Driven anti-Bragg subradiant states in waveguide quantum electrodynamics

Abstract

We study theoretically driven quantum dynamics in periodic arrays of two-level qubits coupled to the waveguide. We demonstrate, that strongly subradiant eigenstates of the master equation for the density matrix emerge under strong coherent driving for arrays with the anti-Bragg periods $d=\lambda /4,3\lambda /4$... This happens even though are no such states at low driving powers. Thus, our findings show that in the quantum nonlinear regime the domain of existence of subradiant states expands beyond conventional subwavelength structures. These driven states are directly manifested in long-living quantum correlations between the qubit excitations.

5 pages, 5 figures

References in corpus (3)

• Photon-mediated interactions between distant artificial atoms
• Discrete Time-Crystalline Order in Cavity and Circuit QED Systems
• Collective bosonic effects in an array of transmon devices

Cited by in corpus (6)

• Non-Hermitian Waveguide Cavity QED with Tunable Atomic Mirrors
• Dynamic population of multiexcitation subradiant states in incoherently excited atomic arrays
• Dispersionless subradiant photon storage in one-dimensional emitter chains
• Subradiant edge states in an atom chain with waveguide-mediated hopping
• Persistent subradiant correlations in a random driven Dicke model
• Strongly Confined Atomic Excitation Localization in a Weakly-Driven Atom-Waveguide Interface