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How to use set_pa method in fMBT

Best Python code snippet using fMBT_python

blochSphere.py

Source:blochSphere.py

...41        if not(-np.pi <= phi <= np.pi):42            phi = phi%(2*np.pi) - 2*np.pi43        self.a = np.cos(theta/2) #jÃ¡ estÃ¡ com a fase zerada44        self.b = np.sin(theta/2)*np.exp(1j*phi)45    def set_pa(self, a, b):46        # assign values to a, b47        aux = np.abs(a)**2 + np.abs(b)**248        self.a = np.sqrt(np.abs(a)**2/aux)49        self.b = np.sqrt(np.abs(b)**2/aux)*(b/np.abs(b))*(np.abs(a)/a)50    def set_wf(self, colvec):51        # from column vector, assign values to a, b52        a = colvec[0,0]53        b = colvec[1,0]54        self.set_pa(a, b)55    @staticmethod56    def plot(*args, **kwargs):57        def repel_from_center(x, y, z, m=0.1):58            return x + (-m if x < 0 else m), \59                    y + (-m if y < 0 else m), \60                    z + (-m if z < 0 else m)61        def bloch_sphere():62            fig = plt.figure()63            ax = fig.add_subplot(111, projection='3d')64            u = np.linspace(0, 2*np.pi, 30)65            v = np.linspace(0, np.pi, 20)66            x = 1 * np.outer(np.cos(u), np.sin(v))67            y = 1 * np.outer(np.sin(u), np.sin(v))68            z = 1 * np.outer(np.ones(np.size(u)), np.cos(v))69            ax.plot_wireframe(x, y, z, color='gray', linestyle=':')70            ax.plot3D([-1, 1], [0, 0], [0, 0], color='k', linestyle='--')71            ax.text(-1.1, 0, 0, '$|-\\rangle$', 'x', horizontalalignment='right', \72                fontweight='bold', fontsize=11)73            ax.text(1.1, 0, 0, '$|+\\rangle$', 'x', horizontalalignment='left', \74                fontweight='bold', fontsize=11)75            ax.plot3D([0, 0], [-1, 1], [0, 0], color='k', linestyle='--')76            ax.text(0, -1.1, 0, '$|-i\\rangle$', 'y', horizontalalignment='right', \77                fontweight='bold', fontsize=11)78            ax.text(0, 1.1, 0, '$|i\\rangle$', 'y', horizontalalignment='left', \79                fontweight='bold', fontsize=11)80            ax.plot3D([0, 0], [0, 0], [-1, 1], color='k', linestyle='--')81            ax.text(0, 0, -1.1, '$|1\\rangle$', 'x', horizontalalignment='center', \82                fontweight='bold', fontsize=11)83            ax.text(0, 0, 1.1, '$|0\\rangle$', 'x', horizontalalignment='center', \84                fontweight='bold', fontsize=11)85            limits = np.array([getattr(ax, f'get_{axis}lim')() \86                for axis in 'xyz'])87            ax.set_box_aspect(np.ptp(limits, axis = 1))88            ax._axis3don = False89            return ax90        if kwargs.get('title', False):91            title = kwargs['title']92        else:93            title = ''94        ax = bloch_sphere()95        for arg in args:96            label, color = '| ', 'r'97            if type(arg) == tuple:98                if len(arg) == 3: color = arg[2]99                label = '$|' + arg[1] + '\\rangle$'100                arg = arg[0]101            ax.quiver(0, 0, 0, arg.x, arg.y, arg.z, color=color)102            ax.text(*repel_from_center(arg.x, arg.y, arg.z), label, 'x', \103                horizontalalignment='center', fontweight='bold', fontsize=11, \104                color=color)105        plt.title(title)106        plt.show()107# lines to run just when this script is running, if there's another script importing a qubit from the original script, this snippet won't run108if __name__ == "__main__":109    q = Qubit()110    print(q)111    # q.set_bs(50*2*np.pi+3/2*np.pi, 50*2*np.pi+3/2*np.pi)112    # q.set_pa(-1j*np.sqrt(2)/2, (np.sqrt(2)/2))113    q.set_pa(np.sqrt(25), np.sqrt(75))114    # print(q.a, q.b)115    # print(np.sqrt(2)/2, 1j*np.sqrt(2)/2)...

qubit.py

Source:qubit.py

...34        if(not(-np.pi <= phi <= np.pi)):35            phi = phi%(2*np.pi) - 2*np.pi36        self.theta = theta37        self.phi   = phi38    def set_pa(self, a, b):39        aux = np.abs(a)**2 + np.abs(b)**240        a = np.sqrt(abs(a)**2/aux)41        b = np.sqrt(abs(b)**2/aux)42        ma, pa = np.abs(a), np.angle(a)43        mb, pb = np.abs(b), np.angle(b)44        self.a = ma45        self.b = mb*np.exp(1j*(pb-pa))46    # def validate(self):47    #     if(np.sqrt(np.abs(self.a)**2 + np.abs(self.b)**2) < 1):48if __name__ == "__main__":49    q = Qubit()50    print(q)51    q.set_bs(50*2*np.pi+3/2*np.pi, 50*2*np.pi+3/2*np.pi)52    q.set_pa(np.sqrt(2)/2, -1j*(np.sqrt(2)/2))53    print(q.a, q.b)...

neuronlib.py

Source:neuronlib.py

...8        x = []9        for i in range(n_inp):10            x.append(1)11        return x12    def set_pa(self, inputs):13        pa = 014        for i in range(len(inputs)):15            pa += inputs[i] * self.weights[i]16        pa += self.bias17        return pa18    def learn(self, inputs, target, to_print=False):19        out, pa = self.output(inputs)20        diff = out - target21        cost = (out - target) ** 222        if to_print:23            print('input:', inputs, 'target:', target, 'Predizione:', out, 'Costo:', cost)24        for i, w in enumerate(self.weights):25            self.weights[i] -= self.lr * 2 * diff * inputs[i] * self.sigmoide(pa, deriv=True)26        self.bias -= self.lr * 2 * diff * self.sigmoide(pa, deriv=True)27        return out28    def output(self, inputs):29        pa = self.set_pa(inputs)30        return self.sigmoide(pa), pa31    def sigmoide(self, pa, deriv=False):32        if not deriv:33            return 1 / (1 + math.exp(-pa))34        else:...

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