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See detailQuantum gates in hyperfine levels of ultracold alkali dimers by revisiting constrained-phase optimal control design
Jaouadi, Amine; Barrez, Etienne; Justum, Yves et al

in Journal of Chemical Physics (2013), 139

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See detailQuantum imaging using single photon sources
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Poster (2009)

Detailed reference viewed: 4 (0 ULg)
See detailQuantum imaging using single photon sources
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2008)

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See detailQuantum Imaging with Incoherent Photons
Thiel, C.; Bastin, Thierry ULg; Martin, John ULg et al

in Physical Review Letters (2007), 99

We propose a technique to obtain subwavelength resolution in quantum imaging with potentially 100% contrast using incoherent light. Our method requires neither path-entangled number states nor multiphoton ... [more ▼]

We propose a technique to obtain subwavelength resolution in quantum imaging with potentially 100% contrast using incoherent light. Our method requires neither path-entangled number states nor multiphoton absorption. The scheme makes use of N photons spontaneously emitted by N atoms and registered by N detectors. It is shown that for coincident detection at particular detector positions a resolution of lambda/N can be achieved. [less ▲]

Detailed reference viewed: 28 (5 ULg)
See detailQuantum imaging with incoherent photons
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2007)

Detailed reference viewed: 8 (6 ULg)
See detailQuantum imaging with incoherent photons
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2007)

Detailed reference viewed: 4 (3 ULg)
See detailQuantum imaging with incoherent photons
Thiel, C.; Solano, E.; Bastin, Thierry ULg et al

Conference (2007)

Detailed reference viewed: 7 (4 ULg)
See detailQuantum imaging with single photon sources
Thiel, C.; Bastin, Thierry ULg; von Zanthier, J. et al

Conference (2008)

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See detailQuantum imaging with trapped ions
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2008)

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See detailQuantum imaging with uncorrelated single photon sources
Bastin, Thierry ULg

in Proceedings of SPIE (2008)

We propose a technique to obtain sub-wavelength resolution using photons from uncorrelated single photon sources. The method employs N photons of wavelength λ spontaneously emitted from N atoms and ... [more ▼]

We propose a technique to obtain sub-wavelength resolution using photons from uncorrelated single photon sources. The method employs N photons of wavelength λ spontaneously emitted from N atoms and subsequently detected by N detectors. We demonstrate that for certain detector positions the N-th order correlation function as a function of the first detector position is a pure sinusoidal oscillation with a fringe spacing of λ/N and a contrast of 100%. The result corresponds to an N-fold increase in resolution compared to classical microscopy. Our technique is also capable of imaging a distinct physical object with sub-Rayleigh resolution. [less ▲]

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See detailQuantum imaging with uncorrelated single photon sources
Bastin, Thierry ULg; Thiel, C.; Solano, E. et al

Conference (2008)

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See detailQuantum mechanical statistical theories for chemical reactivity. Overlapping resonances
Desouter, Michèle ULg; Chapuisat, Xavier

in Physical Chemistry Chemical Physics [=PCCP] (1999), 1

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See detailQuantum reversibility and echoes in interacting systems
Petitjean, Cyril ULg; Jacquod, Ph

in PHYSICAL REVIEW LETTERS (2006), 97(12), 124103-4

In echo experiments, imperfect time-reversal operations are performed on a subset of the total number of degrees of freedom. To capture the physics of these experiments, we introduce a partial fidelity M ... [more ▼]

In echo experiments, imperfect time-reversal operations are performed on a subset of the total number of degrees of freedom. To capture the physics of these experiments, we introduce a partial fidelity M(B)(t), the Boltzmann echo, where only part of the system's degrees of freedom can be time reversed. We present a semiclassical calculation of M(B)(t). We show that, as the time-reversal operation is performed more and more accurately, the decay rate of M(B)(t) saturates at a value given by the decoherence rate of the controlled degrees of freedom due to their coupling to uncontrolled ones. We connect these results with NMR spin echo experiments. [less ▲]

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See detailQuantum Spin Transport in Carbon Chains
Zanolli, Zeila ULg; Onida, Giovanni; Charlier, Jean-Christophe

in ACS Nano (2010), 4(9), 5174-5180

First-principles and non-equilibrium Green’s function approaches are used to predict spin-polarized electronic transport in monatomic carbon chains covalently connected to graphene nanoribbons, as ... [more ▼]

