Physics

Leaky qubits could enable quantum computing without moving fragile information

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Researchers have discovered a method to generate quantum entanglement by exploiting energy and information leakage from quantum systems into their environment, rather than fighting against it. This approach bypasses the need for noisy quantum communication channels that typically degrade quantum information during transmission. The technique transforms what has traditionally been viewed as a detrimental process in quantum computing into a useful resource for creating entangled states.


This finding could provide a new pathway for quantum technologies to generate entanglement without requiring pristine quantum channels, potentially making quantum communication and computing more practical and resilient. By working with environmental leakage rather than against it, this approach may lead to more robust quantum systems that can operate effectively in real-world conditions.


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The inevitable leakage of energy and information from a quantum system into its surrounding environment is the enemy of quantum technology. Now, researchers have demonstrated that it can be exploited to generate entanglement—the “resource” that quantum technologies use to perform tasks inaccessible to standard classical technologies.

Source: Quantum entanglement without transport: Leaky qubits offer route around noisy channels