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artwork giving an impression of bitstrings, light and quantum
Credit: I believe this widely-used image is public domain; it was obtained by download in 2015; source unknown

Prof Andrew Steane

Professor of Physics

Research theme

  • Quantum information and computation

Sub department

  • Atomic and Laser Physics

Research groups

  • Ion trap quantum computing
Andrew.Steane@physics.ox.ac.uk
Telephone: 01865 (2)72346,01865 (2)72385
Clarendon Laboratory, room 316.2
  • About
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Proposed solution of the quantum measurement problem

Journal of Physics A General Physics 23:13 (1990) 2905-2913

Abstract:

A discussion of quantum measurement theory is presented. It is argued that the quantum measurement problem consists in the failure of any formalism based on unitary evolution to describe fully the observed behaviour in measurement-like processes. It is shown that the problem is essentially concerned with the phase of the coherence between orthogonal eigenstates of an object/measuring device system. It is then proposed that the observed behaviour is fully described if the value of this phase is formally undecidable.

Multiphoton laser cooling

Nature Springer Nature 347:6289 (1990) 127-128

Authors:

Andrew Steane, Christopher Foot

Laser-cooled atoms cooperate

Nature Springer Nature 344:6266 (1990) 490-491

Authors:

Christopher Foot, Andrew Steane

DIFFRACTION CALCULATIONS IN THE NEAR-FIELD AND THE VALIDITY OF THE FRESNEL APPROXIMATION

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION 6:12 (1989) 1809-1814

Authors:

AM STEANE, HN RUTT

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