Bound states in the continuum in subwavelength emitter arrays
- URL: http://arxiv.org/abs/2301.08804v1
- Date: Fri, 20 Jan 2023 21:02:38 GMT
- Title: Bound states in the continuum in subwavelength emitter arrays
- Authors: Paloma A. Huidobro and Maria Blanco de Paz
- Abstract summary: We show how bound states in the continuum (BICs) which are completely decoupled from radiative states emerge in non-Bravais lattices of emitters.
We discuss how thanks to the quasi-BICs, a rich phenomenology takes place in the reflectivity spectrum, with asymmetric Fano resonances and an electromagnetically induced transparency window.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Ordered lattices of emitters with subwavelength periodicities support
unconventional forms of light-matter interactions arising from collective
effects. Here, we propose the realization and control of subradiant optical
states within the radiation continuum in two-dimensional lattices. We show how
bound states in the continuum (BICs) which are completely decoupled from
radiative states emerge in non-Bravais lattices of emitters. Symmetry breaking
results in quasi-BICs with greatly extended lifetimes, which can be exploited
for quantum information storage. The analytical derivation of a generalized
effective polarizability tensor allows us to study the optical response of
these arrays. We discuss how thanks to the quasi-BICs, a rich phenomenology
takes place in the reflectivity spectrum, with asymmetric Fano resonances and
an electromagnetically induced transparency window. Finally, we exploit these
lattices as quantum metasurfaces acting as efficient light polarizers.
Related papers
- Spontaneously induced emitter-radiation entanglement due to confinement to photonic band gap [0.0]
Study of spontaneously induced nonclassicality as a result of the interaction of an ensemble of two-level emitters embedded onto crystal structure embodying photonic band gap (PBG)
The state of the coupled system is found to exhibit entanglement and nonclassical intensity correlation attributed to the confinement, where intensity of the emitted radiation and degree of entanglement are enhanced near the edge.
arXiv Detail & Related papers (2024-10-22T09:26:56Z) - Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations.
One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them.
Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
arXiv Detail & Related papers (2023-12-04T15:35:41Z) - Attaining near-ideal Dicke superradiance in expanded spatial domains [0.0]
Superradiance for arrays of inverted emitters in free space requires interactions far beyond the nearest-neighbor.
Epsilon-near-zero (ENZ) materials, which exhibit infinite effective wavelengths, can mediate long-range interactions between emitters.
We employ a general method to assess the occurrence of superradiance, which is applicable to various coupling scenarios.
The findings of this work have prospective applications in quantum information processing and light-matter interaction.
arXiv Detail & Related papers (2023-11-30T08:01:57Z) - Dissipative transfer of quantum correlations from light to atomic arrays [0.0]
We consider an atomic array illuminated by a paraxial beam of a squeezed-vacuum field.
quantum-squeezing correlations are dissipatively transferred to the array atoms, resulting in an atomic spin-squeezed steady state.
We discuss applications in atomic clocks both in optical and microwave domains.
arXiv Detail & Related papers (2023-11-07T11:22:58Z) - Correlated steady states and Raman lasing in continuously pumped and
probed atomic ensembles [68.8204255655161]
We consider an ensemble of Alkali atoms that are continuously optically pumped and probed.
Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state.
We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
arXiv Detail & Related papers (2022-05-10T06:54:54Z) - Connecting steady-states of driven-dissipative photonic lattices with
spontaneous collective emission phenomena [91.3755431537592]
We use intuition to predict the formation of non-trivial photonic steady-states in one and two dimensions.
We show that subradiant emitter configurations are linked to the emergence of steady-state light-localization in the driven-dissipative setting.
These results shed light on the recently reported optically-defined cavities in polaritonic lattices.
arXiv Detail & Related papers (2021-12-27T23:58:42Z) - Heralded spectroscopy reveals exciton-exciton correlations in single
colloidal quantum dots [0.8911822441893501]
We introduce biexciton heralded spectroscopy, enabled by a single-photon avalanche diode array based spectrometer.
This allows us to directly observe biexciton-exciton emission cascades and measure the biexciton binding energy of single quantum dots at room temperature.
We uncover correlations hitherto masked in ensembles, of the biexciton binding energy with both charge-carrier confinement and fluctuations of the local electrostatic potential.
arXiv Detail & Related papers (2021-08-01T00:41:57Z) - Waveguide quantum electrodynamics: collective radiance and photon-photon
correlations [151.77380156599398]
Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters.
We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
arXiv Detail & Related papers (2021-03-11T17:49:52Z) - Light-matter interactions near photonic Weyl points [68.8204255655161]
Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point.
We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
arXiv Detail & Related papers (2020-12-23T18:51:13Z) - Super- and subradiance by entangled free particles [0.0]
We show how a pair of path-entangled electrons can demonstrate either super- or subradiant light emission.
By choosing different free-electron Bell-states, the spectrum and emission pattern of the light can be reshaped.
Our findings suggest that light emission can be sensitive to the explicit quantum state of the emitting matter wave.
arXiv Detail & Related papers (2020-11-04T21:26:44Z) - 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.