2003/04/30 by Mang Feng, M Feng, I D'Amico +5 · 2 citations
Computer Science · Physics and Astronomy · #Quantum and electron transport phenomena #Quantum-Dot Cellular Automata #Semiconductor Quantum Structures and Devices #quant-ph
paper · pdf · doi:10.1209/epl/i2003-10143-x
Europhysics Letters 66 (2004) 14
openalex publication_date 2004/04/01 · arxiv created 2004/04/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
A potential scheme is proposed for realizing a two-qubit quantum gate in semiconductor quantum dots. Information is encoded in the spin degrees of freedom of one excess conduction electron of each quantum dot. We propose to use two lasers, radiating two neighboring QDs, and tuned to blue detuning with respect to the resonant frequencies of individual excitons. The two-qubit phase gate can be achieved by means of both Pauli-blocking effect and dipole-dipole coupling between intermediate excitonic states.