Transitionless-based shortcuts for the fast and robust generation of W states

Abstract

We propose a scheme to generate W states based on transitionles-based shortcuts technique in cavity quantum electrodynamics (QED) system. In light of quantum Zeno dynamics, we first effectively design a system whose effective Hamiltonian is equivalent to the counter-diabatic driving Hamiltonian constructed by transitionless quantum driving, then, realize the W states' generation within this framework. For the sake of clearness, we describe two stale schemes for W states' generation via traditional methods: the adiabatic dark-state evolution and the quantum Zeno dynamics. The comparison among these three schemes shows the shortcut scheme is closely related to the other two but better than them. That is, numerical investigation demonstrates that the shortcut scheme is faster than the adiabatic one, and more robust against operational imperfection than the Zeno one. What is more, the present scheme is also robust against decoherence caused by spontaneous emission and photon loss.

11 pages, 9 figures

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• Fast generation of three-dimensional entanglement between two spatially separated atoms via invariant-based shortcut
• Zeno Dynamics of Quantum Chirps
• Accelerating adiabatic quantum transfer for three-level $\Lambda$-type structure systems via picture transformation
• Generation of perfectly entangled two and three qubits states by classical random interaction
• Quantum Zeno Effect on Genuine Tripartite Nonlocality and Entanglement in Quantum Dissipative System