All-Optical Switching Using the Quantum Zeno Effect and Two-Photon Absorption

Details All-Optical Switching Using the Quantum Zeno Effect and Two-Photon Absorption All-Optical Switching Using the Quantum Zeno Effect and Two-Photon Absorption

2009-05-08

arxiv.org/abs/0905.1261v1

Phys. Rev. A 79, 063830 (2009).

Physics

Quantum Physics

21 pages, 11 figures. Submitted to Phys. Rev. A

Scientific paper

We have previously shown that the quantum Zeno effect can be used to implement quantum logic gates for quantum computing applications, where the Zeno effect was produced using a strong two-photon absorbing medium. Here we show that the Zeno effect can also be used to implement classical logic gates whose inputs and outputs are high-intensity fields (coherent states). The operation of the devices can be understood using a quasi-static analysis, and their switching times are calculated using a dynamic approach. The two-photon absorption coefficient of rubidium vapor is shown to allow operation of these devices at relatively low power levels.

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