Interaction between giant atoms in a one-dimensional structured environment

Abstract

Giant atoms -- quantum emitters that couple to light at multiple discrete points -- are emerging as a new paradigm in quantum optics thanks to their many promising properties, such as decoherence-free interaction. While most previous work has considered giant atoms coupled to open continuous waveguides or a single giant atom coupled to a structured bath, here we study the interaction between two giant atoms mediated by a structured waveguide, e.g., a photonic crystal waveguide. This environment is characterized by a finite energy band and a band gap, which affect atomic dynamics beyond the Markovian regime. Here we show that, inside the band, decoherence-free interaction is possible for different atom-cavity detunings, but is degraded from the continuous-waveguide case by time delay and other non-Markovian effects. Outside the band, where atoms interact through the overlap of bound states, we find that giant atoms can interact more strongly and over longer distances than small atoms for some parameters -- for instance, when restricting the maximum coupling strength achievable per coupling point. The results presented here may find applications in quantum simulation and quantum gate implementation.

15 pages, 10 figures

References in corpus (14)

• Propagating phonons coupled to an artificial atom
• Subwavelength vacuum lattices and atom-atom interactions in photonic crystals
• Phonon-mediated quantum state transfer and remote qubit entanglement
• Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
• Engineering and harnessing giant atoms in high-dimensional baths: a cold atoms' implementation
• Chiral Quantum Network with Giant Atoms
• Giant Atoms in a Synthetic Frequency Dimension
• Qubit-assisted transduction for a detection of surface acoustic waves near the quantum limit
• Photonic simulation of giant atom decay
• Extensible quantum simulation architecture based on atom-photon bound states in an array of high-impedance resonators
• Qubit-photon bound states in topological waveguides with long-range hoppings
• Excite atom-photon bound state inside the coupled-resonator waveguide coupled with a giant atom
• Giant atoms with time-dependent couplings
• A giant atom with modulated transition frequency

Cited by in corpus (27)

• Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide
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• Avoiding decoherence with giant atoms in a two-dimensional structured environment
• Quantum optics with giant atoms in a structured photonic bath
• A giant atom with modulated transition frequency
• Giant Emitters in a Structured Bath with Non-Hermitian Skin Effect
• Quantum light-matter interactions in structured waveguides
• Atom-photon dressed states in a waveguide-QED system with multiple giant atoms
• Single-photon scattering in giant-atom topological-waveguide-QED systems
• 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
• Band engineering and study of disorder using topology in compact high kinetic inductance cavity arrays
• Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• Unconventional and robust light-matter interactions based on the non-Hermitian skin effect
• Simulating and probing many-body quantum states in waveguide-QED systems with giant atoms
• Exact solution for the collective non-Markovian decay of two fully excited quantum emitters
• Giant atoms coupled to waveguide: Continuous coupling and multiple excitations
• 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
• Nonlinear cascaded quantum network with giant emitters
• Non-Markovian exceptional points in waveguide quantum electrodynamics
• Oscillating bound states in waveguide-QED system with two giant atoms
• Strongly coupled giant-atom waveguide quantum electrodynamics
• Engineering giant transmon molecules as mediators of conditional two-photon gates