Zobrazeno 1 - 10 of 95 pro vyhledávání: '"Lucien Besombes"'
1
Polariton quantization modes and whispering gallery modes in a cylindrical microcavity
Autor: Lucien Besombes, Pavlos G. Savvidis, V. P. Kochereshko, L. V. Kotova
Publikováno v: Journal of Luminescence
Journal of Luminescence, Elsevier, 2021, 238, pp.118220. ⟨10.1016/j.jlumin.2021.118220⟩
Polariton photoluminescence from cylindrical microcavities was studied under optical excitation below and above a nonlinear regime threshold. Lines of lateral excitonic polaritons quantization were observed in the spectra. In addition to quantization
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::195234802faf6a396188b652dd3ec1ce
https://hal.archives-ouvertes.fr/hal-03280439
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2
Hole- Cr+ nanomagnet in a semiconductor quantum dot
Autor: M. Arino, Lucien Besombes, H. Boukari, Shinji Kuroda, V. Tiwari, Pascal Pochet, S. Gupta, Damien Caliste, M. Morita, T. Inoue
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2021, 104 (4), pp.L041301. ⟨10.1103/PhysRevB.104.L041301⟩
Physical Review B, 2021, 104 (4), pp.L041301. ⟨10.1103/PhysRevB.104.L041301⟩
We study a new diluted magnetic semiconductor system based on the spin of the ionized acceptor Cr$^+$. We show that the negatively charged Cr$^+$ ion, an excited state of the Cr in II-VI semiconductor, can be stable when inserted in a CdTe quantum do
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c184192f877fe7b0d3de7e445d9d377d
https://doi.org/10.1103/physrevb.104.l041301
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3
Radio-frequency stress-induced modulation of CdTe/ZnTe quantum dots
Autor: Lucien Besombes, Edith Bellet-Amalric, V. Tiwari, M. Arino, T. Crozes, Shinji Kuroda, Hervé Boukari, M. Morita, K. Makita
Publikováno v: Journal of Applied Physics
Journal of Applied Physics, American Institute of Physics, 2020, 127 (23), pp.234303. ⟨10.1063/5.0011124⟩
Journal of Applied Physics, 2020, 127 (23), pp.234303. ⟨10.1063/5.0011124⟩
International audience; We demonstrate radio-frequency tuning of the energy of individual CdTe/ZnTe quantum dots (QDs) by Surface Acoustic Waves (SAWs). Despite the very weak piezoelectric coefficient of ZnTe, SAW in the GHz range can be launched on
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2e9a4a61bc3bab0351c59a116ed7e62
https://hal.archives-ouvertes.fr/hal-02874811/file/JAP20-AR-02288.pdf
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4
Influence of non-equilibrium phonons on the spin dynamics of a single Cr atom
Autor: M. Arino, Lucien Besombes, V. Tiwari, H. Boukari, M. Morita, K. Makita, Shinji Kuroda
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2020, 101 (3), pp.035305. ⟨10.1103/PhysRevB.101.035305⟩
International audience; We analyse the influence of optically generated non-equilibrium phonons on the spin relaxation and effective spin temperature of an individual Cr atom inserted in a quantum dot. Using a three pulses pump-probe technique, we sh
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d335b675b7e9486766f655161cefec1
http://arxiv.org/abs/1911.07639
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5
Polariton Bose condensation in microcavity in high magnetic fields
Autor: S. I. Tsintzos, N. G. Filosofov, Pavlos G. Savvidis, Lucien Besombes, H. Mariette, V. P. Kochereshko, Z. Hatzopoulos, A. V. Platonov
Publikováno v: Journal of Physics: Conference Series
International Conference on Physic
Journal of Physics: Conference Series, IOP Publishing, 2019, 1400 (6), pp.066007. ⟨10.1088/1742-6596/1400/6/066007⟩
The dependences of the exciton-polariton photoluminescence spectra on the intensity of optical excitation and external magnetic fields are investigated in cylindrical mesas based on high-quality microcavities. It was found that with an increase of th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da89adfa2739c71c71ed310a701c8729
https://hal.archives-ouvertes.fr/hal-03196333
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6
