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Generation of pulsed polarization-entangled two-photon state via temporal and spectral engineering.
- Source :
-
Journal of Modern Optics . 11/20/2002, Vol. 49 Issue 14/15, p2309-2323. 15p. - Publication Year :
- 2002
-
Abstract
- The quantum state of the photon pair generated from type-II spontaneous parametric downconversion pumped by an ultrafast laser pulse exhibits strong decoherence in its polarization entanglement, an effect which can be attributed to the clock effect of the pump pulse or, equivalently, to distinguishing spectral information in the two-photon state. Here, we propose novel temporal and spectral engineering techniques to eliminate these detrimental decoherence effects. The temporal engineering of the two-photon wavefunction results in a universal Bell-state synthesizer that is independent of the choice of pump source, crystal parameters, wavelengths of the interacting photons and the bandwidth of the spectral filter. In the spectral engineering technique, the distinguishing spectral features of the two-photon state are eliminated through modifications to the two-photon source. In addition, spectral engineering also provides a means for the generation of polarizationentangled states with novel spectral characteristics: the frequency-correlated state and the frequency-uncorrelated state. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOTONS
*OPTICAL polarization
*COHERENCE (Optics)
Subjects
Details
- Language :
- English
- ISSN :
- 09500340
- Volume :
- 49
- Issue :
- 14/15
- Database :
- Academic Search Index
- Journal :
- Journal of Modern Optics
- Publication Type :
- Academic Journal
- Accession number :
- 9019366
- Full Text :
- https://doi.org/10.1080/0950034021000011455