Other Publications (1)
Articles by Lucia Caspani in JoVE
Generation and Coherent Control of Pulsed Quantum Frequency Combs Benjamin MacLellan*1, Piotr Roztocki*1, Michael Kues1,2, Christian Reimer1, Luis Romero Cortés1, Yanbing Zhang1, Stefania Sciara1,3, Benjamin Wetzel1,4, Alfonso Cino3, Sai T. Chu5, Brent E. Little6, David J. Moss7, Lucia Caspani8, José Azaña1, Roberto Morandotti1,9,10 1Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunications (INRS-EMT), 2School of Engineering, University of Glasgow, 3Department of Energy, Information Engineering and Mathematical Models, University of Palermo, 4School of Mathematical and Physical Sciences, University of Sussex, 5Department of Physics and Material Science, City University of Hong Kong, 6State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, 7Centre for Micro Photonics, Swinburne University of Technology, 8Institute of Photonics, Department of Physics, University of Strathclyde, 9Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 10National Research University of Information Technologies, Mechanics and Optics A protocol is presented for the practical generation and coherent manipulation of high-dimensional frequency-bin entangled photon states using integrated micro-cavities and standard telecommunications components, respectively.
Other articles by Lucia Caspani on PubMed
On-chip Generation of High-dimensional Entangled Quantum States and Their Coherent Control Nature. | Pubmed ID: 28658228 Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics, for increasing the sensitivity of quantum imaging schemes, for improving the robustness and key rate of quantum communication protocols, for enabling a richer variety of quantum simulations, and for achieving more efficient and error-tolerant quantum computation. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2). Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode.