Anyone Listening? Quantum Cryptography Applications with Vlatko Vedral

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Upgrading isn't just for phone systems. Quantum information science tackles the upgrade of old existing technologies, which run by classical physics laws, to those that function in the quantum realm. It's as easy as it sounds: Vlatko Vederal tells listeners what this entails and what possibilities researchers like him are working toward.

Listen and learn

1. What order researchers must move in to do this transfer, from quantum cryptography research to large-scale quantum computing,
2. Why quantum cryptography offers a much more secure channel of communication, and
3. What timeline will this upgrade follow and how soon might we be carrying around quantum laptops.

Vlatko Vedral is a professor at University of Oxford in Quantum Information Science. He explains his field in helpful terms, comparing classical technologies with quantum technologies like quantum computing applications. His useful analogies give listeners a comprehensive picture of what this will look like and he provides a specific timeline. First, he says, quantum cryptography will take more of a center stage because it's the simplest one to begin with. Then there will be a shift towards implementing quantum memory, and finally, in the next ten years or so, we will see upgrades to large scale quantum computers.

His explanation about how quantum cryptography helps elucidate the challenges for all quantum applications. Basically, if two people are trying to communicate using quantum bits, anyone eavesdropping is forced to a take measurement and collapse the communication to classical properties. This makes their listening-in detectable because that action will emit a lower fidelity, giving them away.

He and Richard then discuss more fascinating potentials and the challenges they present, which tend to center on the error rate and physical necessities. For example, they must cool an atom to an extremely low temperature. As more cubits are added, the system gets hotter and noisier. Their only current solution is to do error correction, but researchers like Vedral are working towards better techniques. So listen in for these exciting possibilities.

For more, see his website: quantumlah.org/research/group/vlatko.

Available on Apple Podcasts: apple.co/2Os0myK

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