Giant atoms with time-dependent couplings

Abstract

We study the decay dynamics of a two-level giant atom that is coupled to a waveguide with time-dependent coupling strengths. In the non-Markovian regime where the retardation effect cannot be ignored, we show that the dynamics of the atom depends on the atom-waveguide coupling strengths at an earlier time. This allows one to tailor the decay dynamics of the giant atom and even realize a stationary population revival with appropriate coupling modulations. Moreover, we demonstrate the possibility of simulating the quantum Zeno and quantum anti-Zeno effects in the giant-atom model with periodic coupling quenches. These results have potential applications in quantum information processing and quantum network engineering.

9 pages, 5 figures

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Cited by in corpus (27)

• Nonreciprocal and chiral single-photon scattering for giant atoms
• Generation of maximally-entangled long-lived states with giant atoms in a waveguide
• Non-Markovian disentanglement dynamics in double-giant-atom waveguide-QED systems
• Single-photon scattering in a giant-molecule waveguide-QED system
• Collective Radiance of Giant Atoms in Non-Markovian Regime
• Chiral and nonreciprocal single-photon scattering in a chiral-giant-molecule waveguide-QED system
• Many-body superradiance and dynamical mirror symmetry breaking in waveguide QED
• Complex decoherence-free interactions between giant atoms
• Interaction between giant atoms in a one-dimensional structured environment
• Generation of two-giant-atom entanglement in waveguide-QED systems
• Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide
• Ultrastrong waveguide QED with giant atoms
• Avoiding decoherence with giant atoms in a two-dimensional structured environment
• Non-perturbative treatment of giant atoms using chain transformations
• A giant atom with modulated transition frequency
• Giant Emitters in a Structured Bath with Non-Hermitian Skin Effect
• Unconventional Quantum Electrodynamics with Hofstadter-Ladder Waveguide
• Quantum speed limit for complex dynamics
• Non-Markovian dynamics with a driven three-level giant atom in a semi-infinite photonic waveguide
• Circuit QED with a Giant Atom Coupling to Left-handed Superlattice Metamaterials
• Simulating open quantum systems with giant atoms
• Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• Selective band interaction and long-range hopping in a structured environment with giant atoms
• Scalable quantum simulator with an extended gate set in giant atoms
• Strongly coupled giant-atom waveguide quantum electrodynamics
• Exotic collective behaviors of giant quantum emitters in two-dimensional baths