It’s April 14th, World Quantum Day.World Quantum day is an initiative started by quantum scientists from over 65 countries on April 14, 2021, as a countdown to the first global celebration on April 14, 2022. It’s become an annual event since then.Why April 14th. Well the date wasn’t a random choice (no pun intended.)The date, April 14th (4.14), was chosen as a reference to the rounded first three digits of Planck’s constant ($(4.14 \times 10^{-15} eV \cdot s)$), a fundamental constant in quantum mechanics. It’s nice to know that there is a constant amongst all the uncertainty. The reasons behind…