Dr Nathan Langford

  1. 2013
  2. Published

    Errors in quantum tomography: diagnosing systematic versus statistical errors

    Langford, N. K., 1 Mar 2013, In: New Journal of Physics. 15, 24 p., 035003.

    Research output: Contribution to journalArticlepeer-review

  3. Published

    Boson Sampling on a Photonic Chip

    Spring, J. B., Metcalf, B. J., Humphreys, P. C., Kolthammer, W. S., Jin, X-M., Barbieri, M., Datta, A., Thomas-Peter, N., Langford, N. K., Kundys, D., Gates, J. C., Smith, B. J., Smith, P. G. R. & Walmsley, I. A., 15 Feb 2013, In: Science. 339, 6121, p. 798-801 4 p.

    Research output: Contribution to journalArticlepeer-review

  4. Published

    Multi-photon quantum interference in a multi-port integrated photonic device

    Metcalf, B. J., Thomas-Peter, N., Spring, J. B., Kundys, D., Broome, M. A., Humphreys, P., Jin, X-M., Barbieri, M., Kolthammer, W. S., Gates, J. C., Smith, B. J., Langford, N. K., Smith, P. G. R. & Walmsley, I. A., 15 Jan 2013, In: Nature Communications. 4, 1356.

    Research output: Contribution to journalArticlepeer-review

  5. Forthcoming

    Enhancing multiphoton rates with quantum memories

    Nunn, J., Langford, N. K., Kolthammer, W. S., Champion, T. F. M., Sprague, M. R., Michelberger, P. S., Jin, X-M., England, D. G. & Walmsley, I. A., 2013, (Accepted/In press) In: Physical Review Letters. 1208.1534.

    Research output: Contribution to journalArticlepeer-review

  6. 2012
  7. Published

    Multipulse Addressing of a Raman Quantum Memory: Configurable Beam Splitting and Efficient Readout

    Reim, K. F., Nunn, J., Jin, X-M., Michelberger, P. S., Champion, T. F. M., England, D. G., Lee, K. C., Langford, N. K. & Walmsley, I. A., 26 Jun 2012, In: Physical Review Letters. 108, 263602.

    Research output: Contribution to journalArticlepeer-review

  8. Published

    High-Fidelity Polarization Storage in a Gigahertz Bandwidth Quantum Memory

    England, D., Michelberger, P., Champion, T., Reim, K. F., Lee, K. C., Sprague, M. R., Jin, X-M., Langford, N. K., Kolthammer, W. S., Nunn, J. & Walmsley, I. A., 8 Jun 2012, In: Journal of Physics B: Atomic, Molecular and Optical Physics. 45, 6 p., 124008.

    Research output: Contribution to journalArticlepeer-review

  9. Published

    Loophole-free Einstein-Podolsky-Rosen experiment via quantum steering

    Wittmann, B., Ramelow, S., Steinlechner, F., Langford, N. K., Brunner, N., Wiseman, H., Ursin, R. & Zeilinger, A., 24 May 2012, In: New Journal of Physics. 14, 153030.

    Research output: Contribution to journalArticlepeer-review

  10. Published

    Adaptive slit beam shaping for direct laser written waveguides

    Salter, P. S., Jesacher, A., Spring, J. B., Metcalf, B. J., Thomas-Peter, N., Simmonds, R. D., Langford, N. K., Walmsley, I. A. & Booth, M. J., 15 Feb 2012, In: Optics Letters. 37, 4, p. 470-472 3 p.

    Research output: Contribution to journalArticlepeer-review

  11. Published

    Compact Continuous-Variable Entanglement Distillation

    Datta, A., Zhang, L., Nunn, J., Langford, N. K., Feito, A., Plenio, M. B. & Walmsley, I. A., 8 Feb 2012, In: Physical Review Letters. 108, 6, p. - 5 p., 060502.

    Research output: Contribution to journalArticlepeer-review

  12. Published

    Polarization-entanglement-conserving frequency conversion of photons

    Ramelow, S., Fedrizzi, A., Poppe, A., Langford, N. K. & Zeilinger, A., 30 Jan 2012, In: Physical Review A. 85, 1, p. - 5 p., 013845.

    Research output: Contribution to journalArticlepeer-review

  13. Published

    Macroscopic non-classical states and terahertz quantum processing in room-temperature diamond

    Lee, K. C., Sussman, B. J., Sprague, M. R., Michelberger, P., Reim, K. F., Nunn, J., Langford, N. K., Bustard, P. J., Jaksch, D. & Walmsley, I. A., Jan 2012, In: Nature Photonics. 6, 1, p. 41-44 4 p.

