The heralded amplification for the single-photon entanglement of the time-bin qubit
Lan Zhou, Yu‐Bo Sheng · arXiv (Cornell University) · 2016
We put forward an effective amplification protocol for protecting the single-photon entangled state of the time-bin qubit. The protocol only requires one pair of the single-photon entangled state and some auxiliary single photons. With the help of the 50:50 beam splitters, variable beam splitters with the transmission of $t$ and the polarizing beam splitters, we can increase the fidelity of the single-photon entangled state under $t