Molecules, rare earths, and light: Innovative platform for quantum computers and communications
The ability to interact with light provides important functionalities for quantum systems, such as communicating over large distances, a key ability for future quantum computers. However, it is very difficult to find a material that can fully exploit the quantum properties of light. A research team from the CNRS and l'Université de Strasbourg, with support from Chimie ParisTech-PSL, has demonstrated the potential of a new material based on rare earths as a photonic quantum system.
A team of scientists from the CNRS and l'Université de Strasbourg, with support from Chimie ParisTech-PSL and in collaboration with German teams from KIT, has successfully demonstrated the value of europium molecular crystalsfor quantum communications and processors, thanks to their ultra-narrow optical transitions enabling optimal interactions with light.
Europium molecular crystals represent a major advance, as they have ultra-narrow linewidths. This translates into long-lived quantum states, which were used to demonstrate the storage of a light pulse inside these molecular crystals. Moreover, a first building block for a quantum computer controlled by light has been obtained.
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