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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 5 — May. 1, 2014
  • pp: 1192–1201

Generation of picosecond pulsed coherent state superpositions

Ruifang Dong, Anders Tipsmark, Amine Laghaout, Leonid A. Krivitsky, Miroslav Ježek, and Ulrik Lund Andersen  »View Author Affiliations


JOSA B, Vol. 31, Issue 5, pp. 1192-1201 (2014)
http://dx.doi.org/10.1364/JOSAB.31.001192


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Abstract

We present the generation of approximated coherent state superpositions—referred to as Schrödinger 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.

© 2014 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics
(270.6570) Quantum optics : Squeezed states
(320.5390) Ultrafast optics : Picosecond phenomena
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: January 7, 2014
Revised Manuscript: March 1, 2014
Manuscript Accepted: March 28, 2014
Published: April 28, 2014

Citation
Ruifang Dong, Anders Tipsmark, Amine Laghaout, Leonid A. Krivitsky, Miroslav Ježek, and Ulrik Lund Andersen, "Generation of picosecond pulsed coherent state superpositions," J. Opt. Soc. Am. B 31, 1192-1201 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-5-1192


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