A giant atom with modulated transition frequency

Abstract

Giant atoms are known for the frequency-dependent spontaneous emission and associated interference effects. In this paper, we study the spontaneous emission dynamics of a two-level giant atom with dynamically modulated transition frequency. It is shown that the retarded feedback effect of the giant-atom system is greatly modified by a dynamical phase arising from the frequency modulation and the retardation effect itself. Interestingly, such a modification can in turn suppress the retarded feedback such that the giant atom behaves like a small one. By introducing an additional phase difference between the two atom-waveguide coupling paths, we also demonstrate the possibility of realizing chiral and tunable temporal profiles of the output fields. The results in this paper have potential applications in quantum information processing and quantum network engineering.

10 pages, 5 figures

References in corpus (24)

• Chiral Quantum Optics
• Controllable scattering of photons inside a one-dimensional resonator waveguide
• Theory of single-photon transport in a single-mode waveguide coupled to a cavity containing a two-level atom
• Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
• Coherence times of dressed states of a superconducting qubit under extreme driving
• Resolved Sideband Emission of InAs/GaAs Quantum Dots Strained by Surface Acoustic Waves
• Dynamics of spontaneous emission in a single-end photonic waveguide
• Non-reciprocal few-photon devices based on chiral waveguide-emitter couplings
• Nonreciprocal and chiral single-photon scattering for giant atoms
• Chiral Quantum Network with Giant Atoms
• Giant Atoms in a Synthetic Frequency Dimension
• Photonic simulation of giant atom decay
• Qubit-photon bound states in topological waveguides with long-range hoppings
• Coherent single-photon scattering spectra for a giant-atom waveguide-QED system beyond dipole approximation
• Single-photon frequency conversion via a giant $\Lambda$-type atom
• Single-photon scattering in a giant-molecule waveguide-QED system
• Excite atom-photon bound state inside the coupled-resonator waveguide coupled with a giant atom
• Collective Radiance of Giant Atoms in Non-Markovian Regime
• Giant atoms with time-dependent couplings
• Manipulating single-photon transport in a waveguide-QED structure containing two giant atoms
• Interaction between giant atoms in a one-dimensional structured environment
• Introduction to quantum non-reciprocal interactions: from non-Hermitian Hamiltonians to quantum master equations and quantum feedforward schemes
• Quantum dynamics of a two-level emitter with modulated transition frequency
• Clock frequency estimation under spontaneous emission

Cited by in corpus (12)

• Generation of maximally-entangled long-lived states with giant atoms in a waveguide
• Interaction between giant atoms in a one-dimensional structured environment
• Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide
• Quantum interference and controllable magic cavity QED via a giant atom in coupled resonator waveguide
• Avoiding decoherence with giant atoms in a two-dimensional structured environment
• 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
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• Floquet Engineering and Harnessing Giant Atoms in Frequency-Comb Emission and Bichromatic Correlations in Waveguide QED
• Selective band interaction and long-range hopping in a structured environment with giant atoms
• Exotic collective behaviors of giant quantum emitters in two-dimensional baths
• Non-Markovian exceptional points in waveguide quantum electrodynamics