Engineers and physicists from Stanford University and the University of California at Santa Barbara have demonstrated what they term “the potential progenitor” of a basic component of quantum computers — a practical, scalable logic gate that enables the interaction of two photons. The research team, led by Stanford Assistant Professor Jelena Vuckovic, produced the gate by introducing an InAs quantum dot within an optical cavity in a photonic crystal and a GaAs chip precisely drilled with holes to give it the capability to trap photons and have them interact with the quantum dot.
Practical, Scalable Quantum Logic Gate Demonstrated
May 20, 2008