In the future, quantum computers will be able to handle computing tasks that conventional computers fail at. However, because objects in the quantum world react very sensitively to disturbances, there are still limits to their implementation today.
Error-proneness can be reduced by encoding quantum information in a larger number of quantum objects rather than storing it in a single quantum particle.
Physicists Hendrik Poulsen Nautrup and Hans Briegel of the Institute of Theoretical Physics at the University of Innsbruck and Nicolai Friis, now at the Institute of Quantum Optics and Quantum Information in Vienna, have found a method to exchange quantum information between differently encoded systems.
"We have developed a method to connect differently encoded quantum systems"
says doctoral student Hendrik Poulsen Nautrup.
This involves local interventions on individual elements of the encoded quantum bit. The newly developed method will soon be implemented in the laboratory and represents a further step on the way to a universal quantum computer.
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