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Proceedings Paper

Quantum gate operation of exciton qubits in semiconductor quantum dots
Author(s): Hidehiko Kamada; Hideki Gotoh; Hiroaki Ando; Toshihide Takagahara; Jiro Temmyo
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Paper Abstract

Potential application of elementary excitation in semiconductor quantum dot to quantum computation is discussed. Construction of scalable hardware and all optical implementation of logical gate that exploits discrete nature of electron-hole states and their well concentrated oscillator strenth for ultrafast gate operation are proposed. Rabi population oscillation of an excitonic two-level system in an isolated single InxGa1-xAs quantum dot is manifested by a quantum wave function interferometry in time domain, demonstrating a long lived coherence of zero-dimensional excitonic states and revealed the coherent population flopping under strong optical field. A phase-sensitive coherent gate operation on single-dot exciton qubit is demonstrated.

Paper Details

Date Published: 30 May 2003
PDF: 10 pages
Proc. SPIE 4992, Ultrafast Phenomena in Semiconductors VII, (30 May 2003); doi: 10.1117/12.475708
Show Author Affiliations
Hidehiko Kamada, NTT Corp. (Japan)
Hideki Gotoh, NTT Corp. (Japan)
Hiroaki Ando, Konan Univ. (Japan)
Toshihide Takagahara, Kyoto Institute of Technology (Japan)
Jiro Temmyo, Shizuoka Univ. (Japan)

Published in SPIE Proceedings Vol. 4992:
Ultrafast Phenomena in Semiconductors VII
Kong-Thon F. Tsen; Jin-Joo Song; Hongxing Jiang, Editor(s)

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