    Research output: Contribution to journalArticlepeer-review

  14. 2011
  15. Published

    On-chip, photon-number-resolving, telecommunication-band detectors for scalable photonic information processing

    Gerrits, T., Thomas-Peter, N., Gates, J. C., Lita, A. E., Metcalf, B. J., Calkins, B., Tomlin, N. A., Fox, A. E., Linares, A. L., Spring, J. B., Langford, N. K., Mirin, R. P., Smith, P. G. R., Walmsley, I. A. & Nam, S. W., 5 Dec 2011, In: Physical Review A. 84, 6, p. - 4 p., 060301.

    Research output: Contribution to journalArticlepeer-review

  16. Published

    Entangling Macroscopic Diamonds at Room Temperature

    Lee, K. C., Sprague, M. R., Sussman, B. J., Nunn, J., Langford, N. K., Jin, X. -M., Champion, T., Michelberger, P., Reim, K. F., England, D., Jaksch, D. & Walmsley, I. A., 2 Dec 2011, In: Science. 334, 6060, p. 1253-1256 4 p.

    Research output: Contribution to journalArticlepeer-review

  17. Published

    Efficient quantum computing using coherent photon conversion

    Langford, N. K., Ramelow, S., Prevedel, R., Munro, W. J., Milburn, G. J. & Zeilinger, A., 20 Oct 2011, In: Nature. 478, 7369, p. 360-363 4 p.

    Research output: Contribution to journalArticlepeer-review

  18. Published

    Single-Photon-Level Quantum Memory at Room Temperature

    Reim, K. F., Michelberger, P., Lee, K. C., Nunn, J., Langford, N. K. & Walmsley, I. A., 25 Jul 2011, In: Physical Review Letters. 107, 5, p. - 4 p., 053603.

    Research output: Contribution to journalArticlepeer-review

  19. Published

    Experimental non-classicality of an indivisible quantum system

    Lapkiewicz, R., Li, P., Schaeff, C., Langford, N. K., Ramelow, S., Wiesniak, M. & Zeilinger, A., 23 Jun 2011, In: Nature. 474, 7352, p. 490-493 4 p.

    Research output: Contribution to journalArticlepeer-review

  20. Published

    Integrated photonic sensing

    Thomas-Peter, N., Langford, N. K., Datta, A., Zhang, L., Smith, B. J., Spring, J. B., Metcalf, B. J., Coldenstrodt-Ronge, H. B., Hu, M., Nunn, J. & Walmsley, I. A., 31 May 2011, In: New Journal of Physics. 13, p. - 20 p., 055024.

    Research output: Contribution to journalArticlepeer-review

  21. 2010
  22. Published

    Violation of local realism with freedom of choice

    Scheidl, T., Ursin, R., Kofler, J., Ramelow, S., Ma, X-S., Herbst, T., Ratschbacher, L., Fedrizzi, A., Langford, N. K., Jennewein, T. & Zeilinger, A., 16 Nov 2010, In: Proceedings of the National Academy of Sciences of the United States of America. 107, 46, p. 19708-19713 6 p.

    Research output: Contribution to journalArticlepeer-review

  23. Published

    Quantum memory in an optical lattice

    Nunn, J., Dorner, U., Michelberger, P., Reim, K. F., Lee, K. C., Langford, N. K., Walmsley, I. A. & Jaksch, D., 23 Aug 2010, In: Physical Review A. 82, 2, p. - 6 p., 022327.

    Research output: Contribution to journalArticlepeer-review

  24. Published

    Towards high-speed optical quantum memories

    Reim, K. F., Nunn, J., Lorenz, V. O., Sussman, B. J., Lee, K. C., Langford, N. K., Jaksch, D. & Walmsley, I. A., 7 Apr 2010, In: Nature Photonics. 4, 4, p. 218-221 4 p.

    Research output: Contribution to journalArticlepeer-review

  25. 2009
  26. Published

    Discrete Tunable Color Entanglement

    Ramelow, S., Ratschbacher, L., Fedrizzi, A., Langford, N. K. & Zeilinger, A., 18 Dec 2009, In: Physical Review Letters. 103, 25, p. - 4 p., 253601.

    Research output: Contribution to journalArticlepeer-review

  27. Published

    Experimentally generating and tuning robust entanglement between photonic qubits

    Lanyon, B. P. & Langford, N. K., 7 Jan 2009, In: New Journal of Physics. 11, p. - 9 p., 013008.

