Coherence

Coherence

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!

Episoder(20)

Rephasing

Rephasing

It's been a long time without episodes, but we've "rephased" our podcast to restore coherence! Season 2 is coming soon, but this is a bonus episode to catch up on some highlights from the world of Qua...

17 Nov 202333min

Light

Light

Halina Rubinsztein-Dunlop explains how quantum light can make tiny tractor-beams to move and wiggle things.Halina is widely recognised for her substantial achievements in moving things with light. "Op...

7 Des 202131min

Noise

Noise

Kirk McKenzie talks about quantum "noise" and some of the most impressively precise measurements ever made.Kirk brings quantum precision to some of the biggest questions about our planet and universe....

30 Nov 202130min

Ignorance

Ignorance

Jacq Romero reveals that "ignorance" can be a quantum superpower.Jacq has won numerous awards for her research into the shape of photons, and has brought this work into mainstream quantum information....

23 Nov 202129min

Spin

Spin

Glen Harris discusses whirlpools and the famously quantum property of "spin".Glen's love of hard challenges has led him to study quantum optomechanics, the art of using light to measure (or cause) ext...

16 Nov 202132min

Duality

Duality

Mike Tobar explains how quantum "duality" limits ultra-precise measurements.Mike breaks this standard quantum limit of measurement precision in order to explore things as diverse as dark matter, gravi...

9 Nov 202128min

Systems

Systems

Quantum doesn't have to be tiny! Magdalena Zych talks about quantum "systems" on a cosmic scale.Magdalena is a theoretician who ponders questions that straddle quantum physics and relativity - which i...

26 Okt 202127min

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