2017/09/20 by R. Santagati, R Santagati, J W Silverstone +25 · 40 citations
Computer Science · Physics and Astronomy · #Embedding #Mechanical and Optical Resonators #Neural Networks and Reservoir Computing #Photonics #Property (philosophy) #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum entanglement #Quantum information #Quantum network #Range (aeronautics) #State (computer science) #quant-ph
paper · pdf · doi:10.1088/2040-8986/aa8d56
published in Journal of Optics 19(11), 114006 (IOP Publishing) · The data from this study are available from the open data repository Figshare at https://doi.org/10.6084/m9.figshare.5464381.v1
openalex created_date 2017/09/15 · openalex publication_date 2017/09/20 · arxiv created 2017/10/20 · arxiv updated 2017/10/23 · openalex updated_date 2026/08/05
Entanglement is a fundamental property of quantum mechanics, and is a primary resource in quantum information systems. Its manipulation remains a central challenge in the development of quantum technology. In this work, we demonstrate a device which can generate, manipulate, and analyse two-qubit entangled states, using miniature and mass-manufacturable silicon photonics. By combining four photon-pair sources with a reconfigurable six-mode interferometer, embedding a switchable entangling gate, we generate two-qubit entangled states, manipulate their entanglement, and analyse them, all in the same silicon chip. Using quantum state tomography, we show how our source can produce a range of entangled and separable states, and how our switchable controlled-Z gate operates on them, entangling them or making them separable depending on its configuration.