University of Oxford Logo University of OxfordDepartment of Computer Science - Home
On Facebook
Facebook
Follow us on twitter
Twitter
Linked in
Linked in
Flickr
Flickr
Google plus
Google plus
Digg
Digg
Pinterest
Pinterest
Stumble Upon
Stumble Upon

Oxford Quantum Talks Archive

Classical simulation of quantum contextuality

Otfried Guehne, IQI, Universitat Innsbruck
Quantum Physics and Logic 2010, May 2010, University of Oxford

Recently, several inequalities involving sequences of measurements have been proposed which hold for non-contextual models but which are violated in quantum mechanics. They also have been found to be violated in experiments and the violation is independent of the prepared quantum state. A typical contextual model explaining this violation uses a classical memory. We investigate the required memory size and show that in order to simulate certain effects of quantum contextuality for two qubits, more than two classical bits are required.

[video] [streaming video]