Results 21 to 30 of about 1,174 (142)
Many-Body Quantum Zeno Effect and Measurement-Induced Subradiance Transition [PDF]
Quantum, 2021 It is well known that by repeatedly measuring a quantum system it is possible to completely freeze its dynamics into a well defined state, a signature of the quantum Zeno effect.
Alberto Biella, Marco Schiró
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Super/subradiant second harmonic generation [PDF]
Laser Physics Letters, 2017 A scheme for active second harmonics generation is suggested. The system comprises $N$ three-level atoms in ladder configuration, situated into resonant cavity. It is found that the system can lase in either superradiant or subradiant regime, depending on the number of atoms $N$.
Koganov, Gennady A., Shuker, Reuben
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Optimal subradiant spin wave exchange in dipole-coupled atomic ring arrays
New Journal of Physics, 2023 The subwavelength array of quantum emitters provides an ideal platform for exploring rich many-body dynamics, such as super- and subradiance. In this paper, we explore the dynamics of spin wave exchange between two dipole-coupled atomic ring arrays ...
Yu-xiang Han +4 more
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Subradiant Bell States in Distant Atomic Arrays [PDF]
Physical Review Letters, 2019 We study collective `free-space' radiation properties of two distant single-layer arrays of quantum emitters as two-level atoms. We show that this system can support a long-lived Bell superposition state of atomic excitations exhibiting strong subradiance, which corresponds to a non-local excitation of the two arrays.
P.-O. Guimond +4 more
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Mean-Field Description of Cooperative Scattering by Atomic Clouds
Atoms, 2023 We present analytic expressions for the scattering of light by an extended atomic cloud. We obtain the solution for the mean-field excitation of different atomic spherical distributions driven by a uniform laser, including the initial build up, the ...
Nicola Piovella
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Dimerization of Many-Body Subradiant States in Waveguide Quantum Electrodynamics [PDF]
Physical Review Letters, 2021 We study theoretically subradiant states in the array of atoms coupled to photons propagating in a one-dimensional waveguide focusing on the strongly interacting many-body regime with large excitation fill factor $f$. We introduce a generalized many-body entropy of entanglement based on exact numerical diagonalization followed by a high-order singular ...
Alexander V. Poshakinskiy +1 more
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New Journal of Physics, 2022 Recent experimental advances enable the fabrication of photonic lattices in which the light propagates with engineered energy dispersions. When interfaced with quantum emitters, such systems yield strong collective spontaneous emission phenomena, such as
Alejandro González-Tudela
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Cooperative single-photon subradiant states [PDF]
Physical Review A, 2016 5 figures.
Jen, H. H., Chang, M. -S., Chen, Y. -C.
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Cooperativity of a few quantum emitters in a single-mode cavity [PDF]
, 2013 We theoretically investigate the emission properties of a single-mode cavity coupled to a mesoscopic number of incoherently pumped quantum emitters. We propose an operational measure for the medium cooperativity, valid both in the bad and in the good ...
Auffèves, Alexia +3 more
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Fluorescence dynamics of an ensemble of cold atoms [PDF]
EPJ Web of Conferences, 2019 We have calculated the fluorescence dynamics of cold atoms excited by pulsed radiation. We have considered both Radon-Nikodym spectral method and multi-stage relaxation model describing collective effects in cold atomic gases.
Bozhokin Sergey, Kuraptsev Alexey
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