Charge fluctuations of a Cr atom probed in the optical spectra of a quantum dot
Autor: Shinji Kuroda, H. Boukari, V. Tiwari, Lucien Besombes, M. Sunaga, K. Makita, A. Lafuente-Sampietro
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2019, 99 (3), pp.035309. ⟨10.1103/PhysRevB.99.035309⟩
International audience; We study the emission of individual quantum dots in CdTe/ZnTe samples doped with a low concentration of Cr. In addition to dots with a photoluminescence (PL) split by the exchange interaction with a magnetic Cr atom, we observ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01cdac70e322a789b21259fe906b8b4a
https://doi.org/10.1103/physrevb.99.035309
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7
Optical control of an individual Cr spin in a semiconductor quantum dot
Autor: Shinji Kuroda, Lucien Besombes, V. Tiwari, Hervé Boukari, A. Lafuente-Sampietro, K. Makita
Publikováno v: Semiconductor Science and Technology
Semiconductor Science and Technology, IOP Publishing, 2019, 34 (6), pp.063001. ⟨10.1088/1361-6641/ab13f5⟩
We demonstrate that the spin of a Cr atom in a quantum dot (QD) can be controlled optically and we discuss the main properties of this single spin system. The photoluminescence of individual Cr-doped QDs and their evolution in magnetic field reveal a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e32f1761136ca142e14524ab7185c30
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8
On the condensation of exciton polaritons in microcavities induced by a magnetic field
Autor: V. P. Kochereshko, Pavlos G. Savvidis, H. Mariette, Lucien Besombes, Zacharias Hatzopoulos, S. I. Tsintzos, Darya Avdoshina, Alexey Kavokin
Publikováno v: Fizika i tekhnika poluprovodnicov / Semiconductors
Fizika i tekhnika poluprovodnicov / Semiconductors, MAIK Nauka/Interperiodica, 2016, 50 (11), pp.1506-1510. ⟨10.1134/S1063782616110142⟩
The photoluminescence spectra of exciton polaritons in microcavities under conditions of three-dimensional quantization are studied as a factor of the density of the optical excitation and magnetic field. The behavior of the degree of circular polari
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5939df05d71a05d2a750f2743a61408
https://doi.org/10.1134/s1063782616110142
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9
Dynamics of a Cr spin in a semiconductor quantum dot: Hole-Cr flip-flops and spin-phonon coupling
Autor: K. Makita, Shinji Kuroda, H. Utsumi, Lucien Besombes, A. Lafuente-Sampietro, M. Sunaga, H. Boukari
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2018, 97 (15), pp.155301. ⟨10.1103/PhysRevB.97.155301⟩
A detailed analysis of the photoluminescence (PL) intensity distribution in singly Cr-doped CdTe/ZnTe quantum dots (QDs) is performed. First of all, we demonstrate that hole-Cr flip-flops induced by an interplay of the hole-Cr exchange interaction an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f2d2fc3fd55833c2802ff9f0225fc35
https://hal.archives-ouvertes.fr/hal-01757172
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10
Resonant photoluminescence and dynamics of a hybrid Mn hole spin in a positively charged magnetic quantum dot
Autor: A. Lafuente-Sampietro, H. Boukari, Lucien Besombes
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2017, 95 (24), pp.245308. ⟨10.1103/PhysRevB.95.245308⟩
Physical Review B: Condensed Matter and Materials Physics
Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2017, 95 (24), pp.245308. ⟨10.1103/PhysRevB.95.245308⟩
Physical Review B, American Physical Society, 2017, 95 (24), ⟨10.1103/PhysRevB.95.245308⟩
International audience; We analyze, through resonant photoluminescence, the spin dynamics of an individual magnetic atom (Mn) coupled to a hole in a semiconductor quantum dot. The hybrid Mn hole spin and the positively charged exciton in a CdTe/ZnTe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fee05081bbfe6b50d3300b8bf04d1e85
https://doi.org/10.1103/physrevb.95.245308
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