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Showing 1–22 of 22 results
Advanced filters: Author: Ian A. Walmsley Clear advanced filters
    • Ian A. Walmsley
    Comments & Opinion
    Nature
    Volume: 371, P: 451
  • Multiple scattering complicates femtosecond optics such that phase conjugation allows spatial focusing and imaging through a multiple scattering medium, but temporal control is problematic. McCabeet al. report the full spatio-temporal characterization and recompression of a femtosecond speckle field.

    • David J. McCabe
    • Ayhan Tajalli
    • Béatrice Chatel
    Research
    Nature Communications
    Volume: 2, P: 1-5
  • While most quantum optical techniques reveal either the wave or particle nature of light, weak-field homodyne detection combines wave- and particle-like descriptions. Here, Donati et al.employ this hybrid detection scheme to study the coherence between photon number states across two-mode entangled states.

    • Gaia Donati
    • Tim J. Bartley
    • Ian A. Walmsley
    Research
    Nature Communications
    Volume: 5, P: 1-6
  • Three different ultrafast probes investigate a non-adiabatic phase transition and find substantial evidence of topological defects inhibiting the reformation of the equilibrium phase.

    • Alfred Zong
    • Anshul Kogar
    • Nuh Gedik
    Research
    Nature Physics
    Volume: 15, P: 27-31
  • Teleportation of a photonic qubit is demonstrated on a reconfigurable photonic chip. All of the key elements of the teleportation protocol are performed. The average fidelity for the three linearly independent quantum states is higher than the classical limit, which certifies the capability of teleporting a general quantum state.

    • Benjamin J. Metcalf
    • Justin B. Spring
    • Ian A. Walmsley
    Research
    Nature Photonics
    Volume: 8, P: 770-774
  • By developing full quantum detector tomography, researchers simultaneously characterize the wave- and photon-number sensitivities of quantum-optical detectors to yield the largest ever parametrization in a quantum tomography experiment. The presented results reveal the role of coherence in quantum measurements and demonstrate the tunability of hybrid quantum-optical detectors.

    • Lijian Zhang
    • Hendrik B. Coldenstrodt-Ronge
    • Ian A. Walmsley
    Research
    Nature Photonics
    Volume: 6, P: 364-368
  • For future optical information processing applications, including quantum computing, ever more complex quantum photonic devices are needed. Metcalf et al. present an integrated photonic device capable of three-photon quantum operation, including Hong-Ou-Mandel-type interference between three photons.

    • Benjamin J. Metcalf
    • Nicholas Thomas-Peter
    • Ian A. Walmsley
    Research
    Nature Communications
    Volume: 4, P: 1-7
  • Phase estimation is an important element of quantum metrology, but the influence of noise cannot always be well characterized. Vidrighin et al.analyse and experimentally demonstrate methods providing simultaneous estimation of a phase shift and the amplitude of phase diffusion at the quantum limit.

    • Mihai D. Vidrighin
    • Gaia Donati
    • Ian A. Walmsley
    Research
    Nature Communications
    Volume: 5, P: 1-7
  • Recent progress in manipulating quantum states of light and matter brings quantum-enhanced measurements closer to prospective applications. The current challenge is to make quantum metrologic strategies robust against imperfections.

    • Konrad Banaszek
    • Rafał Demkowicz-Dobrzański
    • Ian A. Walmsley
    Comments & Opinion
    Nature Photonics
    Volume: 3, P: 673-676
  • This study develops a programmable quantum processor, named Abacus, and applies it to Gaussian boson sampling tasks targeting drug discovery challenges.

    • Shang Yu
    • Zhi-Peng Zhong
    • Guang-Can Guo
    ResearchOpen Access
    Nature Computational Science
    Volume: 3, P: 839-848
  • A lucid account of optical information-processing technology.

    • Ian Walmsley
    Books & Arts
    Nature
    Volume: 416, P: 477
  • Coulomb Explosion imaging is a promising technique to study the ultrafast nuclear dynamics which underpin molecular photochemistry. By initiating Coulomb explosion through soft X-ray ionization, the authors are able to image ultrafast nuclear dynamics of a prototypical photoreaction.

    • James Unwin
    • Felix Allum
    • Ruaridh Forbes
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-11
  • Climate resilient development has become the new paradigm for sustainable development influencing theory and practice across all sectors globally—gaining particular momentum in the water sector, since water security is intimately connected to climate change. Climate resilience is increasingly recognised as being inherently political, yet efforts often do not sufficiently engage with context-specific socio-ecological, cultural and political processes, including structural inequalities underlying historically produced vulnerabilities. Depoliticised approaches have been shown to pose barriers to concerted and meaningful change. In this article, world-leading water specialists from academic and practitioner communities reflect on, and share examples of, the importance of keeping people and politics at the centre of work on climate resilient water security. We propose a roadmap to meaningfully engage with the complex politics of climate resilient water security. It is critical to re-politicise climate resilience to enable efforts towards sustainable development goal 6—clean water and sanitation for all.

    • Catherine Fallon Grasham
    • Roger Calow
    • Hashim Zaidi
    Comments & OpinionOpen Access
    npj Clean Water
    Volume: 4, P: 1-4