dorsal/arxiv
View SchemaGeneration of Pulsed Polarization Entangled Two-Photon State via Temporal and Spectral Engineering
| Authors | Yoon-Ho Kim, Warren P. Grice |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0207047 |
| URL | https://arxiv.org/abs/quant-ph/0207047 |
| DOI | 10.1080/0950034021000011455 |
| Journal | J. Mod. Opt. Vol.49, 2309 (2002) |
Abstract
The quantum state of the photon pair generated from type-II spontaneous parametric down-conversion pumped by a 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 polarization-entangled states with novel spectral characteristics: the frequency-correlated state and the frequency-uncorrelated state.
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"abstract": "The quantum state of the photon pair generated from type-II spontaneous\nparametric down-conversion pumped by a ultrafast laser pulse exhibits strong\ndecoherence in its polarization entanglement, an effect which can be attributed\nto the clock effect of the pump pulse or, equivalently, to distinguishing\nspectral information in the two-photon state. Here, we propose novel temporal\nand spectral engineering techniques to eliminate these detrimental decoherence\neffects. The temporal engineering of the two-photon wavefunction results in a\nuniversal Bell-state synthesizer that is independent of the choice of pump\nsource, crystal parameters, wavelengths of the interacting photons, and the\nbandwidth of the spectral filter. In the spectral engineering technique, the\ndistinguishing spectral features of the two-photon state are eliminated through\nmodifications to the two-photon source. In addition, spectral engineering also\nprovides a means for the generation of polarization-entangled states with novel\nspectral characteristics: the frequency-correlated state and the\nfrequency-uncorrelated state.",
"arxiv_id": "quant-ph/0207047",
"authors": [
"Yoon-Ho Kim",
"Warren P. Grice"
],
"categories": [
"quant-ph"
],
"doi": "10.1080/0950034021000011455",
"journal_ref": "J. Mod. Opt. Vol.49, 2309 (2002)",
"title": "Generation of Pulsed Polarization Entangled Two-Photon State via Temporal and Spectral Engineering",
"url": "https://arxiv.org/abs/quant-ph/0207047"
},
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