Breakthrough Research Paves Way for Quantum Circuits

Natalia Berloff of DAMTP and the experimental groups of Jeremy Baumberg (Cavendish) and Dr Natalia BerloffPavlos Savvidis (Crete) have reported in the January 10, 2012 issue of Nature Physics that they built a semiconductor chip that converts electrons into a quantum state that emits light, but is large enough to see by eye. This may allow a new generation of ultrasensitive devices to measure gravity, magnetic field, and create quantum circuits.

Dr Berloff is an expert on mathematical modelling of quantum fluids, and her particular contribution was to model the behaviour of new particles called 'polaritons' that are formed when laser beam was shining on the chip.

The work has generated international interest. For the full story see