A graphic representation of the two-photon quantum walk. This unique behavior simulates the quantum walks in more complex spaces. The size, color and intensity of the points corresponds to the likelihood of the two photons appearing each location. The two areas of increased probability is a hallmark of quantum behavior.
The photonic chip next to a UK penny. The chip contains micrometer and sub-micrometer features and guide light using a network of waveguides. The output of this network can be seen on the surface of the chip.
Research physicists Jonathan Matthews (left) and Kostas Poulios aligning the quantum optical chip. The photons are injected into the chip using optical fibre and requires precision alignment.
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