GoKawiilISTA physicists entangle distant qubits using autonomous 'quantum bath'
Researchers at the Institute of Science and Technology Austria, led by PhD student Alejandro Andrés-Juanes and professor Johannes Fink, built a prototype device that links two separated qubits using a bath of correlated light particles instead of active measurement or control. The work, published in Physical Review X, confirms a theoretical prediction made over two decades ago about self-sustaining entanglement generation.
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Current methods for connecting distant qubits rely on repeated measurements and post-selection, which slow down and complicate efforts to scale quantum computers into networks. An autonomous, always-on entanglement mechanism could remove that bottleneck, offering a simpler and more reliable path toward linking quantum modules together.
- ISTA demonstrated autonomous entanglement between distant qubits using a photon-based 'quantum bath'.
- The method avoids the active control and repeated measurements required by prior techniques, including the Nobel-recognized photon-matching approach.
- This validates a 20-year-old theoretical proposal and could inform future scalable quantum computing architectures.
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Published there as: “A “quantum bath” puts quantum entanglement on autopilot”
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