The process of creating a Bose-Einstein condensate is accelerated by 100 times. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

The process of creating a Bose-Einstein condensate is accelerated by 100 times

15.12.2017

Scientists from the Massachusetts Institute of Technology have found a way to bypass the limitations of the laser cooling process, which made it possible to speed up the process of creating a cloud of Bose-Einstein condensate by 100 times.

The new method uses exclusively laser light to cool and compress the Bose-Einstein condensate cloud, which allows not only to speed up the entire process, but also to preserve a larger number of the original atoms from which the condensate cloud is formed.

The new method consists of three stages. The first stage uses the traditional laser cooling method, which cools and compresses the cloud until the photons of laser light themselves begin to heat it up. The next, second stage of the process uses the so-called Raman cooling method, in which two beams of laser light cool the atoms to an even lower temperature. The parameters of the laser beams are selected in such a way that the kinetic energy of the atoms is converted into their own magnetic energy. As a result, the atoms slow down and cool down to a lower temperature, while their total energy remains at the same level.

And at the third stage, the light of another laser, aimed at the already cold and compressed cloud of gas, takes energy from slow atoms, cooling them even deeper.

When a Bose-Einstein condensate is obtained in the traditional way, a cloud is obtained from a million initial atoms, in which there are about 10 thousand atoms. The new method allows you to save 70 percent of the initial number of atoms in the cloud. Using this method, the scientists were able to cool rubidium atoms to temperatures from 200 microkelvins to 1 microkelvin in just 0.1 seconds, which is about 100 times faster than the traditional method. The resulting cloud of the Bose-Einstein condensate contained 1 atoms, while the number of original atoms was only 400.

The researchers believe that they were able to unleash only a small part of the potential of the new method. In the future, due to finer tuning of the parameters of laser light and other parameters, it will be possible to achieve a 1000-fold acceleration of the process of obtaining a Bose-Einstein condensate compared to the traditional method.

<< Back: Self-healing glass 15.12.2017

>> Forward: Created a hormone of trust 14.12.2017

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Sniper Radio 29.11.2009

With the help of radio waves, American engineers managed to notice a man who is hiding behind a wall. Many people want to see a person through a wall. These are rescuers, and soldiers, and special forces, and criminals, of course.

Through the efforts of engineers from the University of Utah, led by Associate Professor Neil Patwari, the dream of all these people can come true. And they created a radio tomograph.

The device consists of several dozen radio emitters and receivers associated with them, as well as a central processor. Radiators surround the building, and they begin to generate radio waves that easily pass through the walls. As in any tomograph, detectors catch this radiation and form a map of inhomogeneities - after all, any obstacle, including a person, partially absorbs radio waves.

But a person, unlike walls, moves. Therefore, having noticed a moving inhomogeneity, the computer isolates it and shows it in bright color. And then the operator decides what to do with the received data, depending on his task.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews