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    Area of Science:

    • Quantum Optics
    • Cavity Quantum Electrodynamics
    • Nonlinear Optics

    Background:

    • Photon blockade is crucial for quantum information processing, enabling the control of single photons.
    • Nonreciprocal devices are essential for signal isolation and preventing back-propagation in quantum circuits.
    • Spinning cavities introduce unique spatio-temporal effects due to relativistic phenomena.

    Purpose of the Study:

    • To propose and theoretically investigate a scheme for achieving nonreciprocal conventional photon blockade.
    • To explore the role of atom-cavity detuning and dual-side driving in generating this effect.
    • To leverage the Fizeau-Sagnac drag in spinning cavities for directional photon control.

    Main Methods:

    • Theoretical modeling of a nonlinear system comprising an atom and a spinning cavity.
    • Manipulation of the detuning between the atom and the cavity.
    • Applying driving fields to different sides of the spinning resonator to induce photon-induced tunneling.
    • Analyzing the impact of Fizeau-Sagnac drag on resonance frequencies of counter-circulating modes.

    Main Results:

    • Demonstration of a scheme to achieve nonreciprocal conventional photon blockade.
    • Single-photon blockade generation is shown by asymmetric driving of the spinning resonator.
    • The Fizeau-Sagnac drag is identified as the underlying mechanism for the observed nonreciprocity.
    • Four optimal solutions for Fizeau-Sagnac shifts are presented for arbitrary detunings.

    Conclusions:

    • The proposed scheme offers a viable method for creating nonreciprocal photon blockade in spinning cavity systems.
    • This work provides a pathway for developing advanced quantum optical devices with directional single-photon control.
    • The findings highlight the potential of exploiting relativistic effects in engineered quantum systems.