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Compound Semiconductor Quantum Technology

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Semiconductor materials with the thickness of only a single atomic layer can be used to sense electric fields, magnetic fields and temperature. Until now the sensitivity of a sensor made of Boron Nitride was limited by how long the spins retain their quantum state. We have been working with collaborators to find a way round this problem using strong continuous microwave fields, and this work is now published in Nature Communications. The figure shows the natural decay of the coherence in red, compared to what can be achieved with this technique in black. “Coherence protection of spin qubits in hexagonal boron nitride” Nature Communications 14, 461 (2023) is now available at https://www.nature.com/articles/s41467-023-36196-7. Thanks to the QCS hub for funding this work! Now at the LasIonDef scientific school in Turin. Thanks to Prof Paolo Olivero for hosting us and taking me to this lucky golden bull. I am assured that whatever scientific success I wish for whilst standing on it will come true. I am at the kick off of the UK 'Materials for Quantum' Network in Manchester today. Huge turnout and lots to talk about with other researchers. I have been at the Quantum Computing and Simulation Hub Forum meeting in Oxford today, listening to some great talks, including excellent results from our collaborator in Exeter University, Dr Isaac Luxmoore. Congratulations to Joseph, who won the Best Student Talk Prize at the UK Nitrides winter meeting for his talk on red colour centres in aluminium nitride. A great start to the new year. Dr Reza Hekmati Dr Sam Bishop. A beautiful pink diamond in the lab courtesy of Prof Shane Eaton, who visits us this week. A high density of defects in the crystal, known as colour centres, give it that hue. I have been at Cardiff University for 5 years.

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