Gloria Platero
Research Professor leading the research group New platforms and nanodevices for quantum simulation and computing of the Madrid Institute of Materials Science (CSIC)
The increasing development of quantum nanotechnologies and in particular quantum information has enormous implications for secure information transfer as well as quantum computing.
One of the most fascinating properties of quantum mechanics is the presence of entangled states between two particles. In such states, the particles behave as a unit, and what happens to one particle determines what happens to the other, even if the distance between them is large.
To investigate the origin of the correlation between particles, John Bell proposed a mathematical relation called "Bell inequality". The violation of this mathematical relation supported quantum mechanics as the origin of this correlation over other theories based on hidden variables.
John Clauser and Alain Aspect performed experiments based on Bell's ideas, which violated the mathematical relation proposed by Bell, thus demonstrating quantum mechanics as the basis for explaining the experimental evidence.
Anton Zeilinger also performed pioneering experiments based on entangled states and demonstrated the phenomenon known as quantum teleportation, which allows the transfer of the quantum state of a particle to a distant particle.
The contributions of Clauser, Aspect and Zeilinger have been fundamental, not only for a better understanding of the mechanoquantum properties on which information transfer is based, but also for their numerous applications in the field of new quantum technologies.