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Quantum photonics

Quantum optics on a chip

Researchers have demonstrated a reconfigurable photonic circuit on a chip that can create a four-photon entangled state. The scalability and compactness of the device opens the door towards practical quantum computation.

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Figure 1: The new device and its proposed use for general interferometers.

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Correspondence to Howard M. Wiseman.

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Berry, D., Wiseman, H. Quantum optics on a chip. Nature Photon 3, 317–319 (2009). https://doi.org/10.1038/nphoton.2009.84

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