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Quantum computing

Quantum computing

Long-lived qubits survive as ‘islands’ in a noisy environment

05 Feb 2024 Isabelle Dumé
Image showing pairs of terbium ions represented as dots with spin arrows encased by glowing protective spheres, against a messy background of broken bits of metal
Not bothered: Within a dense system, some terbium ions form paired states that cannot interact with single terbium ions nearby. Protected from their messy environment, they can act as qubits with surprisingly long coherence lifetimes. (Courtesy: Ella Maru Studio)
The length of time that quantum bits (qubits) retain their quantum nature is crucial for quantum com

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Isabelle Dumé is a contributing editor to Physics World
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