidelities greater than 98% within 10 milliseconds.
Maintained over 99% of atoms in their traps during readout.
Successfully resolved internal states in dense atom arrays using novel image analysis.

Conclusions:

The demonstrated method offers fast and nondestructive readout for neutral atom qubits.
Scalable to large atom registers, supporting future quantum information processing.
Enables simultaneous readout of qubit states and atomic positions.