Parametric controllable one-way quantum steering induced by four-wave mixing in cavity magnonics
Department of Physics, College of Science, Yanbian University, Yanji, Jilin, China
2 School of Physics, Harbin Institute of Technology, 150001, Harbin, Heilongjiang, China
3 Department of Physics, Southern University of Science and Technology, 518055, Shenzhen, China
Accepted: 13 May 2023
Published online: 19 May 2023
Quantum steering plays a crucial role in quantum communication and one-way quantum computation. Here, we study quantum steering between two magnon modes in a cavity-magnonics system by applying a two-photon drive field to the microwave cavity. The two magnon modes are entangled and the one-way steering can be implemented when the four-wave mixing is triggered. Different from most schemes that use the dissipation of the system to control quantum steering, in our scheme the one-way steering can be modulated on demand by adjusting the coherent coupling ratio between the two magnons and the cavity, which provides a flexible and feasible way in experiments. We also reveal that the directionality of quantum steering is related to the mode populations, i.e., the mode with a larger population dominants the steering. Our study has high manipulability and may provide a promising platform for one-way quantum computing and communications based on macroscopic entanglement state.
Key words: Four-wave mixing / Quantum entanglement / One-way quantum steering
© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2023
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