Subradiance-protected excitation transport [PDF]
New Journal of Physics, 2019 We explore excitation transport within a one-dimensional chain of atoms where the atomic transition dipoles are coupled to the free radiation field. When the atoms are separated by distances smaller or comparable to the wavelength of the transition, the ...
Jemma A Needham +2 more
doaj +4 more sources
Subradiance and radiation trapping in cold atoms
New Journal of Physics, 2018 We experimentally and numerically study the temporal dynamics of light scattered by large clouds of cold atoms after the exciting laser is switched off, in the low intensity (linear-optics) regime. Radiation trapping due to multiple scattering as well as
Patrizia Weiss +3 more
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Subradiance-protected excitation spreading in the generation of collimated photon emission from an atomic array [PDF]
Physical Review Research, 2020 We show how an initial localized radiative excitation in a two-dimensional array of cold atoms can be converted into highly directional coherent emission of light by protecting the spreading of the excitation across the array in a subradiant collective ...
K E Ballantine
exaly +3 more sources
Exponential Improvement in Photon Storage Fidelities Using Subradiance and “Selective Radiance” in Atomic Arrays [PDF]
Physical Review X, 2017 A central goal within quantum optics is to realize efficient, controlled interactions between photons and atomic media. A fundamental limit in nearly all applications based on such systems arises from spontaneous emission, in which photons are absorbed ...
A Asenjo-García +2 more
exaly +3 more sources
Synchronization and subradiance as signatures of entangling bath between superconducting qubits [PDF]
Annalen der Physik, Volume 533, Issue 5, May 2021., 2020 A common environment acting on two superconducting qubits can give rise to a plethora of phenomena, such as the generation of entanglement between the qubits that, beyond its importance for quantum computation tasks, also enforces a change of strategy ...
Marco Cattaneo +9 more
core +2 more sources
Subradiance Generation in a Chain of Two-Level Atoms with a Single Excitation [PDF]
AtomsStudies of subradiance in a chain N two-level atoms in the single excitation regime focused mainly on the complex spectrum of the effective Hamiltonian, identifying subradiant eigenvalues.
Nicola Piovella
doaj +2 more sources
Deterministic steady-state subradiance within a single-excitation basis
npj Quantum InformationSubradiance shows promising applications in quantum information, yet its realization remains more challenging than superradiance due to the need to suppress various decay channels. This study introduces a state space within a single-excitation basis with
Meng-Jia Chu, Jun Ren, Z. D. Wang
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Storage and Release of Subradiant Excitations in a Dense Atomic Cloud [PDF]
Physical Review X, 2021 We report the observation of subradiance in dense ensembles of cold ^{87}Rb atoms operating near Dicke’s regime of a large number of atoms in a volume with dimensions smaller than the transition wavelength.
Giovanni Ferioli +4 more
doaj +5 more sources
Robustness of Dicke subradiance against thermal decoherence [PDF]
Physical Review A, 2019 Subradiance is the cooperative inhibition of the radiation by several emitters coupled to the same electromagnetic modes. It was predicted by Dicke in 1954 and only recently observed in cold atomic vapors. Here we address the question to what extent this
M. O. Araújo (17508438) +4 more
core +4 more sources
Super- and subradiance of clock atoms in multimode optical waveguides
New Journal of Physics, 2019 The transversely confined propagating modes of an optical fiber mediate virtually infinite range energy exchanges among atoms placed within their field, which adds to the inherent free space dipole–dipole coupling.
Laurin Ostermann +3 more
doaj +2 more sources