Results 61 to 70 of about 1,174 (142)

Femtosecond Light Transmission and Subradiant Damping in Plasmonic Crystals

open access: yesPhysical Review Letters, 2005
We report the first observation of subradiance in plasmonic nanocrystals. Amplitude- and phase-resolved ultrafast transmission experiments directly reveal the coherent coupling between surface plasmon polaritons (SPPs) induced by periodic variations in the dielectric function. This interaction results in the formation of plasmonic band gaps and coupled
Ropers, C   +6 more
openaire   +5 more sources

Cooperativity in light scattering by cold atoms

open access: yes, 2012
A cloud of cold N two-level atoms driven by a resonant laser beam shows cooperative effects both in the scattered radiation field and in the radiation pressure force acting on the cloud center-of-mass.
Bachelard, Romain   +3 more
core   +1 more source

Cooperative states and shift in resonant scattering of an atomic ensemble

open access: yesNew Journal of Physics
We investigate the spectral shift known as the collective Lamb shift in forward scattering for a cold dense atomic cloud. The shift results from resonant dipole–dipole interaction mediated by real and virtual photon exchange, forming many-body states ...
Ting Hsu, Kuan-Ting Lin, Guin-Dar Lin
doaj   +1 more source

Cooperative Decay of an Ensemble of Atoms in a One-Dimensional Chain with a Single Excitation

open access: yesAtoms
We propose a new expression of the cooperative decay rate of a one-dimensional chain of N two-level atoms in the single-excitation configuration. From it, the interference nature of superradiance and subradiance arises naturally, without the need to ...
Nicola Piovella
doaj   +1 more source

Quantum Simulation of Dissipative Collective Effects on Noisy Quantum Computers

open access: yesPRX Quantum, 2023
Dissipative collective effects are ubiquitous in quantum physics and their relevance ranges from the study of entanglement in biological systems to noise mitigation in quantum computers.
Marco Cattaneo   +4 more
doaj   +1 more source

Preparation of Subradiant States using Local Qubit Control in Circuit QED

open access: yes, 2011
Transitions between quantum states by photon absorption or emission are intimately related to symmetries of the system which lead to selection rules and the formation of dark states.
A. Abragam   +7 more
core   +1 more source

Interaction-free evolution in the presence of time-dependent Hamiltonians [PDF]

open access: yes, 2015
The generalization of the concept of interaction-free evolutions (IFE) [A. Napoli, {\it et al.}, Phys. Rev. A {\bf 89}, 062104 (2014)] to the case of time-dependent Hamiltonians is discussed. It turns out that the time-dependent case allows for much more
Chruściński, Dariusz   +3 more
core   +2 more sources

Electromagnetically induced transparency with superradiant and subradiant states

open access: yesPhysical Review A, 2017
5 pages, 4 ...
Feng, Wei   +4 more
openaire   +3 more sources

Cooperative spontaneous emission from indistinguishable atoms in arbitrary motional quantum states

open access: yes, 2016
We investigate superradiance and subradiance of indistinguishable atoms with quantized motional states, starting with an initial total state that factorizes over the internal and external degrees of freedom of the atoms. Due to the permutational symmetry
Braun, D., Damanet, F., Martin, J.
core   +1 more source

Subradiant entanglement in plasmonic nanocavities

open access: yesPhysical Review B
Plasmonic nanocavities are known for their extreme field enhancement and subwavelength light confinement in gaps of just a few nanometers. Pairing this with the ability to host quantum emitters, they form highly promising platforms to control or engineer quantum states at room temperature. Here, we use the lossy nature of plasmonic nanocavities to form
Kalun Bedingfield   +2 more
openaire   +2 more sources

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