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arXiv · 1710.09981

Entanglement swapping via three-step quantum walk-like protocol

Xiao-Man Li·Ming Yang·Nikola Paunkovic·Da-Chuang Li·Zhuo-Liang Cao
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Abstract

We present an entanglement swapping process for unknown nonmaximally entangled photonic states, where the standard Bell-state measurement is replaced by a three-step quantum walk-like state discrimination process, i.e., the practically nontrivial coupling element of two photons is replaced by manipulating their trajectories, which will greatly enrich the dynamics of the coupling between photons in realizing quantum computation, and reduce the integration complexity of optical quantum processing. In addition, the output state can be maximally entangled, which allows for entanglement concentration as well.

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Xiao-Man Li, Ming Yang, Nikola Paunkovic, Da-Chuang Li, Zhuo-Liang Cao. 2017-10-27. Entanglement swapping via three-step quantum walk-like protocol. https://doi.org/10.1016/j.physleta.2017.10.022

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