Hardware & Errors
Optical Tweezers
Tightly focused laser beams used to hold and manipulate individual atoms in neutral atom quantum computers.
Definition
Optical tweezers are highly focused laser beams that can trap and move individual microscopic particles — including single atoms — using the physical forces light exerts on matter. Neutral atom quantum computers use arrays of optical tweezers to hold and reposition individual qubits.
Technical Definition
The technique relies on the dipole force, where a tightly focused laser beam creates an intensity gradient that attracts polarizable particles like atoms toward the beam's focal point, allowing precise three-dimensional positioning.
Visual Explanation: An Analogy
Think of optical tweezers like an extremely precise, invisible pair of chopsticks made of light, capable of picking up and placing individual atoms exactly where needed — a level of precision impossible with any physical tool.
Real-World Use Cases
- The core technology enabling neutral atom quantum computers like Pasqal's Fresnel processor
- Also used more broadly in biology and chemistry research for manipulating individual cells or molecules