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Hyperfine structure splitting of molecular-iodine transitions near 716 nm Huet, Nicolas ; Krins, Stéphanie ; et al Poster (2010) Detailed reference viewed: 33 (2 ULg)Isotope shifts and hyperfine structure of the Fe I 373.7 nm resonance line Krins, Stéphanie ; Huet, Nicolas ; Bastin, Thierry Poster (2010) Detailed reference viewed: 11 (2 ULg)Heralded entanglement of arbitrary degree in remote atoms by detection of emitted photons ; ; et al Poster (2010) Detailed reference viewed: 9 (2 ULg)Generation of all Symmetric and all Total Angular Momentum Eigenstates in Remote Qubits ; ; Bastin, Thierry et al Poster (2010) Detailed reference viewed: 11 (1 ULg)Trapping particles by optical tweezers Dujardin, Julien ; Bastin, Thierry ; Vandewalle, Nicolas Poster (2010) Detailed reference viewed: 67 (22 ULg)Operational multipartite entanglement classes for symmetric photonic qubit states ; ; Krins, Stéphanie et al in Physical Review. A (2010), 81 We present experimental schemes that allow us to study the entanglement classes of all symmetric states in multiqubit photonic systems. We compare the efficiency of the proposed schemes and highlight the ... [more ▼] We present experimental schemes that allow us to study the entanglement classes of all symmetric states in multiqubit photonic systems. We compare the efficiency of the proposed schemes and highlight the relation between the entanglement properties of symmetric Dicke states and a recently proposed entanglement scheme for atoms. In analogy to the latter, we obtain a one-to-one correspondence between well-defined sets of experimental parameters and multiqubit entanglement classes inside the symmetric subspace of the photonic system. [less ▲] Detailed reference viewed: 39 (11 ULg)Tunable entanglement, antibunching, and saturation effects in dipole blockade Gillet, Jérémie ; ; Bastin, Thierry in Physical Review. A (2010), 81 We report a model that makes it possible to analyze quantitatively the dipole blockade effect on the dynamical evolution of a two two-level atom system driven by an external laser field. The multiple ... [more ▼] We report a model that makes it possible to analyze quantitatively the dipole blockade effect on the dynamical evolution of a two two-level atom system driven by an external laser field. The multiple excitations of the atomic sample are taken into account. We find very large concurrence in the dipole blockade regime. We further find that entanglement can be tuned by changing the intensity of the exciting laser. We also report a way to lift the dipole blockade paving the way to manipulate in a controllable way the blockade effects. We finally report how a continuous monitoring of the dipole blockade would be possible using photon-photon correlations of the scattered light in a regime where the spontaneous emission would dominate dissipation in the sample. [less ▲] Detailed reference viewed: 38 (14 ULg)Entanglement equivalence of N-qubit symmetric states Mathonet, Pierre ; Krins, Stéphanie ; et al in Physical Review. A (2010), 81 We study the interconversion of multipartite symmetric N-qubit states under stochastic local operations and classical communication (SLOCC). We demonstrate that if two symmetric states can be connected ... [more ▼] We study the interconversion of multipartite symmetric N-qubit states under stochastic local operations and classical communication (SLOCC). We demonstrate that if two symmetric states can be connected with a nonsymmetric invertible local operation (ILO), then they belong necessarily to the separable, W, or Greenberger-Horne-Zeilinger (GHZ) entanglement class, establishing a practical method of discriminating subsets of entanglement classes. Furthermore, we prove that there always exists a symmetric ILO connecting any pair of symmetric N-qubit states equivalent under SLOCC, simplifying the requirements for experimental implementations of local interconversion of those states. [less ▲] Detailed reference viewed: 42 (12 ULg)Tunable entanglement, antibunching and saturation effects in dipole blockade Gillet, Jérémie ; ; Bastin, Thierry Poster (2010) Detailed reference viewed: 24 (10 ULg)Operational multipartite entanglement classes for symmetric photonic qubit states ; ; Krins, Stéphanie et al Poster (2010) Detailed reference viewed: 20 (6 ULg)Towards deterministic multipartite entanglement classes in circuit QED Bastin, Thierry ; ; et al Poster (2010) Detailed reference viewed: 15 (3 ULg)Sub-wavelength Imaging and Irradiation with Entangled