Phase-controlled multimagnon blockade and magnon-induced tunneling in a hybrid superconducting system

Kun Wu; Wen-xue Zhong; Guang-ling Cheng; Ai-xi Chen

doi:10.1103/PhysRevA.103.052411

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Phase-controlled multimagnon blockade and magnon-induced tunneling in a hybrid superconducting system

Kun Wu, Wen-xue Zhong, Guang-ling Cheng, Ai-xi Chen

DOI 10.1103/PhysRevA.103.052411 · Physical Review A

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Abstract

We study the multimagnon blockade and magnon-induced tunneling in the hybrid ferromagnet-superconductor system, where a magnon mode representing the collective motion of spins in the yttrium iron garnet (YIG) sphere is coupled with a three-level Δ-type fluxonium qubit via the virtual-photon excitation from the microwave cavity. By appropriately choosing the parameters, the single magnon blockade, multimagnon blockade including two- and three-magnon blockades, and magnon-induced tunneling could be achieved. Fortunately, the switch from magnon blockade to magnon-induced tunneling could be obtained via controlling the overall phase of the loop transition determined by the driving fields. Furthermore, the single-magnon blockade could be transformed into a multimagnon blockade via the phase modulation. The scheme we present may provide an alternative method to manipulate the few-magnon states and have potential applications in quantum communication and quantum information processing.