First-principles and non-equilibrium Green’s function approaches are used to predict spin-polarized electronic transport in monatomic carbon chains covalently connected to graphene nanoribbons, as recently synthetized experimentally (Jin, C.; et al. Phys. Rev. Lett. 2009, 102, 205501−205504). Quantum electron conductances exhibit narrow resonant states resulting from the simultaneous presence of open conductance channels in the contact region and on the chain atoms. Odd-numbered chains, which acquire metallic or semiconducting character depending on the nature of the edge at the graphene contact, always display a net spin polarization. The combination of electrical and magnetic properties of chains and contacts results in nanodevices with intriguing spintronic properties such as the coexistence of magnetic and semiconducting behaviors. [less ▲]

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See detailQuantum State Construction of Matter Qubits via Projective Measurements
von Zanthier, J.; Maser, A.; Schilling, U. et al

Conference (2009)

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See detailQuantum theory of the cold-atom micromaser including gravity
Bastin, Thierry ULg; Martin, John ULg

in Physical Review. A (2005), 72

The quantum theory of the cold-atom micromaser including the effects of gravity is considered. We show that gravity does not break the special properties of the induced emission probability for the ... [more ▼]

The quantum theory of the cold-atom micromaser including the effects of gravity is considered. We show that gravity does not break the special properties of the induced emission probability for the micromaser in the cold atom regime and rather new effects are predicted. In particular, we show that the cavity acts in the gravity field as an additional repulsive and attractive potential, resulting in quasibound states of the atomic motion. This feature gives rise to fine resonances in the induced emission probability that are not restricted to any particular cavity mode function, in contrast to the usual cold-atom micromaser. It is also shown that the atom is able to emit a photon inside the cavity, though classically it does not reach the interaction region. Predictions about the photon number statistics when the cavity is pumped by a flux of excited atoms are finally given. Unusual highly nonclassical "dragon" distributions are still predicted in the vertical geometry. (c) 2005 American Institute of Physics. [less ▲]

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See detailQuantum-confinement effects in InAs-InP core-shell nanowires
Zanolli, Zeila ULg; Pistol, Mats-Eric; Froberg, Linus E et al

in Journal of Physics : Condensed Matter (2007), 19(29),

We report the detection of quantum confinement in single InAs–InP core–shell nanowires. The wires, having an InAs core with ~25 nm diameter, are characterized by emission spectra in which two peaks are ... [more ▼]

We report the detection of quantum confinement in single InAs–InP core–shell nanowires. The wires, having an InAs core with ~25 nm diameter, are characterized by emission spectra in which two peaks are identified under high excitation intensity conditions. The peaks are caused by emission from the ground and excited quantized levels, due to quantum confinement in the plane perpendicular to the nanowire axis. We have identified different energy contributions in the emission spectra, related to the wurtzite structure of the wires, the strain between the wurtzite core and the shell, and the confinement energy of the InAs core. Calculations based on six-band strain-dependent theory allow the theoretical estimation of the confined energy states in such materials, and we found these results to be in good agreement with those from the photoluminescence studies. [less ▲]

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See detailQuarante ans d'exécution de remembrements ruraux en Région wallonne.
Schmitz, Serge ULg; Christians, Charles ULg

in Acta Geographica Lovaniensia (1998), 37

For forty years, a third of the farming area has been regrouped in Wallonia. The paper draws the development of land consolidation and underlines the increase of non agricultural aims, especially ... [more ▼]

For forty years, a third of the farming area has been regrouped in Wallonia. The paper draws the development of land consolidation and underlines the increase of non agricultural aims, especially environment concerns. So land consolidations with stark productivity concerns in the sixties changed to a new way of land consolidation respectful of the inherited balances and concerned with the functional diversification of the rural areas. However the distribution of land consolidation projects still shows stark productivity concerns : land consolidation projects remain first in ploughed land areas with large farming. [less ▲]

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See detailQuarante ans de céréaliculture en Belgique : évolution des superficies, des rendements et du nombre d'exploitations
Burny, Philippe ULg

in CRA-w; FUSAGx (Eds.) 40 ans Livre blanc Céréales-Gembloux : Economie de la production céréalière en Belgique : Evolution en 40 ans de Politique Agricole Commune et perspectives d’avenir (2007)

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See detailQuarante ans de céréaliculture en Belgique : évolution des superficies, des rendements et du nombre d’exploitations
Burny, Philippe ULg

in Faculté universitaire des Sciences agronomiques de Gembloux; Centre wallon de Recherches agronomiques (Eds.) 40 ans Livre blanc Céréales-Gembloux "Economie de la production céréalière en Belgique : évolution en 40 ans de Politique Agricole Commune et perspectives d’avenir" (2007)

Detailed reference viewed: 29 (6 ULg)