Sur la voie de l’ordinateur quantique, à mi-parcours ?
Researchers Report Milestone in Developing Quantum Computer
New York Times, John Markoff, 04/03/2015
▻http://www.nytimes.com/2015/03/05/science/quantum-computing-nature-google-uc-santa-barbara.html
The goal has long remained out of reach, however, because the computers are composed of basic elements known as #qubits that have remained, despite decades of engineering research, highly unstable.
(…) The university and #Google researchers reported, however, that they had succeeded in creating an error-correction system that stabilized a fragile array of nine qubits. The researchers said they had accomplished this by creating circuits in which additional qubits were used to observe the state of the computing qubits without altering their state.
But an important asterisk remains, according to scientists who read an early version of the paper. The Nature paper stated the researchers had succeeded in preserving only the limited “classical” states, rather than the more complex quantum information that would be needed to create a system that outperforms today’s computers.
(…) In September, Google announced it would join efforts to build a #quantum_computer as part of the recently established Quantum Artificial Intelligence Laboratory.
▻http://www.nas.nasa.gov/projects/quantum.html
(…) Google is not the only computing company collaborating with academic researchers in advancing quantum computing. IBM is working with scientists at Yale, and Microsoft is working separately with researchers at the University of California, Santa Barbara, supporting the Station Q research laboratory it created there in 2006.
L’article publié dans Nature :
▻http://www.nature.com/nature/journal/v519/n7541/full/nature14270.html
