AIQuanta Magazineabout 2 hours ago
Quantum Computing's Fragile Qubit Challenge
1 min read
Quantum computers use fragile qubits that must balance isolation with manipulation. Researchers pursue trapped-ion, neutral-atom, and superconducting approaches. Caltech trapped a record 6,100 cesium atoms in 2025, while IBM's Nighthawk chips host 120 qubits each. Scaling to millions of qubits remains the biggest hurdle.
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