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Physicists at Stellenbosch University have resolved a decades-long mathematical inconsistency in the Caldeira-Leggett model by identifying how heat accelerates quantum decoherence through high-frequency fluctuations. This refinement eliminates previously predicted negative probabilities and provides a physically consistent framework for understanding the transition from quantum to classical behavior in thermal environments. The finding is critical for advancing quantum error correction strategies and optimizing qubit stability as operating temperatures rise.

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Stellenbosch University finds heat speeds up quantum decoherence

Quantum ZeitgeistAugust 21, 20262 min read

Physicists at Stellenbosch University pinpointed a mechanism accelerating decoherence, the loss of quantum properties, at higher temperatures.

Physicists at Stellenbosch University, working with colleagues at the National Institute for Theoretical and Computational Sciences and KTH Royal Institute of Technology, have resolved a decades-old inconsistency within a key model describing how quantum systems lose coherence. The team discovered that…

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