Error-free discrimination between two non-orthogonal states

R. Clarke, E. Riis, S.M. Barnett, J. Jeffers, A. Chefles

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


A free-space interferometer constructed from four polarizing beam splitters is examined. Two non-orthogonal linear polarizations of heavily attenuated pulses of mode-locked laser light formed the states to discriminated. On the average, there are 0.1 photons per pulse, ensuring that the probability of two photons in the system at any one time was 1 in 200. The recombined light emerging from the interferometer is analyzed using a half-waveplate and a polarizing beam splitter.

Original languageEnglish
Title of host publication2000 International Quantum Electronics Conference
Place of PublicationPiscataway, NJ
Number of pages1
ISBN (Print)0780363183
Publication statusPublished - 1 Jan 2000
Event2000 International Quantum Electronics Conference (IQEC 2000) - Nice, France
Duration: 10 Sept 200015 Sept 2000


Conference2000 International Quantum Electronics Conference (IQEC 2000)
CityNice, France


  • free-space interferometer
  • non-orthogonal linear polarizations
  • polarizing beam splitter


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