1. Quantum map approach to entanglement transfer and generation in spin chains
- Author
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Lorenzo, S., Plastina, F., Consiglio, M., and Apollaro, T. J. G.
- Subjects
Quantum Physics - 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., Comment: 20 pages, 8 figures, Contributed chapter in the Springer volume on "Entanglement in Spin Chains: Theory and Quantum Technology Applications"
- Published
- 2021