Exotic collective behaviors of giant quantum emitters in two-dimensional baths
- URL: http://arxiv.org/abs/2601.14867v1
- Date: Wed, 21 Jan 2026 10:52:06 GMT
- Title: Exotic collective behaviors of giant quantum emitters in two-dimensional baths
- Authors: Qing-Yang Qiu, Wen Huang, Lei Du, Xin-You Lü,
- Abstract summary: Phenomenologically, we observe the emergence of exotic photon emission patterns in both two- and three-dimensional baths.<n>Our generalization to a 3D bath reveals that coherent dipole-dipole interactions can survive despite the coupling to a continuum of modes.
- Score: 2.7342654118528067
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Nonlocal light-matter interactions with giant atoms in high-dimensional environments are not only fundamentally intriguing for testing quantum electrodynamics beyond the dipole approximation but also crucial for building high-dimensional quantum networks and engineering multipartite entangled states. Given the enigmatic and largely uncharted collective signatures exhibited by multiple giant atoms within two-dimensional optical baths, we delve into their nonperturbative collective dynamics within the single-excitation subspace, focusing on the case where they are coupled to a common two-dimensional photonic reservoir and employing a resolvent operator approach. We demonstrate that precisely engineered atomic arrangements lead to unconventional quantum dynamics, featuring non-Markovianity-induced beats and long-lived bound states in the continuum, thereby providing a versatile platform for implementing two-dimensional quantum memory. Phenomenologically, we observe the emergence of exotic photon emission patterns in both two- and three-dimensional (3D) baths. The emission directions are shown to be precisely controllable on demand through exact phase engineering of the coupling parameters, enabling a highly efficient chiral light-matter interface. Moreover, our generalization to a 3D bath reveals that coherent dipole-dipole interactions can survive despite the coupling to a continuum of modes, a finding that challenges conventional wisdom regarding decoherence.
Related papers
- Doublon bound states in the continuum through giant atoms [0.0]
Bound states in the continuum (BICs) are spatially localized modes embedded in the spectrum of extended states.<n>We show that giant atoms, quantum emitters coupled nonlocally to structured waveguides, can host robust doublon BICs.<n>Our results reveal an interference-based mechanism for stabilizing many-body localization in open quantum systems.
arXiv Detail & Related papers (2025-11-22T23:02:13Z) - Nonclassical Driven-Dissipative Dynamics in Collective Quantum Optics [51.56484100374058]
We study ensembles of interacting quantum emitters coherently driven by a laser field and coupled to photonic structures.<n>We find that off-resonant virtual states may gain population through dissipation, redefining their role in open systems.<n>Our models address challenges like inhomogeneous broadening and decoherence, demonstrating the feasibility of harnessing cooperative light-matter effects for quantum technologies.
arXiv Detail & Related papers (2025-09-12T20:01:55Z) - Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide.
When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits.
We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
arXiv Detail & Related papers (2024-08-30T15:54:33Z) - Exact solution for the collective non-Markovian decay of two fully excited quantum emitters [0.0]
We analyze a collective non-Markovian decay in a minimal system of two excited emitters coupled to a one-dimensional waveguide.
Our methods shed light on the complexity of collective light-matter interactions and open up a pathway for understanding multiparticle open quantum systems.
arXiv Detail & Related papers (2024-03-20T14:54:45Z) - Probing critical phenomena in open quantum systems using atom arrays [3.365378662696971]
At quantum critical points, correlations decay as a power law, with exponents determined by a set of universal scaling dimensions.
Here, we employ a Rydberg quantum simulator to adiabatically prepare critical ground states of both a one-dimensional ring and a two-dimensional square lattice.
By accounting for and tuning the openness of our quantum system, we are able to directly observe power-law correlations and extract the corresponding scaling dimensions.
arXiv Detail & Related papers (2024-02-23T15:21:38Z) - Non-Gaussian superradiant transition via three-body ultrastrong coupling [62.997667081978825]
We introduce a class of quantum optical Hamiltonian characterized by three-body couplings.
We propose a circuit-QED scheme based on state-of-the-art technology that implements the considered model.
arXiv Detail & Related papers (2022-04-07T15:39:21Z) - Localization and melting of interfaces in the two-dimensional quantum
Ising model [0.0]
We study the non-equilibrium evolution of coexisting ferromagnetic domains in the two-dimensional quantum Ising model.
We demonstrate that the quantum-fluctuating interface delimiting a large bubble can be studied as an effective one-dimensional system.
arXiv Detail & Related papers (2022-03-17T17:48:51Z) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - Exploring complex graphs using three-dimensional quantum walks of
correlated photons [52.77024349608834]
We introduce a new paradigm for the direct experimental realization of excitation dynamics associated with three-dimensional networks.
This novel testbed for the experimental exploration of multi-particle quantum walks on complex, highly connected graphs paves the way towards exploiting the applicative potential of fermionic dynamics in integrated quantum photonics.
arXiv Detail & Related papers (2020-07-10T09:15:44Z) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.