Generation of picosecond pulsed coherent state superpositions

Ruifang Dong, Anders Tipsmark, Amine Laghaout, Leonid Krivitsky, Miroslav Jezek, Ulrik Lund Andersen

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We present the generation of approximated coherent state superpositions-referred to as Schrodinger cat states-by the process of subtracting single photons from picosecond pulsed squeezed states of light. The squeezed vacuum states are produced by spontaneous parametric down-conversion (SPDC) in a periodically poled KTiOPO4 crystal while the single photons are probabilistically subtracted using a beamsplitter and a single photon detector. The resulting states are fully characterized with time-resolved homodyne quantum state tomography. Varying the pump power of the SPDC, we generated different states which exhibit non-Gaussian behavior. (C) 2014 Optical Society of America
Original languageEnglish
JournalOptical Society of America. Journal B: Optical Physics
Issue number5
Pages (from-to)1192-1201
Number of pages10
Publication statusPublished - 2014

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© 2014 Optical Society of America


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