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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Heralded, pure-state single-photon source based on a Potassium Titanyl Phosphate waveguide.
1Optical Technology Division, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 8441, Gaithersburg, MD 20899-8441, USA. z.levine@nist.gov
Optics Express
|April 15, 2010
Summary
We demonstrate a Potassium Titanyl Phosphate (KTP) waveguide for generating pure-state photon pairs. This source is efficient and heralded, ideal for quantum applications.
Area of Science:
- Quantum optics
- Photonics
Background:
- Spontaneous parametric down-conversion (SPDC) is a key process for generating quantum light.
- Type II SPDC in nonlinear crystals produces photon pairs with specific correlations.
Purpose of the Study:
- To analyze the generation of single spatial mode, spectrally uncorrelated photon pairs.
- To evaluate a Potassium Titanyl Phosphate (KTP) waveguide as a heralded, pure-state single-photon source.
Main Methods:
- Utilizing real experimental parameters for analysis.
- Investigating type II spontaneous parametric down-conversion (SPDC).
- Employing a Potassium Titanyl Phosphate (KTP) waveguide.
Main Results:
- Achieved generation of single spatial mode, spectrally uncorrelated photon pairs.
- Demonstrated the KTP waveguide as an efficient source.
- Showcased the heralded nature of the generated single photons.
Conclusions:
- The KTP waveguide is a viable platform for efficient heralded single-photon generation.
- The source produces pure-state photons suitable for quantum information processing.
- Real experimental parameters confirm the source's practical applicability.
