New toolkit for photonics: Quantum simulation by light radio | 7/29/2019 | Staff
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Intensive research is being carried out on quantum simulators: they promise to precisely calculate the properties of complex quantum systems, when conventional and even supercomputers fail. In a cooperative project, theorists from the the Max Planck Institute of Quantum Optics in Garching anf the Consejo Superior de Investigaciones Científicas (CSIC) have now developed a new toolbox for quantum simulators and published it in Science Advances. It uses the Nobel Prize-winning principle of topology to allow quantum bits, for example individual atoms, to communicate with each other via "topological radio channels." The "radio channels" are provided by a light field that travels in waveguide in a robust manner with the help of topology. The concept offers room for completely new ideas, ranging from basic research to quantum information.

"How can we make two distant quantum bits 'talk' to each other?" asks Alejandro González-Tudela. "This is an essential challenge in the field of quantum information and simulation!" Until recently, the theoretical physicist was a postdoctoral fellow in the department of Ignacio Cirac, director at the Max Planck Institute of Quantum Optics in Garching, and today he is a permanent researcher at the Instituto de Física Fundamental IFF-CSIC in Madrid. Together with Cirac and two Spanish colleagues from the Instituto de Ciencias de Materiales de Madrid, he has now published a scientific paper that introduces a completely new toolbox to photonics. Photonics is a branch of physics that deals with the interaction between light and matter and its technical application.

Application - Quantum - Simulation - Idea - US

One possible application is the so-called quantum simulation, which goes back to an idea of the famous US Nobel Prize winner Richard Feynman. If one wants to calculate the behavior of a quantum system as accurately as possible on a conventional computer, the necessary computing power doubles with each new quantum particle in the system....
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