Applied Physics

Integrated Quantum Optics

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Science  23 Dec 2011:
Vol. 334, Issue 6063, pp. 1605
DOI: 10.1126/science.334.6063.1605-b

Applications based on quantum optics depend on the ability to produce and detect single photons and to reliably send them around circuits where the information they carry can be manipulated. Most approaches to date have been modular, with photon production, detection, and manipulation being separate elements. The poor coupling between these separate elements incurs high losses that render reliable applications impractical. Gerrits et al. have developed an integrated approach that combines a superconducting transition edge sensor capable of resolving individual photons with a silica optical waveguide. The integrated on-chip approach results in low losses for the photons and therefore presents a feasible route toward scalable photonic quantum processing devices that are sufficiently complex to be useful in applications such as quantum computing, metrology, and simulation.

Phys. Rev. A 84, 60301R (2011)

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