Researchers from the Eindhoven University of technology have come up with a way to within a billionth of a second control in the form of photons. The experiment is of interest for the development of information transfer between quantum computing solutions that.
The scientists of the TU/e and the FOM provided a fotonisch crystal of semiconductor material that photons can transmit. Such a quantum dot in a crystal-call researchers with a optical trilholte and the crystal as a filter. By an extremely short electric pulses, determined how the quantum dot interacts with the trilholte and how the photon is emitted. By the strength to change, they could the form of the photon determine.
This manipulation of the uk has been done before, but never so quickly. “The energy of a photon stretches only about one nanosecond, so if you want to change something, you have that within that time,” explains research leader Andrea Fiore of Eindhoven university of technology. He makes the comparison with the shutter speed of a camera.
The experiment represents a step forward for the development of a kwantuminternet: it brings very efficient exchange of photons closer. The precise control is necessary in order to have a symmetrical form of photons. Naturally, photons by atoms are emitted not a symmetrical form, but for the transfer of information is required. Scientists can now experiment with the production of a few, to manipulate photons that, over time, can be used for information encoding.
That should turn out to be a kwantumnetwerk lead. One of the intended goals of quantum computing solutions that is that they are used for very strong encryption and the cracking of encryption. A kwantumnetwerk must then take care to secure for quantum information exchange.
The scientists describe their research in the article Dynamically controlling the emission of single excitons in photonic crystal cavities in the scientific journal Nature Communications.
