Research team reports successful controlled transfer of light stored in quantum memory over a distance greater than the size of the carrier.
Trapped light is usually lost when transported to another location. However, scientists from the University of Mainz Johannes Gutenberg succeeded avoid this by using a dedicated storage device. As a carrier, they used a cloud of ultracold atoms of rubidium-87, controlled by the method «optical conveyor belt».
In fact, physicists closed the light into a dark box of cold atoms, which they moved 1.2 mm without damaging content. This storage method was developed by in 2018 by the team of the Canadian University of Alberta.
The achievement paves the way for the development of efficient systems for optical communication and storage of quantum data without loss of information, for example, to create repeater blocks or memory devices for light with separate sections for reading..
Physicists have successfully transferred light stored in a quantum memory device
These technologies are already actively developing and last year the world’s first optical transistor was created. with a frequency of 2 THz, operating at room temperature.
text: Ilya Bauer, photo: Johannes Gutenberg University Mainz