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@@ -0,0 +1,44 @@ |
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from numpy import * |
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px = matrix([[0, 1], [1, 0]], dtype=complex) |
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py = matrix([[0, -1j], [1j, 0]], dtype=complex) |
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pz = matrix([[1, 0], [0, -1]], dtype=complex) |
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i = matrix(eye(2, dtype=complex)) |
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h = matrix([[1, 1], [1, -1]], dtype=complex) / sqrt(2) |
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p = matrix([[1, 0], [0, 1j]], dtype=complex) |
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s_set = [i, p, p*p, p*p*p] |
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c_set = [i, h, h*p, h*p*p, h*p*p*p, h*p*p*h] |
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def identify_pauli(m): |
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for sign in [+1, -1]: |
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for label, pauli in zip("XYZ", (px, py, pz)): |
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if allclose(sign*pauli, m): |
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return "{}{}".format("+" if sign>0 else "-", label) |
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for p in px, py, pz: |
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for sign in [+1, -1]: |
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print identify_pauli(sign*p) |
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print py |
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print h*px*h.H |
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print h*py*h.H |
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print h*pz*h.H |
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#names = [] |
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#matrices = [] |
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#for s, s_name in zip(s_set, s_names): |
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#for c, c_name in zip(c_set, c_names): |
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#names.append(s_name+c_name) |
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#matrices.append(s*c) |
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#print " ".join(names) |
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#print len(names) |
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#for m in matrices: |
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# print (m/abs(amax(m))).round(0).reshape(4) |
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#print average(abs(array((m/abs(amax(m))).round(0).reshape(4).tolist()[0]))) |
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