Breakthrough in Japan: First Entangled Measurement of W States
Physicists in Japan have achieved a major breakthrough by performing a collective quantum measurement on a W state comprising three entangled photons.
This phenomenon, known as quantum entanglement, is the foundation of various technologies such as quantum cryptography and quantum computing, where measuring one particle immediately reveals information about the other, even if they are light-years apart.
- Entangled states are notoriously difficult to control.
- The team's achievement marks a significant step towards the practical development of quantum technologies.
Imagine two particles so interconnected that measuring one immediately reveals information about the other, even if the particles are light-years apart.
Physicists usually measure entangled particles using a technique known as quantum tomography, but this new method allows for the analysis of three entangled photons at once rather than one at a time.
This breakthrough, reported in Science Advances, could pave the way for robust quantum communication and scalable networks.
Author's summary: Japanese physicists achieve first entangled measurement of W states.