AI Summary

A new study suggests a way to read a quantum bit without collapsing its state. The approach uses an Andreev qubit, which naturally generates an oscillating electric supercurrent through its quantum dynamics. This supercurrent acts as a macroscopic signal that reflects the qubit’s state. By measuring the supercurrent, researchers can reconstruct the qubit’s information with minimal disturbance. The method could allow repeated readouts of a qubit while preserving its quantum coherence.

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