23 January 2020

Quantum networks for improved sensing

Quantum networks

Researchers from QMATH have in collaboration with an experimental team at DTU demonstrated that quantum networks can improve on distributed sensing tasks.

Researchers from QMATH have in collaboration with an experimental team at DTU demonstrated that quantum networks can improve on distributed sensing tasks. Focusing on available technology of squeezed light generation and homodyne detection, they have developed a protocol for detecting an average optical phase shift with improved sensitivity per probe compared to non-correlated approaches. This was experimentally demonstrated in a four node network highlighting that such advantages are accessible even with present noisy technology.    

The work is published in Nature Physics
 https://www.nature.com/articles/s41567-019-0743-x 
and featured in
Phys.org https://phys.org/news/2020-01-high-precision-entangled-quantum-network.html