The researchers were able to create a very tiny device that produces and launches individual putts and on which the information can be transmitted in a quantum bit. Any contact, or even making a measurement, necessarily changes the information encoded on the photon and this will be expressed, upon reaching the destination, in an error in the protocol and giving an indication of the attempted break-in.
The era of the second quantum revolution is already in its infancy and the race for the quantum computer is currently underway: a computer that can perform certain important operations quickly and with much greater power than the activity that computers have today. But along with the blessing in question, the issue raises concerns about the ability to break into encryption, which exist in almost every action we point out: from secure payment, through sending messages, etc. Today every encrypted operation is based on a mathematical algorithm that a normal computer, in terms of computing power and time required, has difficulty solving and hacking the code. In contrast, scientists believe that the great power of quantum computers that will operate quickly and simultaneously, can relatively easily break into encryptions and infringe on users’ privacy.
A new study led by Prof. Ronen Rapaport and Dr. Hamza Aboudia of the Rakach Institute of Physics at the Hebrew University of Jerusalem in collaboration with Monica Fleischer’s research group at the University of Tübingen, led to the development of a relatively simple system that allows encoding Of individual photons on which encoded information was loaded. The individual photons, which are the basic units of light (“light particles”), allow encoding known as “quantum encoding.” Unlike classical encryption today, quantum encryption technology is based directly on the laws of physics and quantum theory rather than mathematics and algorithms. An encryption system based on individual photons that encode quantum, launches them to the desired point, where any attempt to interfere or pump the information – will be identified and thwarted without risk to the information.
Abstractly, today the hackers are trying to get into the information transfer chain between two points, to pump out the information and reconnect the chain, so that the information reaches its final destination. This is without the burglary being detected. The researchers in the team were able to create a very tiny device that produces and launches individual pots on which the information can be transmitted. Each encoded photon is called a “quantum bit”. In a quantum bit any contact, or even a measurement, necessarily changes the information encoded on the photon and this will be expressed, upon reaching the destination, in an error in the protocol and giving an indication of the attempted break-in.
In the device, which was developed using innovative nanometric technologies at the Hebrew University’s Nanoscience and Nanotechnology Center, the researchers used a nanocrystal, less than a thousandth of a hair thick – a semiconductor material that, when illuminated by a laser pulse, emits a single photon. While nanocrystal alone does not allow for the rapid emission of photons to produce high-speed encryption keys, the researchers used a “nanometer trick” and were able to significantly increase the rate, to about ten million putons per second and aim to reach a rate of one billion per second. This is done by flowing the photons in a kind of miniaturized metallic cone attached to the nanocrystal, which serves as a “lightning rod” that draws energy and light from the nanoparticle and becomes an antenna that transmits the light. , By a nano-lens that directs the emission of the photons in the desired direction.
Already today organizations and countries are developing quantum computers and in the not too distant future their use will be common at the commercial and institutional level. The importance of the device is in its ability to enable uninterrupted encoding using a relatively simple system, which can be operated even at room temperature.
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