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  • 學位論文

藉由Krotov法對雙井光學晶格內量子糾結態之置備的最佳化控制

Optimal Control on the Transport for Preparation of Entanglement in the Optical Lattice of Double Well by Krotov's Method

指導教授 : 朱時宜

摘要


在量子計算這個領域中,光學晶格因為擁有較長的去同調時間與較多的操作技術而成為一個可能實現量子電腦且前景看好的系物理系統。然而對於此系統而言,產生好的量子糾結態仍為一不易之事,因此,在此碩士論文中,我們模擬其中一種被稱為雙井的光學晶格,並以最佳化控制理論中的Krotov法來找出雙井內將兩個量子位元轉化為雙體量子糾結態的最佳控制過程。未來我們或許可利用此雙量子位元的糾結態來製造出量子電腦的基本邏輯閘,以期實現量子電腦與量子計算。

並列摘要


Optical lattice is one of the promising candidates for realizing quantum computation due to the long decoherence time and manipulation techniques available. However, the generation of entanglement between qubits is still a challenging problem in optical lattice. In this thesis we perform the numerical simulation on an optical lattice of double well, and optimize the transportation for the preparation of entanglement between two qubits by Krotov's method. In the future we may use this entangled state to create the fundamental quantum logic gate.

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