KTH Programmable Photonic Chip Measures Topological Properties of Dissipative Systems
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On October 19, 2026, Phys.org reported that a research team at KTH Royal Institute of Technology demonstrated a programmable photonic chip that can simulate dissipative systems and detect and measure their topological properties. The study used a mathematical method to emulate loss without actually losing the signal, then compared the light with a reference beam to distinguish topological cases from ordinary ones and to detect exceptional points. The same chip can be reprogrammed to test different cases. The results were published in Physical Review Letters.
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- Phys.org Optics & PhotonicsPicksProgrammable Photonic Chip Offers New Way to Probe Topological Properties of Optical Systems
A research team at KTH Royal Institute of Technology has demonstrated a programmable photonic chip that can emulate dissipative systems and detect and measure their topological properties. The work uses a mathematical method to simulate loss without actually losing the signal, then compares the light with a reference beam to distinguish topological scenarios from ordinary ones and detect exceptional points. The results were published in Physical Review Letters, and the same chip can be reprogrammed to test different scenarios.
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