Are advances in quantum science good or fad for encryption? It is both. It is believed that quantum computers can break many widely used encryption systems too easily: Quantum computing is a major threat to crypto, says the NSA. Cryptographers are already interested in post-quantum crypto – they are working to develop new algorithms that will work in this new world.
Quantum world also promises new tools for security applications: Quantum Teleportation and Quantum Key Distribution.For example researchers in the US have successfully teleported information encoded into particles of light over 100 kilometres of optical fibre, smashing the previous distance record of 25 km.
To build those technologies we need to use Quantum entanglement. Quantum entanglement is a physical phenomenon that occurs when pairs or groups of particles are generated or interact in ways such that the quantum state of each particle cannot be described independently. The next question is how to implement this Quantum entanglement?
Uses for Quantum Entanglement with Shanni Prutchi article tells about presentation from the Hackaday SuperConference. Shanni Prutchi presented her talk on quantum entanglement of photons in a way that is both approachable, and leaves you with plenty of hints for further study. Check it out in the video of the presentation:
Shanni explains the current methods of identifying two entangled photons. She is not just explaining how one could conduct this experiment, she is explaining how she did conduct this experiment. Amazing stuff.
Where to get more information on Quantum Entanglement of Photons? Original paper on the experiment at http://arxiv.org/pdf/quant-ph/9810003.pdf adds some more clarity. Shanni Prutchi is also a co-authorship of the book Exploring Quantum Physics Through Hands-On Projects, which try according the authors to help the readers build an intuitive understanding of the principles behind quantum mechanics through practical construction and replication of the original experiments. There are additional information and whitepapers at http://www.diyPhysics.com.