Quantum supremacy feat just got harder

• Autores: Mark Kim
• Localización: New scientist, ISSN 0262-4079, Nº. 3149, 2017, pág. 12
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Just when it was looking like the underdog, classical computing is striking back. IBM has found a way to simulate quantum computers that have 56 quantum bits, or qubits, on a non-quantum supercomputer--a task previously thought to be impossible. The achievement moves the goalposts in the race for quantum supremacy, the triumph of quantum computers over classical ones. It used to be widely accepted that a classical computer cannot simulate more than 49 qubits due to memory limitations. The closest anyone had come to putting that limit to the test was a 45-qubit simulation at the Swiss Federal Institute of Technology in Zurich, which needed 500 terabytes of memory.