Quantum gate operation of exciton qubits in semiconductor quantum dots

Hidehiko Kamada; Hideki Gotoh; Hiroaki Ando; Toshihide Takagahara; Jiro Temmyo

doi:10.1117/12.475708

30 May 2003 Quantum gate operation of exciton qubits in semiconductor quantum dots

Hidehiko Kamada, Hideki Gotoh, Hiroaki Ando, Toshihide Takagahara, Jiro Temmyo

Proceedings Volume 4992, Ultrafast Phenomena in Semiconductors VII; (2003) https://doi.org/10.1117/12.475708
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

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.

Citation Download Citation

Hidehiko Kamada, Hideki Gotoh, Hiroaki Ando, Toshihide Takagahara, and Jiro Temmyo "Quantum gate operation of exciton qubits in semiconductor quantum dots", Proc. SPIE 4992, Ultrafast Phenomena in Semiconductors VII, (30 May 2003); https://doi.org/10.1117/12.475708

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