Lower Bounds of Success Probabilities for High-Fidelity Approach in KLM Scheme

Kazuto Oshima

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arXiv · 1712.01119

Lower Bounds of Success Probabilities for High-Fidelity Approach in KLM Scheme

Kazuto Oshima

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Abstract

In the Knill-Laflamme-Milburn (KLM) scheme, the success probability of quantum teleportation is given by ${n \over n+1}$, wehre $2n$ is the number of the ancilla qubits. For the high-fidelity approach in the KLM scheme, the success probability is approximately given by $1-{1 \over n^{2}}$ for large $n$. We give an explicit prescription to prepare an optimal ancilla state and give an exact lower bound of the success probability for the high-fidelity approach for arbitrary $n$.

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Kazuto Oshima. 2017-12-12. Lower Bounds of Success Probabilities for High-Fidelity Approach in KLM Scheme. https://arxiv.org/abs/1712.01119

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