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Notation1 We use the convention that \(\Omega(x)\) means a function that is asymptotically \(\geq c_{1} x\) for a constant \(c_{1}>0, O(x)\) means \(\ 阅读全文
posted @ 2022-04-22 22:04
narip
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Theorem Any n qubtis state can be represented by combination of product of pauli matrix of 2 qubtis, that is \(\{I,X,Y,Z\}^{\otimes n}\). Further, any 阅读全文
posted @ 2022-04-22 22:03
narip
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In Nielsen and Chuang's QCQI, there are three kinds of measurement: general measurement, projective measurement, positive operator valued measurement( 阅读全文
posted @ 2022-04-22 22:02
narip
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Quasi Probability method clear all; clc; theta = pi/4; p = 0.3; % initial state psi = 1/sqrt(2)*[1;exp(1j*theta)]; rho = psi*psi'; sx = [0 1;1 0]; sy 阅读全文
posted @ 2022-04-22 22:02
narip
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