for_inrange(2**(m-1)):qc_S.cp(pi/2,0,1)qc_S.draw('mpl') 在x基础的辅助量子比特的测量 最后,我们在x-basis中执行辅助量子比特的测量。我们定义一个函数执行x测量,然后应用它。 defx_measurement(qc,qubit,cbit):"""Measure 'qubit' in the X-basis, and store the result in 'cbit'"""qc...
# Create theX-measurementfunction:defx_measurement(qc,qubit,cbit):"""Measure 'qubit' in the X-basis, and store the result in 'cbit'"""qc.h(qubit)qc.measure(qubit,cbit)returnqc initial_state=[1/sqrt(2),-1/sqrt(2)]# Initialize our qubit and measure it qc=QuantumCircuit(1,1)qc....
measure(q2[2],ca[0]) #Run in Aer job = qiskit.execute(qst_ghz, Aer.get_backend('qasm_simulator'), shots=10000) raw_results = job.result() 在发送结果状态X射线扫描拟合之前,我们必须删除Q2测量的寄存器,仅保留当寄存器为1时的结果。 new_result = deepcopy(raw_results) for resultidx, _ in...
# Still not sure how to use this, though it compiles gate2x2 = UnitaryGate(U2x2) # The best I could do so far was this: # Create the quantum circuit q = QuantumRegister(2) c = ClassicalRegister(2) qc = QuantumCircuit(q, c) qc.unitary(U2x2, range(1)) qc.measure(q[0], ...
r<=|a^2|,x=0(basisstate|0>r>|a^2|,x=1(basisstate|1> 其中r 是 [0,1) 范围内的随机数,a 是应该观察的量子位。" 我注意到 qiskit 中的 measure() 方法会使量子系统崩溃——这是我想防止的事情。如何将量子向量(或量子位)投射到 qiskit 中的二进制向量中(不破坏量子系统)?或者是否有允许我这...
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Once you've made your first quantum circuit, choose which primitive you will use. Starting with the Sampler, we usemeasure_all(inplace=False)to get a copy of the circuit in which all the qubits are measured: # 2. Add the classical output in the form of measurement of all qubitsqc_meas...
(includingElidePermutations,RemoveDiagonalBeforeMeasure,InverseCancellation, andCommutativeCancellation). We’ve changed the heuristic levels for layout and routing and readjusted the preset passes to give users better results in most of the situations. We’ve also changed the level 2 optimization stage ...
Theoperator backpropagation (OBP)addon that helps you reduce circuit depths by essentially slicing operations off the end of your circuit, and absorbing them into the observable you’ve set out to measure. Thecircuit cuttingaddon, which reduces the depth of transpiled circuits by decomposing entangl...
这可以被认为是围绕布洛赫向量[1,0,1](X轴和Z轴之间的线)的旋转,或者是在X和Z基之间转换量子比特的状态。 你可以使用下面的小部件来摆弄这些门: # Run the codeinthiscell to see the widgetfromqiskit_textbook.widgetsimportgate_demogate_demo(gates='pauli+h') ...