Scientists from the United States have unveiled a microscopic chip that amplifies the telescope’s signals without adding additional noise. This will allow you to study deep space objects.
The researchers explained that an interferometer separates light or waves into two or more sources, and then, after processing them separately, creates a complete picture. Moreover, the process does not depend on the scale: the device can restore a complete image from a defect on a mirror, dispersion of pollutants in the atmosphere and to gravitational models in distant corners of the Universe.
“If scientists want to measure something with very high accuracy, they almost always use an optical interferometer, because light is a very accurate measure to measure,” said Jaime Cardenas, assistant professor of optics at the University of Rochester.
Now the laboratory of Cardenas (USA) has found a way to make the device even more useful and sensitive. Researchers have created a simple way to amplify interferometric signals without increasing unwanted input signals – noise. Moreover, this was achieved by integrating a 1 mm by 1 mm photonic chip. The device is based on the theory of amplification of weak values by means of waves.
“This weak signal amplification technique can be considered to do so with little or no extra effort or investment. Researchers will be able to do this without additional noise, which is very important, ”said the engineers of the new development.
The amplification of weak signals is based on the quantum mechanics of light and assumes that only certain photons containing the necessary information are directed to the detector. Scientists have proposed this concept before, but with the help of large installations in laboratories, hundreds of mirrors and laser systems, where everything must be painstakingly set up.
“We redesigned these settings and put the settings on a photonic chip,” notes Cardenas. “With an on-chip interferometer, you can mount it on a rocket or helicopter, in your phone – anywhere, and it will never be misplaced.”