# Videos

Travelling Salesman Problem

What is the shortest possible route that visits each city exactly once and returns to the origin city?

Interferometer - wave mode and particle mode

Quantum objects are neither particles nor waves, they possess both particle aspects and wave aspects.

Hardy's Paradox in 4 mins

Through Hardy's paradox - a thought experiment - we see how quantum outcomes cannot be predicted using classical logic.

SI units & Quantum Mechanics

Since 2019, SI units have been defined using quantum mechanics. Let us find out how it is done.

Interferometer and Uncertainties

In this dual, we compare the uncertainty relations and the inequalities given by an interferometer.

Introduction to Quantum State Estimation - part 1

In this video, we discuss the difference between linear inversion and maximum likelihood in quantum state estimation.

Verifiably Fair Lottery - on Bell's Paradox

Watch the story of Alice and Bob on how they are cheated by the "verifiably fair lottery" using quantum correlations.

The Joint Distribution Argument - on Bell's Paradox

With randomness, quantum universe is much more fun than the classical one.

A Nonlocal Game - on Bell's Paradox

A simple game to explain the power of entanglement and how Bell's inequality can be violated.

No Cloning Theorem in 5 mins

In this video, we go through the simple proof of the no-cloning theorem and find out how unknown quantum state cannot be copied.

How to give confusing explanations of Entanglement?

In this video, we explain common mistakes when explaining what entanglement is.

How do we know that there are photons?

In this video, we go through the history on the discovery of photons, talk about the major players and their contributions.