2 Qubit Hilbert Space Navigator

Action:$\leftarrow$Put cursor in here
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$\theta-$$\theta+$$\theta^{\leftarrow}$$\theta^{\rightarrow}$$\phi^{\leftarrow}$$\phi^{\rightarrow}$$\phi+$$\phi-$
$$ \cos{\theta_0}\left|00\right> + e^{i\phi_0}\cos{\theta_1}\sin{\theta_0}\left|01\right> + e^{i\phi_1}\cos{\theta_2}\sin{\theta_1}\sin{\theta_0}\left|10\right> + e^{i\phi_2}\sin{\theta_2}\sin{\theta_1}\sin{\theta_0}\left|11\right> $$
Grumpy CatLil BubKeyboard CatMaru
+$i\left|00\right>$+$i\left|01\right>$+$i\left|10\right>$+$i\left|11\right>$
$\theta_0=\frac{\pi}{2}\times$$\theta_1=\frac{\pi}{2}\times$$\theta_2=\frac{\pi}{2}\times$
$\phi_0=\frac{\pi}{2}\times$$\phi_1=\frac{\pi}{2}\times$$\phi_2=\frac{\pi}{2}\times$