Generation of two-photon states with arbitrary degree of entanglement via nonlinear crystal superlattices
We demonstrate a general method of engineering the joint quantum state of photon pairs produced in spontaneous parametric downconversion (PDC). The method makes use of a superlattice structure of nonlinear and linear materials, in conjunction with a broadband pump, to manipulate the group delays of...
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| Veröffentlicht in: | arXiv.org 2006-11 |
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| creator | U'Ren, Alfred B Erdmann, Reinhard K de la Cruz-Gutierrez, Manuel Walmsley, Ian A |
| description | We demonstrate a general method of engineering the joint quantum state of photon pairs produced in spontaneous parametric downconversion (PDC). The method makes use of a superlattice structure of nonlinear and linear materials, in conjunction with a broadband pump, to manipulate the group delays of the signal and idler photons relative to the pump pulse, and realizes a joint spectral amplitude with arbitrary degree of entanglement for the generated pairs. This method of group delay engineering has the potential of synthesizing a broad range of states including factorizable states crucial for quantum networking and states optimized for Hong-Ou-Mandel interferometry. Experimental results for the latter case are presented, illustrating the principles of this approach. |
| doi_str_mv | 10.48550/arxiv.0611018 |
| format | Article |
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| subjects | Broadband Entanglement Group delay Photons Superlattices |
| title | Generation of two-photon states with arbitrary degree of entanglement via nonlinear crystal superlattices |
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