Quantum Bath Links Distant Qubits
Physicists at the Institute of Science and Technology Austria have successfully demonstrated a method to entangle distant qubits using a 'quantum bath' of light. This autonomous approach validates a 20-year-old theory and could improve the scalability of quantum networks.
Why it matters
Advancements in distributed entanglement are essential for building functional, large-scale quantum computers and secure quantum communication networks.
Future quantum computing will require correlations between distant modules - a feature known as distributed entanglement. Traditionally, such entanglement has relied on active control and repeated measurements. Now, physicists at the Institute of Science and Technology Austria (ISTA) have realized a fully autonomous method for distributed entanglement using a "quantum bath" of correlated light particles. Published on Monday in Physical Review X, their work experimentally confirms a 20‑year‑old prediction and could provide a new platform for applied quantum technologies.
Entanglement is a central feature of quantum physics in which shared correlations exceed what classical physics theories can explain. Achieving distributed entanglement between physically separated qubits (quantum bits) could enable future advances, such as scalable quantum computers and quantum networks.
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