Topological quantum transport and spatial entanglement distribution via disordered bulk channel

• URL: http://arxiv.org/abs/2002.06543v1
• Date: Sun, 16 Feb 2020 09:21:52 GMT
• Title: Topological quantum transport and spatial entanglement distribution via disordered bulk channel
• Authors: Shi Hu, Yongguan Ke, and Chaohong Lee
• Abstract summary: We show how to implement quantum transport, generate entangled state and achieve spatial entanglement distribution. We introduce the on-site disorders to suppress the high-order resonant tunneling. We also demonstrate how to prepare spatially entangled two-particle NOON state via Hong-Ou-Mandel interference.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We show how to implement quantum transport, generate entangled state and achieve spatial entanglement distribution via topological Thouless pumping in one-dimensional disordered lattices. We introduce the on-site disorders to suppress the high-order resonant tunneling (which cause wavepacket dispersion) and realize dispersionless Thouless pumping. The interplay between the on-site disorders and the band topology enables robust unidirectional transport. We also demonstrate how to prepare spatially entangled two-particle NOON state via Hong-Ou-Mandel interference assisted by the Thouless pumping. The quantum entanglement can be well preserved during the distribution between spatially separated sites. Our system paves a way to wide applications of topology in quantum information process.

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