Photons & Spins Synced, Quantum Physics, Mete Atature, QuanTour

In this episode

• How Mete’s group studies light and matter one photon and one electron spin at a time, to build quantum networks and quantum sensors
• How a quantum dot can entangle a photon with an electron spin, and why quantum repeaters, not amplifiers, are needed to carry that entanglement over long distances
• Why no single material does it all: quantum dots for photons, diamond for long-lived spins, and hexagonal boron nitride that works at almost any temperature
• How nanodiamond sensors inside living cells and worms can report temperature, magnetic fields and pH from the inside
• His path from Bilkent University in Turkey via Boston and ETH Zurich to Cambridge, and the result he picked: showing that a single photon’s electric field can be quieter than vacuum
• His three wishes: keep working with great teams, find unallocated time to think, and steady baseline funding

Key Takeaways

• Professor at University of Cambridge studying light–matter interaction at the quantum level in semiconductors, diamond and 2D materials, for quantum networks and quantum sensors.
• Adding the electron spin to the single photon opens a new dimension: photon–spin entanglement lets you distribute entanglement between distant nodes and use quantum dots as quantum repeaters (no amplifiers, per no-cloning).
• No single material wins: quantum dots are the best single-photon source, diamond the best spin/memory, hBN is temperature-agnostic (good for space).
• Nanodiamond NV-centre sensors can go inside living cells (even C. elegans) to non-destructively map magnetic field, pH, temperature and viscosity at the nanoscale, a surprise life-sciences application.
• Career: Turkey → Boston → ETH Zurich → Cambridge; champions researcher mobility. Wishes: keep the same calibre of team, unallocated thinking time, and steady baseline funding.

About the guest

Mete Atature is a Professor at the University of Cambridge in the UK, whose research explores the interaction of light and matter at the quantum level, including quantum sensing networks and secure communication.