Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Valia Voliotis"'
Autor:
Richard Hostein, Valia Voliotis, Mathieu Bernard, S. Germanis, Paola Atkinson, Florent Margaillan, B. Eble, S. Majrab
Publikováno v:
Physical Review B. 104
We report measurements of the radiative lifetimes and coherence times of the dark and bright excitons in an asymmetric GaAs/AlGaAs quantum dot. The dots, fabricated by partial infilling of asymmetric in situ etched nanoholes, have low symmetry, which
Publikováno v:
Physical Review B: Condensed Matter (1978-1997)
Physical Review B: Condensed Matter (1978-1997), American Physical Society, 2020, 102, ⟨10.1103/PhysRevB.102.035406⟩
Physical Review B: Condensed Matter (1978-1997), American Physical Society, 2020, 102, ⟨10.1103/PhysRevB.102.035406⟩
We demonstrate here electrical control of the sign of the circularly polarized emission from the negatively charged trion, going from co- to contrapolarized with respect to the circular polarization of the laser, using a GaAs/AlAs quantum dot (QD) em
Publikováno v:
Semiconductor Science and Technology
Semiconductor Science and Technology, IOP Publishing, 2020, 35 (4), pp.045013. ⟨10.1088/1361-6641/ab73f2⟩
Semiconductor Science and Technology, IOP Publishing, 2020, 35 (4), pp.045013. ⟨10.1088/1361-6641/ab73f2⟩
We present five major reasons why semiconductor exciton, that is, a correlated electron-hole pair in a bulk, quantum well, or quantum wire, is conceptually different from a pair in a quantum dot: (1) the origin of pair binding, (2) the interaction wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e1c8c7234308bb28cb207eb565233a6
https://hal.archives-ouvertes.fr/hal-02650704/file/2001.09458.pdf
https://hal.archives-ouvertes.fr/hal-02650704/file/2001.09458.pdf
Publikováno v:
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2020, 101 (16), ⟨10.1103/PhysRevB.101.161405⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2020, 101 (16), ⟨10.1103/PhysRevB.101.161405⟩
Photon absorption in a semiconductor produces bright excitons that recombine very fast into photons. We here show that in a quantum dot set close to a p-doped reservoir, this absorption can produce a dark duo, i.e., an electron-hole pair that does no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::625576eb73f741c6e1d00bbb71ca9172
Publikováno v:
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2019, 99 (24), pp.245202. ⟨10.1103/PhysRevB.99.245202⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2019, 99 (24), pp.245202. ⟨10.1103/PhysRevB.99.245202⟩
We reconsider a key point in semiconductor physics, the splitting of the valence band states induced by the spin-orbit interaction, through a novel approach which uses neither the group theory formalism, nor the usual $\mathbf{L}\ifmmode\cdot\else\te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::524424c648c95b377f4cc9ffc677e35d
https://hal.sorbonne-universite.fr/hal-02351681
https://hal.sorbonne-universite.fr/hal-02351681
Publikováno v:
Semiconductor Science and Technology
Semiconductor Science and Technology, IOP Publishing, 2019, 34 (11), pp.113001. ⟨10.1088/1361-6641/ab4362⟩
Semiconductor Science and Technology, IOP Publishing, 2019, 34 (11), pp.113001. ⟨10.1088/1361-6641/ab4362⟩
International audience; Semiconductor quantum dots are very efficient sources of single and highly indistinguishable photons. These properties rely on the possibility to coherently control the system at the single spin level. At this ultimate level o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c77fc587d02310dbe2b4e4465d3ab85
https://hal.sorbonne-universite.fr/hal-02404993/document
https://hal.sorbonne-universite.fr/hal-02404993/document
Autor:
S. Germanis, Catherine Gourdon, Paola Atkinson, Aristide Lemaître, B. Eble, S. Majrab, Valia Voliotis, Mathieu Bernard, Florent Margaillan, Richard Hostein
Publikováno v:
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2018, 98 (15), ⟨10.1103/PhysRevB.98.155303⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2018, 98 (15), ⟨10.1103/PhysRevB.98.155303⟩
International audience; Symmetry breaking of the confinement in In(Ga)As quantum dots leads to mixing between the bright and dark exciton states and an increase in the oscillator strength of the dark exciton. We demonstrate here that the change in de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::164fb46641621dabe7796df1bc8f274c
