‘Quantum squeeze’ for the first time nanoskal particle

Researchers at the University of Tokyo, Mitsivishi Kamba, Novaki Hara, and Kyoteka Ikawa have successfully demonstrated the quantum squeeze of nanoskal particle movement, a movement whose uncertainty is smaller than quantum mechanical fluctuations.

Since it is very important to increase the precision of sensors in many modern technologies, this feat creates a way not only for basic research in basic physics but also for applications such as proper driving and navigation without GPS signals. These results are published in the journal Science.

The physical world in Macroskle, from dust particles to planets, operates under the laws of classic mechanics discovered by Newton in the 17th century. The microskel, the atoms and the below the physical world, operate under the laws of quantum mechanics, which is usually not observed in macroskal.

One of these phenomena is the “uncertainty” in the quantum world: the health -related health quantum is naturally limited by mechanical fluctuations. For example, the quantum is mechanical fluctuations of zero -point fluctuations, and the speed of the trapped particle is also when it is in its lowest potential energy.

Quantum squeeze is a breed of quantum mechanical condition, with uncertainty less than zero point fluctuations. The precision measurement of an item with a quantum mechanical range is essential not only to properly understand the natural world but also to design the next generation technologies that can be affected by quantum phenomena.

“Although quantum mechanics has been successful with microscope particles, such as photons and atoms, it has not been discovered to what extent quantum mechanics in macroscopic scales are accurate,” says Principal Investigator Ekawa. “One of the reasons is that it has been difficult to develop a proper experimental condition for finding quantum mechanics for the larger, namely nanosk,.”

Researchers came out to find a particle that could be used as a platform to investigate quantum phenomena in Nanoskal. He used a glass of nanoskal particle in which a space was engulfed in space and cooled it at least on the energy level to reduce its uncertainty. After ensuring that his ability to get stuck was better module, the researchers released the particle and allowed it to fly for a short time, measured the speed before the release. Repeating this procedure, he achieved the distribution of particle speed in this capacity.

Ikawa explains, “When the time before release is more and more, the speed distribution is much tight than the lowest energy level uncertainty, which is a signature of quantum squeezing. “

Researchers can finally show quantum squeezing after a year long, as many technical issues that they faced in the particle. Levitation itself also created basic problems. However, these challenges did not stop them, and they still do not intend to stop.

“When we found a condition that can be re -reproduced reliably,” Ikawa is called. “We were surprised how sensitive the nanoskal particle was to fluctuate the atmosphere. This small particle isolated into the vacuum environment would be an ideal system for finding a transfer between quantum mechanics and classic mechanics and developing new types of quantum devices in the future.”