Results 71 to 80 of about 367 (159)
Strong interactions and subradiance in disordered metamaterials [PDF]
Physical Review B, 2018 We provide detailed comparisons between experimental findings and numerical simulations of large coopera- tively interacting, spatially disordered metamaterial arrays, consisting of asymmetrically split rings. Simulation methods fully incorporate strong field-mediated inter-meta-atom interactions between discrete resonators and statistical properties ...
Jenkins, Stewart D. +4 more
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Cooperative Decay of N Atoms in a Ring Configuration
AtomsWe provide an analytic expression of the spectrum of the cooperative decay rate of N two-level atoms regularly distributed on a ring in the single-excitation configuration.
Nicola Piovella
doaj +1 more source
Subradiant entanglement in plasmonic nanocavities
Physical Review BPlasmonic 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
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Phase-imprinted multiphoton subradiant states [PDF]
Physical Review A, 2017 We propose to generate the multiphoton subradiant states and investigate their fluorescences in an array of two-level atoms. These multiphoton states are created initially from the timed-Dicke states. Then we can use either a Zeeman or Stark field gradient pulse to imprint linearly increasing phases on the atoms, and this phase-imprinting process ...
openaire +2 more sources
Recoil-induced subradiance in an ultracold atomic gas
, 2009 Subradiance, i.e., the cooperative inhibition of spontaneous emission by destructive interatomic interference, can be realized in a cold atomic sample confined in a ring cavity and lightened by a two-frequency laser.
M. Cola, N. U. C. Piovella, D. Bigerni
core +1 more source
Measurement Induced Subradiance
Preparing subradiant steady states of collectively emitting quantum two-level emitters (TLEs) is hindered by their dark, weakly interacting nature. Existing approaches rely on patterned driving, local control, or structured environments. We propose a platform-independent protocol based on projective measurements on a single TLE.
Bar, Ipsita +2 more
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Super- and subradiance by entangled free particles
, 2020 When multiple quantum emitters radiate, their emission rate may be enhanced or suppressed due to collective interference in a process known as super- or subradiance. Such processes are well-known to occur also in light emission by free charged particles.
Karnieli, Aviv +3 more
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Two-photon superradiance and subradiance
Physical Review AWe consider the problem of two-photon cooperative emission in systems of two-level atoms. Two physically distinct regimes are analyzed. First, we investigate the case of a small number of atoms. We study the evolution of two-photon super- and sub-radiant states and associated two-photon spectra.
Wenxuan Xie +2 more
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Tunable multi-qubit quantum phase gates with high fidelity based on graphene wrapped particle
AIP Advances, 2016 A graphene wrapped dielectric particle has been proposed theoretically to realize tunable multi-qubit quantum phase gates (QPGs) with ultrahigh fidelity.
Jun Ren +3 more
doaj +1 more source
Controlling molecular broadband-emission by optical confinement [PDF]
, 2008 We investigate experimentally and theoretically the fluorescence emitted by molecular ensembles as well as spatially isolated, single molecules of an organic dye immobilized in a quasi-planar optical microresonator at room temperature.
Steiner, Mathias +5 more
core +1 more source