MilestoneHardwareConfirmed

Four entangled photons demonstrate computing through measurements

Mar 10, 2005

Philip Walther and colleagues create a four-photon entangled state and use measurements to carry out quantum logic operations and a small version of Grover's search algorithm. Their experiment demonstrates the one-way model of quantum computing.

Why it matters

Quantum computation can be driven by measurements of an entangled resource, offering an alternative to applying a sequence of logic gates.

Philip Walther · Anton Zeilinger · Vienna · MPQ

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Related

• Lov Grover finds a quantum algorithm for faster unstructured search (May 1996)
• Knill, Laflamme and Milburn show how to compute with photons and linear optics (Jun 20, 2000)