Quantum computation with coupled quantum dots embedded in optical microcavities
Data(s) |
2002
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Resumo |
Based on an idea that spatial separation of charge states can enhance quantum coherence, we propose a scheme for a quantum computation with the quantum bit (qubit) constructed from two coupled quantum dots. Quantum information is stored in the electron-hole pair state with the electron and hole located in different dots, which enables the qubit state to be very long-lived. Universal quantum gates involving any pair of qubits are realized by coupling the quantum dots through the cavity photon which is a hopeful candidate for the transfer of long-range information. The operation analysis is carried out by estimating the gate time versus the decoherence time. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Li XQ; Yan YJ .Quantum computation with coupled quantum dots embedded in optical microcavities ,PHYSICAL REVIEW B,2002,65 (20):Art.No.205301 |
Palavras-Chave | #半导体物理 #TRAPPED IONS #LOGIC GATES #ENTANGLEMENT #EXCITONS #STATES #COMPUTER #SYSTEMS #PHONONS #QUBIT #PHASE |
Tipo |
期刊论文 |