Integrated quantum photonics

Bonneau, D, Kalasuwan, P, Laing, A, Lawson, T, Matthews, JCF, Peruzzo, A, Poulios, K, Shadbolt, P, Hadden, JP ORCID: https://orcid.org/0000-0001-5407-6754, Harrison, JP, Stanley-Clark, AC, Marseglia, L, Ho, Y-LD, Patton, BR, Rarity, JG, Jiang, P, Halder, M, Lobino, M, Politi, A, Rodas Verde, M, Zhou, X-Q, Thompson, MG and O'Brien, JL 2010. Integrated quantum photonics. Presented at: 23rd Annual Meeting of the IEEE Photonics Society, Denver, Colerado, 7-11 November 2010. 2010 23rd Annual Meeting of the IEEE Photonics Society. IEEE, p. 542. 10.1109/PHOTONICS.2010.5699001

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Abstract

Abstract: We describe our developments in integrated quantum photonics, including waveguide circuits to implement quantum logic operations, quantum metrology and quantum walks. Of the various approaches to quantum computing [1], photons are particularly appealing for their low-noise properties and ease of manipulation at the single qubit level [2]. Encoding quantum information in photons is also an appealing approach to quantum communication, metrology [3], measurement [4] and other quantum technologies [5]. We have developed an integrated waveguide approach to photonic quantum circuits for high performance, miniaturization and scalability [6]. We demonstrate high-fidelity silica-on-silicon integrated optical realizations of key quantum photonic circuits, including two-photon quantum interference and a controlled-NOT logic gate [7]. We have demonstrated controlled manipulation of up to four photons on-chip, including high-fidelity single qubit operations, using a lithographically patterned resistive phase shifter [8]. We have used this architecture to implement a small-scale compiled version of Shor’s quantum factoring algorithm [9] (Fig. 1) and combined it with superconducting single photon detectors [10]. We will describe our latest results on quantum process discrimination [11], quantum walks of correlated particles [12], heralded entanglement generation for quantum metrology [13], adding control to arbitrary quantum operations [14] and enhanced photon emission from NV centres [15].

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Completion
Status:	Published
Schools:	Physics and Astronomy
Publisher:	IEEE
ISBN:	978-1-4244-5368-9
Last Modified:	24 Oct 2022 07:07
URI:	https://orca.cardiff.ac.uk/id/eprint/114123

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