This is the smallest single-electron device that has been ever developed Dr. Jason Petta, the lead of the research team, said. The technology that stands at the base of the rice-sized ‘maser’ is called “quantum dots”. These are extremely small specks of crystals that can emit light, and can absorb light from a wavelength and turn it into light at other wavelength.
The lasers were created by connecting pairs of quantum dots with nano-wiring technologies. Thus, the researchers were able to produce beams of microwave energy, with the aid of a low-voltage battery.
Researchers claim that their revolutionary development will lead to great advancements in the technology we use daily. LCD screens that are used for most viewing devices will become sharper, more efficient and longer-lasting. The technology used for these tiny lasers would offer an LCD screen an upgraded range of colors, and would also improve battery life.
What is truly remarkable about this device is that it is powered only by single electrons tunneling from one quantum dot to another, as Dr. Jason Petta explained. He continues to explain the process comparing it to a group of people trying to cross over a stream by jumping on one rock small to hold only one person. The people are therefore forced to cross over one at a time.
Big companies such as Samsung and Apple are keen to introduce the new technology into their products.
The development of the rice-sized laser is of great importance, especially in terms of long-term goals, Jacob Taylor, assistant professor at the Joint Quantum Institute at the University of Maryland-National Institute of Standards and Technology, said. The future plans for the device involve the connection between quantum bits and devices based on semiconductors.
The most important part in the developing a quantum computer is a single electron semiconductor nanostructure. It was believed that before practical quantum computers can be developed, scientists had to realize a scalable architecture that permits the control over each electron in computational arrays. It seems that with the discovery of the new lasers, scientists are one step closer to developing quantum computers
Dr. Jason Petta’s findings were published in the latest issue of the journal Science.
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