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pro vyhledávání: '"Kumano, H."'
Publikováno v:
J. Appl. Phys. 116, 043103 (2014)
We have recently reported the successful fabrication of bright single-photon sources based on Ag-embedded nanocone structures that incorporate InAs quantum dots. The source had a photon collection efficiency as high as 24.6%. Here we show the results
Externí odkaz:
http://arxiv.org/abs/1407.3541
Publikováno v:
Phys. Rev. B 91, 205437 (2015)
We demonstrate Werner-like polarization-entangled state generation disapproving local hidden variable theory from a single semiconductor quantum dot. By exploiting tomographic analysis with temporal gating, we find biphoton states are mapped on the W
Externí odkaz:
http://arxiv.org/abs/1406.6843
Autor:
Liu, X., Ha, N., Nakajima, H., Mano, T., Kuroda, T., Urbaszek, B., Kumano, H., Suemune, I., Sakuma, Y., Sakoda, K.
Publikováno v:
Phys. Rev. B 90, 081301(R) (2014)
The emission cascade of a single quantum dot is a promising source of entangled photons. A prerequisite for this source is the use of a symmetric dot analogous to an atom in a vacuum, but the simultaneous achievement of structural symmetry and emissi
Externí odkaz:
http://arxiv.org/abs/1406.4576
Autor:
Kuroda, T., Mano, T., Ha, N., Nakajima, H., Kumano, H., Urbaszek, B., Jo, M., Abbarachi, M., Sakuma, Y., Sakoda, K., Suemune, I., Marie, X., Amand, T.
Publikováno v:
Phys.Rev.B 88, 041306(R) (2013)
An ideal source of entangled photon pairs combines the perfect symmetry of an atom with the convenient electrical trigger of light sources based on semiconductor quantum dots. We create a naturally symmetric quantum dot cascade that emits highly enta
Externí odkaz:
http://arxiv.org/abs/1302.6389
Publikováno v:
Applied Physics Express 6 (2013) 065203
Fiber-based bidirectional photon extraction from nanoscale emitters and photon antibunching behavior between two outputs of two single mode optical fibers are experimentally demonstrated. Flakes of the epitaxial layer containing the InAs quantum dots
Externí odkaz:
http://arxiv.org/abs/1210.3123
Autor:
Sasakura, H., Hermannstädter, C., Dorenbos, S. N., Akopian, N., van Kouwen, M. P., Motohisa, J., Kobayashi, Y., Kumano, H., Kondo, K., Tomioka, K., Fukui, T., Suemune, I., Zwiller, V.
Publikováno v:
Physical Review B 85, 075324/1-7 (2012)
We have investigated the optical properties of a single InAsP quantum dot embedded in a standing InP nanowire. A regular array of nanowires was fabricated by epitaxial growth and electron-beam patterning. The elongation of transverse exciton spin rel
Externí odkaz:
http://arxiv.org/abs/1109.6419
Interference of a single photon generated from a single quantum dot is observed between two photon polarization modes. Each emitted single photon has two orthogonal polarization modes associated with the solid-state single photon source, in which two
Externí odkaz:
http://arxiv.org/abs/0908.1829
Autor:
Kumano, H., Kobayashi, H., Ekuni, S., Hayashi, Y., Jo, M., Sasakura, H., Adachi, S., Muto, S., Suemune, I.
High degree of preservation of spin states during energy relaxation processes mediated by optical phonons is demonstrated in a single quantum dot. Optical-phonon resonance and relevant suppression of spin relaxation are clearly identified as dip stru
Externí odkaz:
http://arxiv.org/abs/0803.1037
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