Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Voliotis, Valia"'
Autor:
Bach, Anatole, Chapuis, Antoine, Morin, Corentin, Hostein, Richard, Germanis, Savvas, Eble, Benoit, Bernard, Mathieu, Margaillan, Florent, Atkinson, Paola, Voliotis, Valia, Braive, Remy, Moratis, Kimon
We demonstrate efficient in-plane optical fiber collection of single photon emission from quantum dots embedded in photonic crystal cavities. This was achieved via adiabatic coupling between a tapered optical fiber and a tapered on-chip photonic wave
Externí odkaz:
http://arxiv.org/abs/2410.09832
Publikováno v:
Phys. Rev. B 101, 161405(R) (2020)
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:
http://arxiv.org/abs/2004.00573
Publikováno v:
Semiconductor Science and Technology (2020)
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:
http://arxiv.org/abs/2001.09458
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 $\textbf{L}\cdot\textbf{S}$ form
Externí odkaz:
http://arxiv.org/abs/1905.07252
Autor:
Reigue, Antoine, Lemaître, Aristide, Carbonell, Carmen Gomez, Ulysse, Christian, Merghem, Kamel, Guilet, Stéphane, Hostein, Richard, Voliotis, Valia
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 a gate voltage, through
Externí odkaz:
http://arxiv.org/abs/1710.09732
Autor:
Reigue, Antoine, Iles-Smith, Jake, Lux, Fabian, Monniello, Léonard, Bernard, Mathieu, Margaillan, Florent, Lemaitre, Aristide, Martinez, Anthony, McCutcheon, Dara P S, Mørk, Jesper, Hostein, Richard, Voliotis, Valia
Publikováno v:
Phys. Rev. Lett. 118, 233602 (2017)
We investigate the temperature dependence of photon coherence properties through two photon interference (TPI) measurements from a single QD under resonant excitation. We show that the loss of indistinguishability is only related to the electron-phon
Externí odkaz:
http://arxiv.org/abs/1612.07121
Autor:
Monniello, Léonard, Reigue, Antoine, Hostein, Richard, Lemaitre, Aristide, Martinez, Anthony, Grousson, Roger, Voliotis, Valia
We report on two-photon interferences from highly indistinguishable single photons emitted by a quantum dot. Stricly resonant excitation with picosecond laser pulses allows coherent state preparation with a signifi- cantly increased coherence time (T
Externí odkaz:
http://arxiv.org/abs/1403.8001
Autor:
Monniello, Léonard, Tonin, Catherine, Hostein, Richard, Lemaitre, Aristide, Martinez, Anthony, Voliotis, Valia, Grousson, Roger
We report on coherent emission of the neutral exciton state in a single semiconductor self-assembled InAs/GaAs quantum dot embedded in a one-dimensional waveguide, under resonant picosecond pulsed excita- tion. Direct measurements of the radiative li
Externí odkaz:
http://arxiv.org/abs/1304.4756
Autor:
Kukliński, Krzysztof, Kłopotowski, Łukasz, Fronc, Krzysztof, Wiater, Maciej, Wojnar, Piotr, Rutkowski, Paweł, Voliotis, Valia, Grousson, Roger, Karczewski, Grzegorz, Kossut, Jacek, Wojtowicz, Tomasz
Publikováno v:
Appl. Phys. Lett 99, 141906 (2011)
We present photoluminescence studies of highly excited single self--assembled CdTe quantum dots under continuous--wave and pulsed excitations. We observe appearance of emission bands related to sequential filling of s--, p-- and d--shells. We analyze
Externí odkaz:
http://arxiv.org/abs/1108.0820
Autor:
Kłopotowski, Łukasz, Voliotis, Valia, Kudelski, Arkadiusz, Tartakovskii, Alexander I., Wojnar, Piotr, Fronc, Krzysztof, Grousson, Roger, Krebs, Oliver, Skolnick, Maurice S., Karczewski, Grzegorz, Wojtowicz, Tomasz
Publikováno v:
Phys. Rev. B 83, 155319 (2011)
We present studies on Coulomb interactions in single self-assembled CdTe quantum dots. We use a field effect structure to tune the charge state of the dot and investigate the impact of the charge state on carrier wave functions. The analysis of the q
Externí odkaz:
http://arxiv.org/abs/1101.0506