Publication news

Two new papers from the group, both about getting light to behave one photon at a time (read more).

Towards deterministic quantum non-linear optics with Cu2O Rydberg polaritons
Perspective, accepted in Science Bulletin
Photons normally pass straight through one another. Quantum computers built from light need them to interact instead, and to do so reliably every time. This Perspective looks at cuprous oxide, a material in which photons can be made to interact on a chip, explains why the effect is not yet strong enough, and sets out what has to improve to get there.

Written with David Petrosyan (FORTH), Matthew P. A. Jones (Durham) and Pavlos Savvidis (Westlake).

Oscillation-Free Unconventional Photon Blockade from Quadrature Driving of a Kerr Dimer
Accepted in Physical Review A
Many quantum technologies need a light source that emits exactly one photon at a time. Normally that calls for a strong optical nonlinearity, which few materials offer. This paper shows that two ordinary, weakly nonlinear cavities will do the job if they are driven out of step with each other — and that the resulting signal is slow enough to be measured with standard detectors.

Thanks to our collaborators at FORTH, Durham and Westlake.