Quantum spin liquid. Free Technical Library News

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

quantum spin liquid

20.12.2021

A new exotic state of matter, the possibility of whose existence was theoretically justified more than 50 years ago, was obtained in laboratory conditions for the first time in history. Created by researchers at Harvard University, this material is called quantum spin liquid, and its further study and use will create a number of new technologies that can have a great impact on the further development of quantum computing and communications.

In order for any material to have magnetic properties, it is required that the rotation of the electrons of the atoms of this material be aligned in one direction. Slightly different types of magnetism can be observed when the rotation of electrons in a material alternates like checkerboard cells, however, such materials still have exotic magnetic properties due to the orderliness of the electron spins.

In 1973, the American physicist Philip Anderson (Philip Anderson) put forward a hypothesis about the possibility of the existence of a state of matter called a quantum spin liquid, which does not obey the rules described just above. Such a liquid arises when matter is cooled to such a state when it does not yet turn into a solid body and the electrons do not occupy a strictly specified position and, as a result, do not align their spins in one direction. Instead, the spins of the electrons are in constant motion, they all get entangled with each other, forming a very complex single quantum state.

To create a quantum spin fluid, the Harvard researchers used the so-called quantum simulator, something like a primitive quantum computer focused on solving only one single problem. The basis of this simulator is 219 atoms located in the nodes of the grid of an optical trap created using laser beams. In addition, with the help of the light of additional lasers, it is possible to control each of the atoms, changing the direction of the spin of its electron.

Scientists arranged the atoms in a trap in the form of a lattice, in the environment of which each of the atoms has two nearest neighbors. A pair of electrons can stabilize and equalize their spins, but the presence of an electron from a third neighboring atom upsets the balance, creating what scientists call a "broken magnet," a magnet that is unable to stabilize on its own.

And as a result, all these atoms formed a certain amount of quantum spin liquid, which has several useful quantum properties. First, the atoms of the liquid are in an entangled state, they can influence each other even at a great distance, which can be used to teleport quantum information. The second property is that all the atoms of the liquid are in a state of superposition, i.e. their electrons can rotate in two directions at once. Both of these properties are the main "quirks" of quantum mechanics that are used today to create quantum computers.

<< Back: paper batteries 21.12.2021

>> Forward: Processing carbon dioxide into rocket fuel 20.12.2021

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

Loose boots 15.02.2000

Why do boots get stuck in the mud? Because when a walker wants to take a step, dense mud, covering the boot from all sides, does not allow air to rush into the resulting void and atmospheric pressure does not allow the sole to be torn off the ground.

By the way, the mechanism of suction of any objects by swamp swamp or quicksand is the same.

The English inventor Cliff Cogger proposed boots that were not subject to this effect. In the boot of his system there is a tube with a valve leading from the sole to the trim of the top. It does not allow a vacuum to form under the sole, and the boot easily crawls out of any dirt.

The detachments of the English coast guard and some fire brigades are already shod in non-binding boots, a new type of footwear is being tested in the American army.

See full Archive of science and technology news, new electronics

All languages of this page

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