Improving the Fidelity of Optical Zeno Gates via Distillation

Abstract

We have modelled the Zeno effect Control-Sign gate of Franson et al (PRA 70, 062302, 2004) and shown that high two-photon to one-photon absorption ratios, $\kappa$, are needed for high fidelity free standing operation. Hence we instead employ this gate for cluster state fusion, where the requirement for $\kappa$ is less restrictive. With the help of partially offline one-photon and two-photon distillations, we can achieve a fusion gate with unity fidelity but non-unit probability of success. We conclude that for $\kappa >2200$, the Zeno fusion gate will out perform the equivalent linear optics gate.

6 pages, 11 figures, Submitted to PRA

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• Freezing Optical Rogue Waves by Zeno Dynamics
• Non-Abelian Phases from a Quantum Zeno Dynamics
• Optical Zeno Gate: Bounds for Fault Tolerant Operation
• Zeno Dynamics of Quantum Chirps
• A counterfactual Rydberg gate for photons
• Entangling photons via the double quantum Zeno effect