Particles ; ; et al Patent (2009) Detailed reference viewed: 20 (1 ULg)Quantum Entanglement Antibunching and Saturation of Atoms in Dipole Blockade Gillet, Jérémie ; ; Bastin, Thierry Conference (2009) Detailed reference viewed: 9 (2 ULg)Ultrahigh resolution laser spectroscopy and isotope shifts for iron atoms Krins, Stéphanie ; ; Huet, Nicolas et al Conference (2009) Detailed reference viewed: 29 (6 ULg)Operational Entanglement Classification for Symmetric N-Qubit States Bastin, Thierry Conference (2009) Detailed reference viewed: 6 (3 ULg)Hyperfine Structure and Isotope Shifts in Iron Atoms Krins, Stéphanie ; ; Huet, Nicolas et al Conference (2009) Detailed reference viewed: 30 (4 ULg)Generation of total angular momentum eigenstates in remote qubits ; ; Bastin, Thierry et al in Physical Review. A (2009), 79 We propose a scheme enabling the universal coupling of angular momentum of N remote noninteracting qubits using linear optical tools only. Our system consists of N single-photon emitters in a ... [more ▼] We propose a scheme enabling the universal coupling of angular momentum of N remote noninteracting qubits using linear optical tools only. Our system consists of N single-photon emitters in a configuration that are entangled among their long-lived ground-state qubits through suitably designed measurements of the emitted photons. In this manner, we present an experimentally feasible algorithm that is able to generate any of the 2N symmetric and nonsymmetric total angular momentum eigenstates spanning the Hilbert space of the N-qubit compound. [less ▲] Detailed reference viewed: 42 (16 ULg)Sub-Rayleigh quantum imaging using single-photon sources ; Bastin, Thierry ; et al in Physical Review. A (2009), 80 We propose a technique capable of imaging a distinct physical object with sub-Rayleigh resolution in an ordinary far-field imaging setup using single-photon sources and linear optical tools only. We ... [more ▼] We propose a technique capable of imaging a distinct physical object with sub-Rayleigh resolution in an ordinary far-field imaging setup using single-photon sources and linear optical tools only. We exemplify our method for the case of a rectangular aperture and two or four single-photon emitters obtaining a resolution enhanced by a factor of 2 or 4, respectively. [less ▲] Detailed reference viewed: 22 (5 ULg)Heralded entanglement of arbitrary degree in remote qubits ; ; et al in Physical Review. A (2009), 80 Incoherent scattering of photons off two remote atoms with a -level structure is used as a basic Young-type interferometer to herald long-lived entanglement of an arbitrary degree. The degree of ... [more ▼] Incoherent scattering of photons off two remote atoms with a -level structure is used as a basic Young-type interferometer to herald long-lived entanglement of an arbitrary degree. The degree of entanglement, as measured by the concurrence, is found to be tunable by two easily accessible experimental parameters. Fixing one of them to certain values unveils an analog to the Malus’ law. An estimate of the variation in the degree of entanglement due to uncertainties in an experimental realization is given. [less ▲] Detailed reference viewed: 33 (5 ULg)Isotope shifts and hyperfine structure of the Fe I 372-nm resonance line Krins, Stéphanie ; ; Huet, Nicolas et al in Physical Review. A (2009), 80 We report measurements of the isotope shifts of the 3d64s2 a 5D4 − 3d64s4p z 5Fo 5 Fe I resonance line at 372 nm between all four stable isotopes 54Fe, 56Fe, 57Fe and 58Fe, as well as the complete ... [more ▼] We report measurements of the isotope shifts of the 3d64s2 a 5D4 − 3d64s4p z 5Fo 5 Fe I resonance line at 372 nm between all four stable isotopes 54Fe, 56Fe, 57Fe and 58Fe, as well as the complete hyperfine structure of that line for 57Fe, the only stable isotope having a non-zero nuclear spin. The field and specific mass shift coefficients of the transition have been derived from the data, as well as the experimental value for the hyperfine structure magnetic dipole coupling constant A of the excited state of the transition in 57Fe : A(3d64s4p z 5Fo 5 ) = 81.69(86) MHz. The measurements were carried out by means of high-resolution Doppler-free laser saturated absorption spectroscopy in a Fe-Ar hollow cathode discharge cell using both natural and enriched iron samples. The measured isotope shifts and hyperfine constants are reported with uncertainties at the percent level. [less ▲] Detailed reference viewed: 91 (38 ULg) |
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