How does it work? | A quantum computer
Source:
A Quantum computer is a computing device that uses the phenomena of quantum mechanics to transmit and process the data. The idea of quantum computing was independently proposed by Yuri mininum and Richard Feynman in the early 80-ies of the last century. Since then has done tremendous work on creating a quantum computer. However, a full-fledged universal quantum computer is still a hypothetical device, the possibility of the development of which is associated with a serious development of quantum theory. To date was created by single experimental system algorithm with small complexity. How does a quantum computer — this was in today's issue!
The Main difference between a quantum computer from the classical one consists in the presentation of information. In conventional computers, based on transistors and silicon chips to process information uses a binary code. Bit, as you know, has two basic States — zero and one, and can only be in one of them. As for the quantum computer, his work is based on the principle of superposition, and instead of bits the quantum bits, called qubits. The qubit also has two basic States: zero and one. However, due to the superposition of the qubit values can be obtained by their combination, and to be in all these States simultaneously. This is the parallelism of quantum computing, then there is no need to iterate over all possible States of the system. In addition, to describe the exact state of the system quantum computer does not need huge computing power and memory, so as to calculate a system of 100 particles need only 100 qubits, not a trillion trillion bits.
It is Also worth noting that changing the state of a particular qubit in a quantum computer leads to a change in the status of other particles, which is another difference from a conventional computer. And this change can be managed. The process of working of a quantum computer was proposed by the British theoretical physicist David Deutsch in 1995, when he created a chain capable of performing any computation on a quantum level. According to his scheme, for a start does the set of qubits and are set to their initial settings. Then performs the necessary conversion using the logical operations and write the resulting value, which is the result given by the computer. The role of the wires are the qubits and the transformations make logical units.
According to scientists, quantum computers will be millions of times more powerful than the current. Already described a variety of algorithms a quantum computer, and even develop special programming languages. According to the forecast of researchers at Cisco Systems, a full working quantum computer will be available by the middle of the next decade. The leader in this field is Japan: more than 70% of all studies came to this country.
Recommended
Mystery of the Sargasso sea, and why there were dead ships
At the time, in the Sargasso sea lost a lot of ships. Almost all mystical place, about which people say, giving them a mysterious halo, are on the water. When ”ends”, the disappearances do seem very strange and inexplicable. One of the places that ar...
An air leak site has been found on the ISS. What's next?
Air leak occurs in Russian station module Inside the International Space Station live astronauts from different countries and all of them need oxygen. The air needed for the life of the crew is produced by special equipment, but the tightness of the ...
Why can thinking about death make life happier?
Awareness of one's own mortality can be a liberating and awakening experience How do you feel about the idea of death? How often do you think about it and what emotions do you feel? Many of us have been pondering these questions lately. The pandemic ...
Related News
How does it work? | Satellite navigation system
the Idea of creating a satellite navigation system was born in the 50-ies of the last century. American scientists led by Richard Kershner watched the signal coming from the Soviet satellite, and found that due to the Doppler effe...
#photo of the day | NASA published pictures of a giant iceberg separated from Antarctica
in July this year, one of the largest in the history of our planet iceberg A-68A is separated from of the Larsen ice sheet in Antarctica. It is difficult even to imagine a giant piece of ice with an area of over 6000 square kilome...
How does it work? | Rain sensor
the Car rain sensor is an optic-electronic device, which is installed on car windshield and responds to hydration. It is necessary for the determination of moisture and automatically turn on the wipers. The first experiments to cr...
How does it work? | Fire sensor
the First automatic fire sensor was heat. It was created by Americans Francis Upton and Fernando Dibble in the late 19th century. The design of the sensor was an electric battery, bell dome, a magnet in an open circuit and a therm...
How does it work? | Motion sensor
the motion Sensors are widely used in security systems to detect intrusion, as well as for automation of lighting and HVAC equipment in homes and offices. Analysts expect growth in the use of motion sensors by 14% annually until 2...
How does it work? | Machine translation
for the First time the idea of using electronic computers for the translation of texts was expressed in 1947 in the United States, immediately after the appearance of the first computer. The first public demonstration of machine t...
How does it work? | Computer vision
As an independent discipline computer vision originated in the early 50-ies of the last century. In 1951 John von Neumann proposed to analyze microsemi using computers by comparing the brightness of adjacent parts of the image. In...
How does it work? | Search engine
the First computer program for searching the Internet was Archie, created in 1990 by students from Montreal. She downloaded a list of all files from all FTP servers and build a database that you can search for file names. The firs...
How does it work? | Accelerometer
Accelerometer — it is a sensor for measuring acceleration. It was invented in the late 19th century and was intended for installation in cars and locomotives to control the speed. The first accelerometers were heavy and bulk...
How does it work? | Holographic display
the First hologram was obtained by the Hungarian physicist Denison Gabor in 1947 in the course of the experiments to increase the resolution of electron microscopes. He coined the word "hologram", wanting to emphasize the complete...
How does it work? | E-Ink-display
Electronic paper was first developed at the Research Center of Xerox in Palo Alto Nick Sheridana in the 70-ies of the last century. The first electronic paper, called Gyricon, consisted of polyethylene spheres between 20 and 100 m...
How does it work? | OLED display
In the last issue we about the LCD display. Today we will focus on a different technology, called OLED. So, how does the display on the organic light emitting semiconductors — this was in today's issue! the Main difference...
Liquid crystals were discovered in 1888 by Austrian scientist Friedrich Reinitzer, and in 1927, a Russian physicist Vsevolod Frederiks was discovered crossing, was named after him and is now widely used in conventional LCD display...
How does it work? | LSD-display
Liquid crystals were discovered in 1888 by Austrian scientist Friedrich Reinitzer, and in 1927, a Russian physicist Vsevolod Frederiks was discovered crossing, was named after him and is now widely used in conventional LCD display...
Nobel laureate in Economics: bitcoin is just another bubble
Robert Shiller is an American economist, has published a number of scientific papers and books on Economics. In 2013, Schiller was the winner of the Nobel prize in Economics. At the moment a scientist teaches the subject at Yale U...
Chess puzzles is worth a million dollars
One of the most ancient Board games, chess is not only developing tactical thinking, but also to improve other useful skills. For example, there are many logical brainteasers on the arrangement of pieces on a chess Board in a cert...
the History of NFC technology takes its beginning in 1983. Then electrical engineer Charles Walton received a patent for "portable radio frequency emitter-ID". Almost 20 years later, in March 2004, Nokia, Sony and Royal Philips El...
At Kaspersky Lab has predicted the future of Moscow
In anticipation of the 870 anniversary of the capital of Russia on the website of Kaspersky Lab there is a very interesting forecast for the Moscow of the future. In the framework of the project «Earth 2050» the experts ...
The head of the company Samsung will spend five years in prison
we have Previously that the billionaire and Vice-President of the South Korean company Samsung Electronics Li Geen was arrested on suspicion of giving multimillion-dollar bribes to government officials. If Jean is the son of the C...
First Bank cards appeared in America in the late 19th century. They were made of cardboard and have served only to confirm the creditworthiness of the owner outside the Bank. In 1914, Western Union issued the first card with a fix...
Comments (0)
This article has no comment, be the first!