Quantum photonic technologies set to be more reliable with new interferometer

https://phys.org/news/2024-05-quantum-photonic-technologies-reliable-interferometer.html

"real-time single-pass testing photon uniformity using ultra-thin, ultrastable, metasurface, multiport, single-element interferometer... meta-optics decreases size, weight, power, cost of production... static, dielectric metasurface grating without reconfigurable elements, using multi-factor topology optimization... future: also measure indistinguishability of other photon properties (asorbital angular momentum)... portable and satellite-based free space quantum photonic technologies"