• Coherence

  • Nov 2 2021
  • Length: 30 mins
  • Podcast
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Coherence

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  • Summary

  • John Bartholomew talks about quantum memories and the challenges of keeping quantum information "coherent".

    John explores the limit of how long quantum information can be stored - a "quantum memory" is an important part of quantum information technologies. He was part of a team that set the record for this "coherence time" of about 6 hours (using super-cold glowing crystals). This might seem short compared to classical hard drives, but its excitingly long enough to imagine building a quantum sneaker-net. In fact this idea of coherence gets at the boundary between quantum and classical! John shares his own journey from a small country town to a commute within view of the Eiffel Tower in Paris, and the super-fridges from Episode 1 make a reappearance.

    Have you ever wanted a quantum USB adapter? Subscribe and share with your friends. We'd love to hear your quantum questions - send them to engage@equs.org and we'll try to answer them in future episodes!
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