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Bengaluru lab tests single-shot control of quantum decoherence
The Indian Express··15 Sept
Scientists at Raman Research Institute's QuIC laboratory in Bengaluru demonstrated a single-shot operation that can delay quantum decoherence and avoid entanglement sudden death. Group leader Urbasi Sinha said timing of the gate can redirect entanglement rather than relying on long corrective sequences. The work appeared in Physical Review A. Sinha called it a proof of concept, not a full decoherence.
Prism
What It Means For You
- Future quantum processors could use timing as a control knob alongside materials and error correction.
- Research labs testing fragile entangled states may try similar single-shot gates in their setups.
- India-based quantum hardware teams watch RRI results for reproducibility in other environments.
What's Happening
- Quantum computers use entanglement and superposition but states decay quickly in open environments.
- Repeated corrective interventions are costly and can add errors, the team noted.
- Sinha said the operation can also hasten decoherence at some instants.
Why decoherence matters
- Traditional machines store information as 0s and 1s.
- Sudden entanglement death can end useful states before normal decay.
- Sinha is a senior professor at RRI in Bengaluru.
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