Fast Nondestructive Parallel Readout of Neutral Atom Registers in Optical Potentials

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.