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In situ single-atom array synthesis using dynamic holographic optical tweezers.

Hyosub Kim¹, Woojun Lee¹, Han-Gyeol Lee¹

¹Department of Physics, KAIST, Daejeon 305-701, Korea.

Nature Communications

|November 1, 2016

Summary

Researchers developed a new method for precisely moving single atoms in real-time using holographic microtraps. This breakthrough enhances control for quantum computing and simulation platforms.

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Area of Science:

Atomic Physics
Quantum Information Science
Optical Trapping

Background:

Scalable neutral-atom platforms are crucial for advancing quantum computation, simulation, and many-body physics.
Current methods for atom manipulation face challenges in precision and scalability.

Purpose of the Study:

To demonstrate a real-time, high-fidelity method for single-atom transport using holographic microtraps.
To achieve unprecedented spatial controllability for neutral atom arrays.

Main Methods:

Utilized holographic microtraps controlled by a liquid-crystal spatial light modulator for atom manipulation.
Developed an analytical design for flicker-free microtrap movement.
Implemented in situ feedback control for precise single-atom rearrangements.

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Main Results:

Successfully demonstrated real-time transport of single cold rubidium atoms.
Achieved simultaneous rearrangement of atoms with 2N motional degrees of freedom.
Attained a 99% success rate for single-atom rearrangements up to 10 μm translation.

Conclusions:

The demonstrated technique offers high-fidelity preparation of atom arrays.
This method is valuable for deterministic loading of atoms onto arbitrary lattice sites.
Enables real-time qubit shuttling in advanced quantum computing architectures.