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Atomic and Laser Physics
Credit: Jack Hobhouse

Ian Walmsley

Visiting Professor

Sub department

  • Atomic and Laser Physics
Ian.Walmsley@physics.ox.ac.uk
  • About
  • Publications

High quantum efficiency photon-number-resolving detector for photonic on-chip information processing

Optica Publishing Group (2013) qm4l.1

Authors:

Brice Calkins, Paolo L Mennea, Adriana E Lita, Benjamin J Metcalf, W Steven Kolthammer, Antia Lamas Linares, Justin B Spring, Peter C Humphreys, Richard P Mirin, James C Gates, Peter GR Smith, Ian A Walmsley, Thomas Gerrits, Sae Woo Nam
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Surpassing the conventional Heisenberg limit using classical resources

Optica Publishing Group (2013) qf2b.2

Authors:

Xian-Min Jin, Martin Lebrat, Lijian Zhang, Kachung Lee, Tim Bartley, Marco Barbieri, Joshua Nunn, Animesh Datta, Ian A Walmsley
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Generalized multishearing interferometry for the complete multidimensional characterization of optical beams and ultrashort pulses

2012 Conference on Lasers and Electro-Optics, CLEO 2012 (2012)

Authors:

AS Wyatt, J Biegert, IA Walmsley

Abstract:

We demonstrate increased accuracy and precision in the reconstruction of the multidimensional phase of electromagnetic fields based on multiple spectral shearing interferometry measurements made with shears of an arbitrary magnitude. © 2012 OSA.
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Synchronizing single photons with quantum memories

2012 Conference on Lasers and Electro-Optics, CLEO 2012 (2012)

Authors:

J Nunn, NK Langford, T Champion, MR Sprague, PS Michelberger, KC Lee, XM Jin, D England, WS Kolthammer, IA Walmsley

Abstract:

Without deterministic single photon sources, multiphoton rates fall exponentially with the number of photons required, making practical photonics unfeasible. We show how quantum memories improve multiphoton rates by many orders of magnitude. © 2012 OSA.
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Turning classical states quantum with linear optics and photon counting

2012 Conference on Lasers and Electro-Optics, CLEO 2012 (2012)

Authors:

TJ Bartley, G Donati, XM Jin, JB Spring, M Barbieri, BJ Smith, A Datta, L Zhang, IA Walmsley

Abstract:

We demonstrate a method to transmute classical light into a quantum state without invoking any nonlinear optical processes. Using a tunable beam splitter and photon number resolving measurement, we create a novel non-Gaussian state. © 2012 OSA.
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