Swiss scientists have reached a “pure” quantum state without cooling

Researchers from Federal Higher Technical School Zurich (ETH Zurich) demonstrated an object in a “clean” quantum state without need for low -temperature environment.

The team under the guidance of Professor Martin Frimmer was able to keep Nanoclastic in the optical levitation of three glass spheres with a diameter of ten times smaller than the thickness of human hair. Using optical device and laser radiation, they “eliminated” the action of gravity and achieved almost complete real estate of the object.

Levitation was provided through optical tweezers that allow to manipulate microscopic objects with lasers.

Although the cluster remained suspended, it carried out microscopic fluctuations with a frequency of about a million deviations per second for several thousand degrees. These are the so -called zero vibrations – the fundamental quantum movement inherent in all objects.

Eth Zurich was first able to fix these movements so accurately for the object of this size, eliminating most classical physical influences: 92% of fixed fluctuations were quantum, only 8% were classic. And all this is achieved at room temperature, without complex and expensive cooling systems.

Frimmer called the results “ideal start” for further research, which can find use in sensors that will measure extremely weak forces – from gas molecules to elementary particles, as well as in search of dark matter.

In the future, quantum sensors can be used in medical diagnostics for fixing weak signals against noise or navigation systems without access to GPS. Unlike traditional approaches, new technology is simple, relatively cheap and does not require energy costs.

Recall that in July scientists from the Institute of Phony Quantum Systems (PHQS) and the Center for parallel computing (PC2) at the University of Paderborn in Germany developed an open simulator for modeling light behavior in quantum systems.

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