https://hal.archives-ouvertes.fr/hal-01902613
https://hal.archives-ouvertes.fr/hal-01902613
Autor:
Antoine Reigue, Christian Ulysse, Kamel Merghem, Carmen Gomez Carbonell, Stéphane Guilet, Richard Hostein, Aristide Lemaître, Valia Voliotis
Publikováno v:
Applied Physics Letters
Applied Physics Letters, American Institute of Physics, 2018, 112 (7), pp.073103
Applied Physics Letters, American Institute of Physics, 2018, 112 (7), pp.073103
International audience; We demonstrate systematic resonance fluorescence recovery with near-unity emission efficiency in single quantum dots embedded in a charge-tunable device in a wave-guiding geometry. The quantum dot charge state is controlled by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e46f3abc31cabf63e91e370ec56cf62e
https://hal.archives-ouvertes.fr/hal-02019797
https://hal.archives-ouvertes.fr/hal-02019797
Autor:
Anthony Martinez, Jake Iles-Smith, Florent Margaillan, Jesper Mørk, Aristide Lemaître, Léonard Monniello, Mathieu Bernard, Dara P. S. McCutcheon, Antoine Reigue, Valia Voliotis, Richard Hostein, Fabian R. Lux
Publikováno v:
Reigue, A, Iles-Smith, J, Lux, F, Monniello, L, Bernard, M, Margaillan, F, Lemaitre, A, Martinez, A, McCutcheon, D P S, Mørk, J, Hostein, R & Voliotis, V 2017, ' Probing Electron-Phonon Interaction through Two-Photon Interference in Resonantly Driven Semiconductor Quantum Dots ', Physical Review Letters, vol. 118, no. 23, 233602 . https://doi.org/10.1103/PhysRevLett.118.233602
Physical Review Letters
Physical Review Letters, American Physical Society, 2017, 118 (23), pp.233602 ⟨10.1103/PhysRevLett.118.233602⟩
Physical Review Letters, 2017, 118 (23), pp.233602 ⟨10.1103/PhysRevLett.118.233602⟩
Reigue, A, Iles-Smith, J, Lux, F, Monniello, L, Bernard, M, Margaillan, F, Lemaitre, A, Martinez, A, McCutcheon, D, Mørk, J, Hostein, R & Voliotis, V 2017, ' Probing electron-phonon interaction through two-photon interference in resonantly driven semiconductor quantum dots ', Physical Review Letters, vol. 118, 233602 . https://doi.org/10.1103/PhysRevLett.118.233602
Reigue, A, Iles-Smith, J, Lux, F, Monniello, L, Bernard, M, Margaillan, F, Lemaitre, A, Martinez, A, McCutcheon, D P S, Mørk, J, Hostein, R & Voliotis, V 2017, ' Probing Electron-Phonon Interaction through Two-Photon Interference in Resonantly Driven Semiconductor Quantum Dots ', Physical Review Letters . https://doi.org/10.1103/PhysRevLett.118.233602
Physical Review Letters
Physical Review Letters, American Physical Society, 2017, 118 (23), pp.233602 ⟨10.1103/PhysRevLett.118.233602⟩
Physical Review Letters, 2017, 118 (23), pp.233602 ⟨10.1103/PhysRevLett.118.233602⟩
Reigue, A, Iles-Smith, J, Lux, F, Monniello, L, Bernard, M, Margaillan, F, Lemaitre, A, Martinez, A, McCutcheon, D, Mørk, J, Hostein, R & Voliotis, V 2017, ' Probing electron-phonon interaction through two-photon interference in resonantly driven semiconductor quantum dots ', Physical Review Letters, vol. 118, 233602 . https://doi.org/10.1103/PhysRevLett.118.233602
Reigue, A, Iles-Smith, J, Lux, F, Monniello, L, Bernard, M, Margaillan, F, Lemaitre, A, Martinez, A, McCutcheon, D P S, Mørk, J, Hostein, R & Voliotis, V 2017, ' Probing Electron-Phonon Interaction through Two-Photon Interference in Resonantly Driven Semiconductor Quantum Dots ', Physical Review Letters . https://doi.org/10.1103/PhysRevLett.118.233602
We investigate the temperature dependence of photon coherence properties through two-photon interference (TPI) measurements from a single quantum dot (QD) under resonant excitation. We show that the loss of indistinguishability is related only to the
Autor:
Michel Schott, Thierry Barisien, Roger Grousson, Laurent Legrand, A. Enderlin, Antoine Al Choueiry, Jeremy Holcman, Romain Melet, Valia Voliotis
Publikováno v:
physica status solidi (b). 245:2702-2707
The exciton in single luminescent polydiacetylene (PDA) chains dispersed in their single crystal monomer matrix is studied. As reported these quantum wires have the properties of a perfect quasi-1D semiconducting system. The macroscopic spatial coher