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arxiv: 1707.06530 · v3 · pith:XFAUOCQDnew · submitted 2017-07-19 · 🪐 quant-ph

Several Trade off Features of Quantum Steering in Distributed Scenario

classification 🪐 quant-ph
keywords steeringbipartiteinequalityqubitsmaximalpairspairwisereduced
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In the present work, we address the question of how bipartite steering violation takes place among multi-partite systems (where each sub-system have Hilbert space dimension restricted to two) based on the maximal violations of the bipartite steering inequality of the reduced pairwise qubit systems. We have derived a trade-off relation which is satisfied by those pairwise bipartite maximal steering violations, which physically can be understood as providing restrictions on the distribution of steering among subsystems. For a three-qubit system, it is impossible that all pairs of qubits violate the steering inequality, and once a pair of qubits violates the steering inequality maximally, the other two pairs of qubits must both obey the steering inequality. We also present a complementarity relation between genuine entanglement present in a tripartite state and maximum bipartite steering violation by its reduced states.

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