The University of Geneva, Switzerland, in collaboration with the ETH Zurich scientists, uses a quantum-cooling compression method to connect two substances together by the peculiar quantum mechanical properties. This achievement opens up new avenues for understanding quantum physics and creating future quantum circuit devices.
Recently, the experimental team at the ETH Zurich led by Tilman Esslinger and Jean-Blanket. They first capture the atoms with a laser beam to isolate all external disturbances. The laser beam cools the atom to a very low temperature, producing a clean, quantum-mechanical, cold-state superconductor. The researchers then connected two cold atomic cloud superconductors through a quantum dot in the form of Josephson junctions to bring them together under strong interaction and to achieve efficient transport of supercooled atoms between the superconductors.
Sherri Gammaqi, a professor at the Geneva University School of Science who is in charge of the theoretical part of the study, explains that under normal conditions particle interactions are weak, whereas in cold-state superconductors particle interactions are very strong. The strong interaction effect through cooling is just like water making ice: the basic system is still the same, but the effect is very different after cooling. Gamaki said: "With this new quantum connectivity, we can unveil the new effects in these superconducting quantum systems. This is a fundamental breakthrough that allows ultra-cold atoms to exploit quantum physics to create new properties."
The researchers pointed out that in order to generate clean nodes between quantum materials is very difficult. Now they have been able to create strong interaction of quantum contacts, the quantum materials together, and ultimately create new materials for everyday use. This achievement is a key step toward understanding the transport of supercooled atoms, helping to further the study of superconducting and other quantum interconnect materials, forming electronic circuits in computers, electronic devices and transistors, opening up new avenues for more efficient information processing.
Relevant papers published in the recent "Science" magazine.
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