Control of Exciton Dynamics in Nanodots for Quantum Operations

2001/02/27 by Pochung Chen, C. Piermarocchi, Carlo Piermarocchi +1 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #cond-mat.mtrl-sci #quant-ph

paper · pdf · doi:10.1103/physrevlett.87.067401

5 pages, 4 figures

arxiv created 2001/02/27 · openalex publication_date 2001/07/18 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a theory to further a new perspective of proactive control of exciton dynamics in the quantum limit. Circularly polarized optical pulses in a semiconductor nanodot are used to control the dynamics of two interacting excitons of opposite polarizations. Shaping of femtosecond laser pulses keeps the quantum operation within the decoherence time. Computation of the fidelity of the operations and application to the complete solution of a minimal quantum computing algorithm demonstrate in theory the feasibility of quantum control.

Citations

• Implementation of a quantum algorithm on a nuclear magnetic resonance quantum computer
• Experimental realization of a quantum algorithm
• Complete Characterization of a Quantum Process: The Two-Bit Quantum Gate
• Two-Bit Gates are Universal for Quantum Computation
• Monte Carlo wave-function method in quantum optics

Cited by

• Optical generation and quantitative characterizations of electron-hole entanglement
• Entanglement and errors in the control of spins by optical coupling
• Antiresonance and interaction-induced localization in spin and qubit chains with defects