Quantum speed-up? Not so fast

• Autores: Jacob Aron
• Localización: New scientist, ISSN 0262-4079, Nº. 3052-3053, 2015, pág. 12
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Google is claiming that the D-Wave quantum computer can solve certain problems millions of times faster than an ordinary computer. But these claims may be overblown. In 2013, Google bought a quantum computer from D-Wave of Burnaby Canada, the only company selling such devices. D-Waves machine is a "quantum annealer", which works by exploring an energy landscape of hills and valleys that corresponds to the problem it is trying to solve. The lowest point an this landscape corresponds to the best solution. A property called quantum tunnelling al lows the D-Wave to traverse this landscape by "tunnelling" through the hills, theoretically letting it reach an answer faster.