U.S. and Australian scientists have successfully produced the world’s smallest transistor – by the seven atoms in the silicon surface form of a “quantum dots”, indicating that our new era of computing power to an important step.

Quantum dots is a light-emitting nano-sized crystals, sometimes referred to as “artificial atoms.” Although quantum dots are very small, only a billionth of the length of four meters, but it is a functioning electronic equipment, is the world’s first atomic deliberately made out of electronic equipment. It not only can be used to regulate and control equipment such as commercial transistor current, and a sign of our atomic scale to smaller and ultra-fast, super-large computer an important step in a new era.

University of New South Wales, Australia Centre for Quantum Computer Technology and the University of Wisconsin-Madison researchers have formed a joint team in the latest issue of the journal Nature Nanotechnology detailed description of this discovery. In the study of quantum computer technology, Professor Michelle Simmons, director, said: “This achievement is important because we do not make atomic activities observed under the microscope or atom, but manipulation of individual atoms, to atomic precision to place surface to produce an electronic device to work. ”

“Australian research team has to take full advantage of crystalline silicon manufacturing electronic equipment, we use crystalline silicon above the phosphorus atoms replace silicon atoms 7 and reached the astonishing accuracy. This is a major scientific and technological achievements, is that manufacturers’ ultimate computer ‘(made with a silicon atom quantum computer) the feasibility of a key step. “placed on a surface of atomic technology – scanning tunneling microscope – has been available for two decades. Prior to this, no one can use the technology to manufacture atomic precision electronic equipment, and then make it deal with the electronic input from the microscopic world.

Professor Simons said: “What can have small electronic devices? We are verified its limit. Australia’s first computer market in 1949, it occupies the entire room, you can only hand holding parts. Today, You can put them hands on, many parts of the diameter of even just one-thousandth the diameter of a human hair. ”

“We have now demonstrated the world’s first silicon material in atomic scale electronic devices manufactured under the systemic. This is not only to computer users of special significance, of the utmost importance for all Australians. Over the past 50 years, electronic Device miniaturization has been driven global economy, a key factor in productivity growth. Our research shows that this process can continue. ”

US-Australia joint research group’s main goal is to manufacture silicon quantum computer, Australians have a unique in the field of human resources and a world leader. This new electronic devices that achieve the atomic scale of the manufacturing equipment and measurement technology has begun to come.

Currently, commercial transistor gate (transistor gate, the device will enable the transistor to act as current amplifiers or switch) the length of about 40 nm (a nanometer is a billionth of a meter), Quantum Computer Technology Center research team is developing length is only 0.4 nm devices.

Professor Simmons, 20 years ago,Don Eigler and Erhard Schweizer at IBM’s Almaden Research Center, and fashioned with xenon atoms IBM Corporation logo, which is when the identity of the world’s smallest. Two using a scanning tunneling microscope, the 35 xenon atoms placed on the surface of nickel, spell out the “IBM” three letters.

Aigle and Schweitzer, a research paper published in “Nature” magazine, they wrote: “The basic principles of device miniaturization is obvious.” Two papers also warned many times, and concluded that: “Atomic scale logic circuits and other equipment from some of our distant future.” Professor Simmons said: “It was something that seems so far now become reality. We use this microscope observation or skilled operator can not only atoms, but also with seven atomic atomic precision manufacturing equipment to make it work in a real environment. “

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