# Interferometric Readout of Momentum-Space Topology in a Programmable Dissipative Photonic Circuit

Source: [feeds.aps.org](http://link.aps.org/doi/10.1103/xkht-64kc) · 2026-11-12 · Physics
Page: https://themorning.science/story/interferometric-readout-of-momentum-space-topology-in-a-programmable-dissipative-aed729df979acaa8
Kind: research · Impact: low

## In brief

- A programmable photonic circuit uses unitary dilation and interferometry to measure momentum-space topological invariants.
- The method targets strongly dissipative non-Hermitian systems.
- The work is published in Physical Review (APS feed, dated 2026-11-12).

## Why it matters

It offers an experimental route to read out topological invariants in non-Hermitian photonic systems, where conventional approaches are harder to apply, which could help photonics researchers characterise dissipative topological devices.

## Timeline

- 2026-11-12: Paper reported by APS feed

## Coverage

- [Interferometric Readout of Momentum-Space Topology in a Programmable Dissipative Photonic Circuit](http://link.aps.org/doi/10.1103/xkht-64kc) — feeds.aps.org, 2026-11-12

Tags: photonics, topology, non-hermitian physics, interferometry, programmable circuits

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science