    Research output: Contribution to journalArticlepeer-review

  28. 2008
  29. Published

    Choice of measurement sets in qubit tomography

    de Burgh, M. D., Langford, N. K., Doherty, A. C. & Gilchrist, A., Nov 2008, In: Physical Review A. 78, 5, p. - 15 p., 052122.

    Research output: Contribution to journalArticlepeer-review

  30. Published

    Manipulating biphotonic qutrits

    Lanyon, B. P., Weinhold, T. J., Langford, N. K., O'Brien, J. L., Resch, K. J., Gilchrist, A. & White, A. G., 15 Feb 2008, In: Physical Review Letters. 100, 6, p. - 4 p., 060504.

    Research output: Contribution to journalArticlepeer-review

  31. 2007
  32. Published

    Experimental demonstration of a compiled version of Shor's algorithm with quantum entanglement

    Lanyon, B. P., Weinhold, T. J., Langford, N. K., Barbieri, M., James, D. F. V., Gilchrist, A. & White, A. G., 21 Dec 2007, In: Physical Review Letters. 99, 25, p. - 4 p., 250505.

    Research output: Contribution to journalArticlepeer-review

  33. Published

    Entanglement generation by Fock-state filtration

    Resch, K. J., O'Brien, J. L., Weinhold, T. J., Sanaka, K., Lanyon, B. P., Langford, N. K. & White, A. G., 18 May 2007, In: Physical Review Letters. 98, 20, p. - 4 p., 203602.

    Research output: Contribution to journalArticlepeer-review

  34. Published

    Measuring two-qubit gates

    White, A. G., Gilchrist, A., Pryde, G. J., O'Brien, J. L., Bremner, M. J. & Langford, N. K., Feb 2007, In: Journal of the optical society of america b-Optical physics. 24, 2, p. 172-183 12 p.

    Research output: Contribution to journalArticlepeer-review

  35. 2005
  36. Published

    Generation of hyperentangled photon pairs

    Barreiro, J. T., Langford, N. K., Peters, N. A. & Kwiat, P. G., 31 Dec 2005, In: Physical Review Letters. 95, 26, p. - 4 p., 260501.

    Research output: Contribution to journalArticlepeer-review

  37. Published

    Demonstration of a simple entangling optical gate and its use in Bell-state analysis

    Langford, N. K., Weinhold, T. J., Prevedel, R., Resch, K. J., Gilchrist, A., O'Brien, J. L., Pryde, G. J. & White, A. G., 18 Nov 2005, In: Physical Review Letters. 95, 21, p. - 4 p., 210504.

    Research output: Contribution to journalArticlepeer-review

  38. Published

    The practicality of adaptive phase estimation

    Pope, D. T., Berry, D. W. & Langford, N. K., Sep 2005, In: Optics and Spectroscopy. 99, 3, p. 397-403 7 p.

    Research output: Contribution to journalArticlepeer-review

  39. Published

    Distance measures to compare real and ideal quantum processes

    Gilchrist, A., Langford, N. K. & Nielsen, M. A., Jun 2005, In: Physical Review A. 71, 6, p. - 14 p., 062310.

    Research output: Contribution to journalArticlepeer-review

  40. 2004
  41. Published

    Adaptive phase estimation is more accurate than nonadaptive phase estimation for continuous beams of light

    Pope, D. T., Wiseman, H. M. & Langford, N. K., Oct 2004, In: Physical Review A. 70, 4, p. - 13 p., 043812.

    Research output: Contribution to journalArticlepeer-review

  42. Published

    Quantum process tomography of a controlled-NOT gate

    O'Brien, J. L., Pryde, G. J., Gilchrist, A., James, D. F. V., Langford, N. K., Ralph, T. C. & White, A. G., 20 Aug 2004, In: Physical Review Letters. 93, 8, p. - 4 p., 080502.

    Research output: Contribution to journalArticlepeer-review

  43. Published

    Measuring entangled qutrits and their use for quantum bit commitment

    Langford, N. K., Dalton, R. B., Harvey, M. D., O'Brien, J. L., Pryde, G. J., Gilchrist, A., Bartlett, S. D. & White, A. G., 30 Jul 2004, In: Physical Review Letters. 93, 5, p. - 4 p., 053601.

    Research output: Contribution to journalArticlepeer-review

  44. 2002
  45. Published

    Linear optical controlled-NOT gate in the coincidence basis

    Ralph, T. C., Langford, N. K., Bell, T. B. & White, A. G., Jun 2002, In: Physical Review A. 65, 6, p. - 5 p., 062324.

    Research output: Contribution to journalArticlepeer-review