We propose a concise and deterministic protocol to generate NOON states in a hybrid system using Floquet engineering. Our protocol is based on a superconducting qubit, a circuit resonator mode, and two magnonic modes. We show that an arbitrary magnonic NOON state can be generated by a typical preparing and-measurement procedure. We also analyze the robustness of our protocol against various systematic errors.
We propose a concise and deterministic protocol to generate NOON states in a hybrid system consisting of a superconducting qubit, a circuit resonator mode, and two magnonic modes, based on Floquet engineering. In particular, we construct a time-reversal-symmetry broken Hamiltonian for chiral state propagation of the three continuous-variable modes depending on qubit state, by the time modulation over qubit-resonator interaction and magnon frequency. Then, an arbitrary magnonic NOON state can be generated by a typical preparing and-measurement procedure. We analyze the robustness of our protocol against the systematic errors in the qubit-magnon coupling strength, the Floquet-driving intensity, the frequency mismatch of the magnons, and the counterrotating interactions. We can obtain a high-fidelity NOON state in the presence of quantum dissipation on all components.
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