查詢結果分析
來源資料
頁籤選單縮合
題名 | Optimal Quantum Detection of Symmetric States=對稱量子態的最佳化偵測 |
---|---|
作 者 | 周志隆; 徐立義; | 書刊名 | 中原學報 |
卷期 | 31:3 2003.09[民92.09] |
頁次 | 頁161-168 |
分類號 | 331.3 |
關鍵詞 | 量子偵測; 對稱量子態; Quantum detection; Symmetric quantum states; |
語文 | 英文(English) |
中文摘要 | 我們考慮平面上三個相等問隔、且非正交的量子 位元。任意從此三個量子位元裡選取一個,作為單一 量子位元訊號。其餘的兩個量子位元,則作為雙量子 位元訊號。我們發現此雙量子位元訊號的最佳化的機 率算子量測,可以解釋成在四維的Hilbert空間裡最佳 化的正交量測。此外我們也發現,雙量子位元訊號比 之於單量子位元訊號,要有較佳的偵測機率。最後, 我們也討論了平面上N個相等問隔、且非正交的量子 位元,其衍生出來的訊號的偵測情形。 |
英文摘要 | Three qually separated nonorthogonal quantum bits that lieon the same plane are pre pared for signal processing. One of the qubits is randomly picked as the single-qubit signal. The remaining two qubits then form the two-qubit signal. We find that the optimal probability operator measure for the two-qubit signals can be interpreted as the optimal orthogonal mea surement in the four-dimensional Hilbert space of the signal states. We also find that the two qubit signals have a better detection probability than the single-qubit. Possible generalization to the case of N nonorthogonal qubits is also discussed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。