Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems

Abstract

Very recently, dissipative coupling was discovered, which develops and broadens methods for controlling and utilizing light-matter interactions. Here, we propose a scheme to generate the tripartite $W$ state in a dissipatively coupled system, where one qubit and two resonators simultaneously interact with a common reservoir. With appropriate parameters, we find the $W$ state is a dark state of the system. By driving the qubit, the dissipatively coupled system will evolve from the ground state to the tripartite $W$ state. Because the initial state is the ground state of the system and no measurement is required, our scheme is easy to implement in experiments. Moreover, the $W$ state decouples from the common reservoir and thus has a very long lifetime. This scheme is applicable to a wide class of dissipatively coupled systems, and we specifically illustrate how to prepare the $W$ state in a hybrid qubit-photon-magnon system by using this scheme.

10 pages, 5 figures

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Cited by in corpus (12)

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• Switchable Superradiant Phase Transition with Kerr Magnons
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• Dicke-state preparation through global transverse control of Ising-coupled qubits
• Generating Bell states and $N$-partite $W$ states of long-distance qubits in superconducting waveguide QED
• Nonreciprocal quantum phase transition in cavity magnonics
• Spin squeezing in internal bosonic Josephson junctions via enhanced shortcuts to adiabaticity
• Twist-and-turn dynamics of spin squeezing in bosonic Josephson junctions: Enhanced shortcuts-to-adiabaticity approach
• Controllable non-Hermitian qubit-qubit Coupling in Superconducting quantum Circuit
• Explosive growth of bistability in a cavity magnonic system
• Harnessing subspace controllability: Dynamical generation of Dicke states in Heisenberg-coupled qubit arrays with a single local control