Arbitrary Four-Photon Cluster State Concentration with Cross-Kerr Nonlinearity

Sheng, Yu‐Bo; Zhao, Sheng-Yang; Liu, Jiong; Wang, Xing-Fu; Zhou, Lan

doi:10.1007/s10773-014-2327-y

Cited by 8 publications

(2 citation statements)

References 78 publications

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“…Our goal is to avoid such degradation in entanglement, and achieve the quantum communication applications with high fidelity. To do so, many ECPs have been proposed and all those existing ECPs have been designed for many different quantum states [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] as well as for Cluster state in different forms [48][49][50][51][52][53][54][55][56]. However, to the best of our knowledge, no ECP has been reported for 4-mode Cluster-type ECS.…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, the Cluster states still interact with the noise just like other multi-partite states and consequently becomes less entangled. To avoid such noise effect, several ECPs have been reported for Cluster states in different forms [48][49][50][51][52][53][54][55][56]. However, we choose to propose two ECPs for 4mode Cluster-type ECS.…”

Section: Introductionmentioning

confidence: 99%

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Linear optics-based entanglement concentration protocols for cluster-type entangled coherent state

Sisodia

Shukla

Long

2019

Quantum Inf Process

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We proposed two linear optics based entanglement concentration protocols (ECPs) to obtain maximally entangled 4-mode Cluster-type entangled coherent state (ECS) from less (partially) entangled Cluster-type ECS. The first ECP is designed using a superposition of single-mode coherent state with two unknown parameters, whereas the second ECP is obtained using a superposition of single-mode coherent state and a superposition of two-mode coherent state with four unknown parameters. The success probabilities have been calculated for both the ECPs. Necessary quantum circuits enabling future experimental realizations of the proposed ECPs are provided using linear optical elements. Further, the benefit of the proposed schemes is established in the context of long distance quantum communication where photon loss is an obstruction.

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