作者
Roman Goncharov, Alexei D Kiselev, ES Moiseev, E Samsonov, SA Moiseev, F Kiselev, Vladimir Egorov
发表日期
2023/10/1
期刊
Physical Review Applied
卷号
20
期号
4
页码范围
044030
出版商
American Physical Society
简介
We present a scheme of quantum repeater that uses entangled multimode coherent states that are obtained by electro-optic modulation of symmetric and antisymmetric Schrödinger cat states. Part of the generated entangled frequency modes is sent to a symmetric beam splitter at the central node, while the remaining modes are stored locally in quantum memories. The entangled coherent states between remote quantum memories are conditionally prepared by photon-counting measurements at the output channels of the beam splitter. We study how the effects of decoherence in the quantum channel affect statistics of photocounts and, for the heralding outcomes determined by the parity of photocounts, evaluate the probability of success and the fidelity of the prepared entanglement depending on the symmetry of input cat states. It is demonstrated that the generated entanglement can be employed for teleportation …
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