Quantum dots are a new word in the electronics world, despite the fact that they were first synthesized in 1981 by the Russian scientist Alexei Yekimov. Only today, using the latest technology, we learned how to quickly synthesize and manage the properties of quantum dots, so in the electronics field they predicted quite a lot of areas of use, from simple light-emitting diodes to a quantum computer with phenomenal computing abilities. But they are really applied in the field of display production, opening new boundaries of image transmission. It is the production of displays with Quantum Dots that occupies the largest market share - 30%

QD Displays

Quantum computing

QD Laser

Displays with Quantum dots

How it works in TV?

The interlayer with the quantum dots is placed between the liquid crystal layer and the LEDs illumination. Quantum dots absorb light waves of one frequency from LEDs and emit light of a different frequency, these are pure base colors - red green and blue. The plus is also that you can remove the light filters that are present in the LED TVs. There they perform the function of adjusting the display of colors, while reducing the brightness and saturation of the image.

Quantum dots with the maximum quantum yield are important for obtaining high luminescence efficiency of QLED displays. At the moment, displays with quantum dots have already gained some recognition in the TV market, but given that the technology is quite new, there is a great potential for growth in the quality characteristics of displays with quantum dots, many specialists around the world working om this.

Displays with quantum dots advantages:

  • Accurately display the color regardless of the brightness level.
  • Brightness of 2400 nits (800 nits in OLED).
  • 3 times less consumption than in OLED.
  • Lower cost than OLED in perspective, with an increase in the CT market.
  • QLED serve longer than OLED.

Quantum computing

Hypothetical hyper-productive device

A quantum computer uses quantum algorithms that use quantum mechanical effects, such as quantum parallelism and quantum entanglement, to calculate.

The content of the concept of "quantum parallelism" in the calculation can be described as follows: "The data in the calculation process is quantum information, which at the end of the process is converted into the classical one by measuring the final state of the quantum register. The gain in quantum algorithms is achieved due to the fact that when a single quantum operation is used, a large number of quantum state superposition coefficients that in virtual form contain classical information are simultaneously transformed" [Holevo, A. Quantum Informatics: Past, Present, and Future // In the World science. - July 2008. - No. 7].

Sounds complicated, isn’t it?

In general, we can say that a quantum computer can be useful to us when you need to calculate something that the computer that is on your desk will count millions of years. It can be the study of any complex system, for example, biological. The number of values of the parameters of such a system grows with an incredible, impossible, staggering speed. Because of this, we cannot simulate today the behavior of many systems, respectively, to understand the nature of this behavior using conventional computers.

This is because a conventional processor has such an operating principle that at one point, it can only be in one of the states, the quantum processor is simultaneously in all states, and more over in each of them in a special way! This quantum state is called the "quantum superposition" of data of classical states.

It turns out that a quantum computer works like this - a system of some particles is taken, their state is recorded, then this state is changed by means of some transformations that carry out logical operations. Then again measure the state of the particles. The difference between measurements is the result of computer calculations.

So, it is the quantum dots, due to their unique properties, that are the main candidate for the role of those particles. By the way, one of not many physically existing computers is developed using quantum dots.

Quantum dot laser

A laser at quantum dots is a semiconductor laser, that is, a laser that uses semiconductors as a so-called laser material. These laser materials essentially determine the main characteristics of the laser - the wavelength of the emitting and the power. Quantum dots, as we already know, are semiconductor particles.

And in this sphere quantum dots, due to their special properties, show excellent characteristics in terms of such indicators as:

-band of frequencies

-generation threshold

-relative noise intensity

-increase in the width of the spectral line

- insensitivity to temperature fluctuations

Moreover, due to the fact that by changing the size and composition of the quantum dot, we can change the wavelength of the radiation! Therefore, today we have the opportunity to create lasers that operate at wavelengths that seemed unreal with the use of the old technologies.

Lasers on quantum dots have already found wide application in medicine - laser scalpels (cutting live biological tissue), optical coherence tomography, laser televisions, optical data transmission systems. In 2010, Fujitsu introduced a laser that can transmit data at a speed of 25 gigabits per second on a single beam.



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