The authors of the new work have created an optical isolator on a chip.element is many times smaller than the one that
The essence of an optical insulator is that it prevents light from propagating in the opposite direction , which usually happensin any medium for the transport of photons.
If such a process needs to be controlled in a large installation, it is common to useBut there is a problem – the chip and strong magnetic fields are incompatible during operation.Researchers have figured out how to get around this, and they've used sound waves, as they candirectly affect the photons.
Ease of fabrication is key – with our approach, you can print optical insulators that work wellfor any wavelength you need, all on the same chip at the same time.This is simply not possible with other approaches.
Ogulkan Orcel, PhD Student in Electrical Engineering, University of Illinois at Urbana-Champaign
As a result, the scientists proposed to use a ring sound resonator with optical waveguides.The light that comes from the laser passes throughIf you use such a scheme, then back along the light guide it will bePhotons are not absorbed or reflected, but simply pass throughfarther.
The result is a solution that has the potential to reduce the design of quantum optical processors.
Also, the authors note, their resonator can be made so that it only allows a certain wavelength of light to pass through. This means that such a chip can be fine-tuned already at the production stage.
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