Chirality-induced one-way quantum steering between two waveguide-mediated ferrimagnetic microspheres

Abstract

One-way quantum steering is of importance for quantum technologies, such as secure quantum teleportation. In this paper, we study the generation of one-way quantum steering between two distant yttrium iron garnet (YIG) microspheres in chiral waveguide electromagonics. We consider that the magnon mode with the Kerr nonlinearity in each YIG sphere is chirally coupled to left- and right-propagating guided photons in the waveguide. We find that quantum steering between the magnon modes is absent with non-chirality but is present merely in the form of one way (i.e., one-way steering) when the chirality occurs. The maximal achievable steering is obviously improved as the chirality degree increases. We further find that when the waveguide's outputs are subjected to continuous homodyne detection, the steering can be considerably enhanced and asymmetric steering with strong entanglement can also be achieved by tuning the chirality. Our study shows that chirality can be explored to effectively realize one-way quantum steering. Compared to other studies on achieving asymmetric steering via controlling intrinsic dissipation, e.g. cavity loss rates, our scheme merely depends on the chirality enabled via positioning the micromagnets in the waveguide and is continuously adjustable and experimentally more feasible.

12 pages, 8 figures

References in corpus (23)

• Chiral Quantum Optics
• Steering, Entanglement, Nonlocality, and the EPR Paradox
• Optomechanical entanglement between a movable mirror and a cavity field
• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• High Cooperativity Cavity QED with Magnons at Microwave Frequencies
• Entanglement of two qubits mediated by one-dimensional plasmonic waveguides
• Photon-mediated interactions between distant artificial atoms
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
• Einstein-Podolsky-Rosen steering provides the advantage in entanglement-assisted subchannel discrimination with one-way measurements
• Quantification of Gaussian quantum steering
• Observation of one-way Einstein-Podolsky-Rosen steering
• Magnon Kerr effect in a strongly coupled cavity-magnon system
• Quantum optical circulator controlled by a single chirally coupled atom
• Quantum Optics of Chiral Spin Networks
• Triple-resonant Brillouin light scattering in magneto-optical cavities
• Dissipation-based Quantum Sensing of Magnons with a Superconducting Qubit
• Controlling entanglement by direct quantum feedback
• Long-Time Memory and Ternary Logic Gate Using a Multistable Cavity Magnonic System
• Steady-state one-way Einstein-Podolsky-Rosen steering in optomechanical interfaces
• Experimental demonstration of remotely creating Wigner negativity via quantum steering
• Fiber ring resonator with nanofiber section for chiral cavity quantum electrodynamics and multimode strong coupling
• Theory of microwave single-photon detection using an impedance-matched $\Lambda$ system