dorsal/arxiv
View SchemaDemonstration of Controllable Temporal Distinguishability in a Three-Photon State
| Authors | B. H. Liu, F. W. Sun, Y. X. Gong, Y. F. Huang, Z. Y. Ou, G. C. Guo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606118 |
| URL | https://arxiv.org/abs/quant-ph/0606118 |
| DOI | 10.1209/0295-5075/77/24003 |
Abstract
Multi-photon interference is at the heart of the recently proposed linear optical quantum computing scheme and plays an essential role in many protocols in quantum information. Indistinguishability is what leads to the effect of quantum interference. Optical interferometers such as Michaelson interferometer provide a measure for second-order coherence at one-photon level and Hong-Ou-Mandel interferometer was widely employed to describe two-photon entanglement and indistinguishability. However, there is not an effective way for a system of more than two photons. Recently, a new interferometric scheme was proposed to quantify the degree of multi-photon distinguishability. Here we report an experiment to implement the scheme for three-photon case. We are able to generate three photons with different degrees of temporal distinguishability and demonstrate how to characterize them by the visibility of three-photon interference. This method of quantitative description of multi-photon indistinguishability will have practical implications in the implementation of quantum information protocols.
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"abstract": "Multi-photon interference is at the heart of the recently proposed linear\noptical quantum computing scheme and plays an essential role in many protocols\nin quantum information. Indistinguishability is what leads to the effect of\nquantum interference. Optical interferometers such as Michaelson interferometer\nprovide a measure for second-order coherence at one-photon level and\nHong-Ou-Mandel interferometer was widely employed to describe two-photon\nentanglement and indistinguishability. However, there is not an effective way\nfor a system of more than two photons. Recently, a new interferometric scheme\nwas proposed to quantify the degree of multi-photon distinguishability. Here we\nreport an experiment to implement the scheme for three-photon case. We are able\nto generate three photons with different degrees of temporal distinguishability\nand demonstrate how to characterize them by the visibility of three-photon\ninterference. This method of quantitative description of multi-photon\nindistinguishability will have practical implications in the implementation of\nquantum information protocols.",
"arxiv_id": "quant-ph/0606118",
"authors": [
"B. H. Liu",
"F. W. Sun",
"Y. X. Gong",
"Y. F. Huang",
"Z. Y. Ou",
"G. C. Guo"
],
"categories": [
"quant-ph"
],
"doi": "10.1209/0295-5075/77/24003",
"title": "Demonstration of Controllable Temporal Distinguishability in a Three-Photon State",
"url": "https://arxiv.org/abs/quant-ph/0606118"
},
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