World's Best Scientists 2026 revealed!

D-Index & Metrics

Physics

D-Index
106
Citations
37356
World Ranking
1343
National Ranking
121

Ian A. Walmsley publication distribution in Physics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Physics in 2026. The highlighted bar marks where Ian A. Walmsley sits on this spectrum.

103–122 publications: 7 scientists 123–142 publications: 10 scientists 143–162 publications: 31 scientists 163–182 publications: 35 scientists 183–202 publications: 53 scientists 203–222 publications: 81 scientists 223–242 publications: 85 scientists 243–262 publications: 112 scientists 263–282 publications: 114 scientists 283–302 publications: 126 scientists 303–322 publications: 136 scientists 323–342 publications: 162 scientists 343–362 publications: 155 scientists 363–382 publications: 156 scientists 383–402 publications: 134 scientists 403–422 publications: 145 scientists 423–442 publications: 147 scientists 443–462 publications: 131 scientists 463–482 publications: 131 scientists 483–502 publications: 116 scientists 503–522 publications: 106 scientists 523–542 publications: 103 scientists 543–562 publications: 87 scientists 563–582 publications: 84 scientists 583–602 publications: 94 scientists 603–622 publications: 70 scientists 623–642 publications: 76 scientists 643–662 publications: 60 scientists 663–682 publications: 54 scientists 683–702 publications: 60 scientists 703–722 publications: 48 scientists 723–742 publications: 64 scientists 743–762 publications: 48 scientists 763–782 publications: 37 scientists 783–802 publications: 43 scientists 803–822 publications: 34 scientists 823–842 publications: 36 scientists 843–862 publications: 32 scientists 863–882 publications: 32 scientists 883–902 publications: 31 scientists 903–922 publications: 25 scientists 923–942 publications: 15 scientists 943–962 publications: 24 scientists 963–982 publications: 13 scientists 983–1,002 publications: 21 scientists 1,003–1,022 publications: 21 scientists 1,023–1,042 publications: 16 scientists 1,043–1,062 publications: 9 scientists 1,063–1,082 publications: 19 scientists 1,083–1,102 publications: 11 scientists 1,103–1,122 publications: 17 scientists 1,123–1,142 publications: 11 scientists 1,143–1,162 publications: 7 scientists 1,163–1,182 publications: 4 scientists 1,183–1,202 publications: 10 scientists 1,203–1,222 publications: 8 scientists 1,223–1,242 publications: 16 scientists 1,243–1,262 publications: 4 scientists 1,263–1,282 publications: 10 scientists 1,283–1,302 publications: 5 scientists 1,303–1,322 publications: 7 scientists 1,323–1,342 publications: 4 scientists 1,343–1,362 publications: 8 scientists 1,363–1,382 publications: 6 scientists 1,383–1,402 publications: 7 scientists 1,403–1,422 publications: 3 scientists 1,423–1,442 publications: 4 scientists 1,443–1,462 publications: 4 scientists 1,463–1,468 publications: 3 scientists 1,469+ publications: 100 scientists
103 publications 1,469+

This scientist: 713 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,469 publications or more.

Ian A. Walmsley D-index placement in Physics in 2026

The chart shows the D-index (discipline H-index) distribution of Physics scientists ranked by Research.com in 2026. The highlighted bar marks where Ian A. Walmsley sits on this spectrum.

