Cavity quantum electrodynamic schemes for quantum gates are amongst theearliest quantum computing proposals. Despite continued progress, and thedramatic recent demonstration of photon blockade, there are still issues withoptimal coupling and gate operation involving high-quality cavities. Here weshow dynamic control techniques that allow scalable cavity-QED based quantumgates, that use the full bandwidth of the cavities. When applied to quantumgates, these techniques allow an order of magnitude increase in operatingspeed, and two orders of magnitude reduction in cavity Q, over passivecavity-QED architectures. Our methods exploit Stark shift based Q-switching,and are ideally suited to solid-state integrated optical approaches to quantumcomputing.
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