Bonneau, D, Kalasuwan, P, Laing, A, Lawson, T, Matthews, JCF, Peruzzo, A, Poulios, K, Shadbolt, P, Hadden, JP ![]() |
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) |
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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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