70–71 D-Index: 76 scientists 72–73 D-Index: 110 scientists 74–75 D-Index: 143 scientists 76–77 D-Index: 153 scientists 78–79 D-Index: 144 scientists 80–81 D-Index: 167 scientists 82–83 D-Index: 167 scientists 84–85 D-Index: 166 scientists 86–87 D-Index: 132 scientists 88–89 D-Index: 155 scientists 90–91 D-Index: 134 scientists 92–93 D-Index: 137 scientists 94–95 D-Index: 102 scientists 96–97 D-Index: 112 scientists 98–99 D-Index: 110 scientists 100–101 D-Index: 116 scientists 102–103 D-Index: 97 scientists 104–105 D-Index: 103 scientists 106–107 D-Index: 87 scientists 108–109 D-Index: 90 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 78 scientists 114–115 D-Index: 75 scientists 116–117 D-Index: 67 scientists 118–119 D-Index: 69 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 59 scientists 124–125 D-Index: 53 scientists 126–127 D-Index: 42 scientists 128–129 D-Index: 41 scientists 130–131 D-Index: 33 scientists 132–133 D-Index: 32 scientists 134–135 D-Index: 45 scientists 136–137 D-Index: 19 scientists 138–139 D-Index: 24 scientists 140–141 D-Index: 28 scientists 142–143 D-Index: 31 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 20 scientists 148–149 D-Index: 12 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 24 scientists 154–155 D-Index: 23 scientists 156–157 D-Index: 15 scientists 158–159 D-Index: 15 scientists 160–161 D-Index: 11 scientists 162–163 D-Index: 17 scientists 164–165 D-Index: 12 scientists 166–167 D-Index: 11 scientists 168–169 D-Index: 9 scientists 170–171 D-Index: 9 scientists 172–173 D-Index: 11 scientists 174–175 D-Index: 4 scientists 176–177 D-Index: 8 scientists 178–179 D-Index: 5 scientists 180–181 D-Index: 3 scientists 182–183 D-Index: 4 scientists 184 D-Index: 4 scientists 185+ D-Index: 99 scientists
70 D-Index 185+

This scientist: 106 D-Index — 65th percentile

65% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 185 D-Index or more.

Research.com Recognitions

  • 2018 - Rumford Medal, Royal Society (UK) for pioneering work in the quantum control of light and matter on ultrashort timescales
  • 2012 - Fellow of the Royal Society, United Kingdom
  • 2011 - Joseph F. Keithley Award For Advances in Measurement Science, American Physical Society
  • 2000 - Fellow of American Physical Society (APS) Citation For contributions to methods for quantum state measurement in matter and the characterization of wave fields in general

Overview

Ian A. Walmsley is affiliated with Imperial College London in the United Kingdom. Their research spans physics and astronomy as well as computer science, with a substantial focus on atomic and molecular physics, optics, and artificial intelligence. Their work intersects with multiple areas of quantum science and optical technologies.

The main topics of their research include:

  • Quantum Information and Cryptography
  • Quantum optics and atomic interactions
  • Neural Networks and Reservoir Computing
  • Quantum Computing Algorithms and Architecture
  • Quantum Mechanics and Applications
  • Mechanical and Optical Resonators
  • Photonic and Optical Devices

Notable recent publications by Ian A. Walmsley include:

  • "Transform-Limited Photons From a Coherent Tin-Vacancy Spin in Diamond," 2020, Physical Review Letters
  • "The boundary for quantum advantage in Gaussian boson sampling," 2022, Science Advances
  • "Quantum-enhanced interferometry with large heralded photon-number states," 2020, npj Quantum Information
  • "Photonic Topological Mode Bound to a Vortex," 2020, Physical Review Letters
  • "On-chip beam rotators, adiabatic mode converters, and waveplates through low-loss waveguides with variable cross-sections," 2022, Light Science & Applications

Frequent co-authors working alongside Ian A. Walmsley include:

  • Raj B. Patel
  • G. S. Thekkadath
  • Jacob F. F. Bulmer
  • Bryn A. Bell
  • Patrick M. Ledingham

Publications often appear in several venues, with the following being most common:

  • arXiv (Cornell University)
  • Optics Letters
  • Optics Express
  • Quantum 2.0 Conference and Exhibition
  • Physical Review Letters

The scientist has received several awards including the Rumford Medal from the Royal Society (UK) in 2018 for pioneering work in quantum control of light and matter on ultrashort timescales. They were elected Fellow of the Royal Society United Kingdom in 2012, received the Joseph F. Keithley Award for Advances in Measurement Science from the American Physical Society in 2011, and became a Fellow of the American Physical Society in 2000 with a citation recognizing contributions to methods for quantum state measurement in matter and the characterization of wave fields.

