Photonic quantum network transmission assisted by the weak cross-Kerr nonlinearity

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2018,（6）
• 页码范围: 8-23
• 页数: 16页
• 语种: 英文

摘要

Classical network coding permits all internal nodes to encode or decode the incoming messages over proper fields in order to complete a network multicast.Similar quantum encoding scheme cannot be easily followed because of various quantum no-go theorems.In this paper,to avoid these theorems in quantum multiple-source networks,we present a photonic strategy by exploring quantum transferring approaches assisted by the weak cross-Kerr nonlinearity.The internal node may nearly deterministically fuse all incoming photons into a single photon with multiple modes.The fused single photon may be transmitted using twophotonic hyperentanglement as a quantum resource.The quantum splitting as the inverse operation of the quantum fusion allows forwarding quantum states under the quantum no-cloning theorem.Furthermore,quantum addressing schemes are presented to complete the quantum transmissions on multiple-source networks going beyond the classical network broadcasts or quantum n-pair transmissions in terms of their reduced forms.