State Carving in a Chirally-Coupled Atom-Nanophotonic Cavity

Abstract

Coherent quantum control of multiqubit systems represents one of the challenging tasks in quantum science and quantum technology. Here we theoretically investigate the reflectivity spectrum in an atom-nanophotonic cavity with collective nonreciprocal couplings. In the strong-coupling regime with a high cooperativity, we theoretically predict distinct on-resonance spectral dips owing to destructive interferences of chiral couplings. Due to the well-separated multiple dips in the spectrum, a contrasted reflectivity suggests a new control knob over the desired entangled state preparation. We propose to utilize such atom-nanophotonic cavity to quantum engineer the atomic internal states via photon-mediated dipole-dipole interactions and the chirality of decay channels, where the atomic Bell state and W states for arbitrary number of atoms can be tailored and heralded by state carving in the single-photon reflection spectrum. Our results pave the way toward quantum engineering of multiqubit states and offer new opportunities for coherent and scalable multipartite entanglement transport in atoms coupled to nanophotonic devices.

5 figures

References in corpus (24)

• Optomechanically induced transparency
• Chiral Quantum Optics
• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Nanophotonic quantum phase switch with a single atom
• Quantum Optics of Chiral Spin Networks
• Cooling a single atom in an optical tweezer to its quantum ground state
• Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains
• Quantum electrodynamics in a topological waveguide
• Mesoscopic Entanglement Induced by Spontaneous Emission in Solid-State Quantum Optics
• Cavity QED on a nanofiber using a composite photonic crystal cavity
• Entanglement transport and a nanophotonic interface for atoms in optical tweezers
• Defect-free arbitrary-geometry assembly of mixed-species atom arrays
• Collective radiative dynamics of an ensemble of cold atoms coupled to an optical waveguide
• A simple, passive design for large optical trap arrays for single atoms
• Efficient preparation of 2D defect-free atom arrays with near-fewest sorting-atom moves
• Bound and Subradiant Multi-Atom Excitations in an Atomic Array with Nonreciprocal Couplings
• Preparation of one ${}^{87}$Rb and one ${}^{133}$Cs atom in a single optical tweezer
• Steady-state Phase Diagram of a Weakly Driven Chiral-coupled Atomic Chain
• Disorder-assisted excitation localization in chirally coupled quantum emitters
• Quantum correlations of localized atomic excitations in a disordered atomic chain
• Superior dark-state cooling via nonreciprocal couplings in trapped atoms
• Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions
• Chiral-coupling-assisted refrigeration in trapped ions
• Observation of coherent coupling between super- and subradiant states of an ensemble of cold atoms collectively coupled to a single propagating optical mode

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