Niels Bohr claimed that “those who are not shocked when they first come across quantum theory cannot possibly have understood it.” 1 Albert Einstein, perplexed by a curious correlation between particles, called it “a spooky action at a distance” 2 – a property now called entanglement. Quantum mechanics is commonly considered an arcane subject, counterintuitive not only to a general audience but even to its own creators. Virtual Lab makes it possible to explore the nature of quantum physics (state evolution, entanglement, and measurement), to simulate quantum computing (e.g., the Deutsch-Jozsa algorithm), to use quantum cryptography (e.g., the Ekert protocol), to explore counterintuitive quantum phenomena (e.g., quantum teleportation and the Bell inequality violation), and to recreate historical experiments (e.g., the Michelson–Morley interferometer). These tools are available as open-source TypeScript packages – Quantum Tensors and BraKetVue. These quantum visualizations can be applied to any discrete quantum system, including quantum circuits with qubits and spin chains. It includes interactive visualizations of the ket notation and a heatmap-like visualization of quantum operators.

We introduce visual representation of entangled states and entanglement measures. Quantum Game serves as an introduction to Virtual Lab features, approachable for users with no prior exposure to quantum mechanics. The sandbox mode allows users to compose arbitrary setups. Users can place typical optical elements (such as beam splitters, polarizers, Faraday rotators, and detectors) with a drag-and-drop graphical interface.

It supports a real-time simulation of up to three entangled photons. Virtual Lab by Quantum Flytrap is a no-code online laboratory of an optical table, presenting quantum phenomena interactively and intuitively.

Quantum minesweeper 1