Monolithic Terahertz Topological Mach-Zehnder Interferometer.

ABSTRACT: The pursuit of on-chip electromagnetic wave control for high throughput communication, spectroscopy, and quantum computing underlies the motivation for terahertz photonic integrated circuitry. Recent breakthroughs in topological photonics have enabled the development of chips that harness topologically resilient interface modes to achieve area and performance efficiency. However, the demonstration of a compact, monolithic topological Mach-Zehnder interferometer (MZI), remains a critical gap. In this work, a terahertz topological MZI is presented, exhibiting six interferometric fringes across a 17 GHz bandwidth, with splitter, combiner, and arms integrated on a single chip. The interferometric fringes exhibiting high on-off contrast with extinction ratios over 20 dB are achieved by utilizin

SUBMITTER: Navaratna N 

PROVIDER: S-EPMC12447052 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature