Quantum map approach to entanglement transfer and generation in spin chains

• URL: http://arxiv.org/abs/2112.02348v3
• Date: Thu, 16 Dec 2021 18:01:54 GMT
• Title: Quantum map approach to entanglement transfer and generation in spin chains
• Authors: S. Lorenzo, F. Plastina, M. Consiglio, T. J. G. Apollaro
• Abstract summary: Quantum information processing protocols are efficiently implemented on spin-$frac12$ networks. We reformulate widely investigated protocols, such as one-qubit quantum state transfer and two-qubit entanglement distribution, with the quantum map formalism.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum information processing protocols are efficiently implemented on spin-$\frac{1}{2}$ networks. A quantum communication protocol generally involves a certain number of parties having local access to a subset of a larger system, whose intrinsic dynamics are exploited in order to perform a specific task. In this chapter, we address such a scenario with the quantum dynamical map formalism, where the dynamics of the larger system is expressed as a quantum map acting on the parties' access to their respective subsets of spins. We reformulate widely investigated protocols, such as one-qubit quantum state transfer and two-qubit entanglement distribution, with the quantum map formalism and demonstrate its usefulness in exploring less investigated protocols such as multi-qubit entanglement generation.

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