Best Publications

  • Spectral phase interferometry for direct electric-field reconstruction of ultrashort optical pulses.

    C. Iaconis;I. A. Walmsley

  • Boson Sampling on a Photonic Chip

    Justin B. Spring;Benjamin J. Metcalf;Peter C. Humphreys;W.Steven Kolthammer

  • Optimal design for universal multiport interferometers

    William R. Clements;Peter C. Humphreys;Benjamin J. Metcalf;W. Steven Kolthammer

  • Heralded generation of ultrafast single photons in pure quantum states

    Peter James Mosley;Jeff S Lundeen;Brian J Smith;Piotr Wasylczyk;Piotr Wasylczyk

  • Spectral information and distinguishability in type-II down-conversion with a broadband pump

    W. P. Grice;I. A. Walmsley

  • The quantum technologies roadmap: a European community view

    Antonio Acín;Immanuel Felix Bloch;Immanuel Felix Bloch;Harry M. Buhrman;Tommaso Calarco

  • Self-referencing spectral interferometry for measuring ultrashort optical pulses

    C. Iaconis;I.A. Walmsley

  • Quantum Physics Under Control

    Ian Walmsley;Herschel Rabitz

  • Continuous frequency entanglement: effective finite hilbert space and entropy control

    C. K. Law;I. A. Walmsley;J. H. Eberly

  • Eliminating frequency and space-time correlations in multiphoton states

    W. P. Grice;A. B. U’Ren;I. A. Walmsley

  • Optimal quantum phase estimation.

    U. Dorner;R. Demkowicz-Dobrzanski;B. J. Smith;J. S. Lundeen

  • Characterization of ultrashort electromagnetic pulses

    Ian A. Walmsley;Christophe Dorrer

  • Entangling Macroscopic Diamonds at Room Temperature

    K. C. Lee;M. R. Sprague;B. J. Sussman;J. Nunn

  • Experimental determination of the quantum-mechanical state of a molecular vibrational mode using fluorescence tomography.

    T. J. Dunn;I. A. Walmsley;S. Mukamel

  • Quantum memories - A review based on the European integrated project “Qubit Applications (QAP)”

    C. Simon;C. Simon;M. Afzelius;J. Appel;A. Boyer de la Giroday

  • Towards high-speed optical quantum memories

    K. F. Reim;J. Nunn;V. O. Lorenz;V. O. Lorenz;B. J. Sussman;B. J. Sussman

  • Experimental Demonstration of Quantum Effects in the Operation of Microscopic Heat Engines.

    James Klatzow;Jonas N. Becker;Patrick M. Ledingham;Christian Weinzetl

  • Tomography of quantum detectors

    J. S. Lundeen;A. Feito;H. Coldenstrodt-Ronge;K. L. Pregnell

  • Quantum enhanced multiple phase estimation.

    Peter C. Humphreys;Marco Barbieri;Animesh Datta;Ian A. Walmsley

  • Fiber-assisted detection with photon number resolution

    Daryl Achilles;Christine Silberhorn;Cezary Sliwa;Konrad Banaszek

Frequent Co-Authors

Brian J. Smith
Brian J. Smith QIMR Berghofer Medical Research Institute
Christine Silberhorn
Christine Silberhorn University of Paderborn
Christophe Dorrer
Christophe Dorrer University of Rochester
Herschel Rabitz
Herschel Rabitz Princeton University
Robert L. Kosut
Robert L. Kosut SC Solutions (United States)
Martin B. Plenio
Martin B. Plenio University of Ulm
Jens Eisert
Jens Eisert Freie Universität Berlin
Myungshik Kim
Myungshik Kim Imperial College London
Daniel A. Lidar
Daniel A. Lidar University of Southern California
Ursula Keller
Ursula Keller ETH Zurich

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