Physicists have successfully transferred light stored in a quantum memory device
The research team reported the 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 at the University of Mainz Johannes Gutenberg managed to avoid this by using a special storage device. They used a cloud of ultracold atoms of rubidium-87 as a carrier, controlled by the “optical conveyor belt” method.
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In fact, physicists closed the light in a dark box of cold atoms, which they moved 1.2 mm without damaging the contents. This storage method was developed in 2018 by a team at the University of Alberta, Canada.
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 units or memory devices for light with separate sections for reading.
These technologies are already actively developing and last year the world’s first optical transistor with a frequency of 2 THz, operating at room temperature, was created.
, Johannes Gutenberg University Mainz