New method of controlling particles of light developed by Poles

A team of Polish physicists has developed a new method of quantum control of light particles – photons. Until now, laboratories around the world have used a method developed in 1964. Poles have provided a new and easier-to-implement solution.

Behind the development of the new method is a team ofoThe discovery was published in the prestigious journal Physical Review Lettersoin under the leadership of Dr. hab. Magdalena Stoinska, in whichorego’s work a significant contribution to theos Dr. Adam Buraczewski, and zespoł prof. dr hab. Paweł Horodecki of the Gdansk University of Technology and the National Center for Quantum Informatics with Dr. Adam Rutkowski of the University of Gdansk. The discovery of Polish researchers was published in the prestigious journal Physical Review Letters.

Created by Polakow solution is adapted to the latest systemsow experimental in optical laboratories, is easy to implement and allows for tasks thatore have so far been beyond the reach of laboratoriesoin the world. According to researchers, the new method could revolutionize the IT sector, introducing more effective data security, or speeding up the processes of generating codeoIn random, used for example. in the banking sector.

The mystery of the quantum microworld continues to surprise us. We were able to accept the idea that single photons or electrons are, with some probability, at every point in space simultaneously; likewise, we now know that classical bivariate logic does not apply there. This is illustrated by the example of the famous Schr catödinger described by a superposition of stateow, ktossupportersoLying classically is out of the question.

„Quantum effects make it possible to realize someorych visions so far known from science fiction, e.g. quantum teleportation – transfer of a quantum state of an arbitrarily far. Now we are learning to control particles at a distance. Quantum control can be pored overow to play with a marionette, where the role of the (invisible) strings of theow fully quantum correlations, i.e. entanglement of twooch or more particles. The possibility of control has already been demonstrated for single photonsow.” – reads a press release sent to the Science Journal.

Thanks to the new method of Polakow will also be able to do so for the stateoin multiphoton particles produced by the most common type of sourceodła quantum light. Correlations are classified because of their „power”, that is, the suitability for implementing quantum technologies. The entanglement of dwoch particles is expressed by the correlated randomness of the resultoin measuringoin made on them.

SourceoThe bottom of the strongest correlations, the so-called “exoskeleton”. Bell’s nonlocality, are entangled states, ktore breaking the nonoBell’s inabilities. They allow, for example. on the generation of random numbers. Unfortunately, experimental breakage observations are extremely difficult, especiallyolnie for the stateoIn multi-particle, because the amount of measurementoin very quickly grows with the number of particles. Quantum control represents a separate, least studied type of correlation, ktory is easier to verify in the lab. It is very likely that they will allow tasks to be carried out ktore have so far required breaking the nieroBell’s abilities and were beyond our reach.