2008/07/25 by M. Hendrych, Martin Hendrych, X. Shi +5
Computer Science · Engineering · Physics and Astronomy · #Mechanical and Optical Resonators #Photonic and Optical Devices #Quantum Information and Cryptography #quant-ph
paper · pdf · doi:10.1103/physreva.79.023817
4 pages
arxiv created 2008/07/25 · openalex publication_date 2009/02/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate a technique that allows full control of the bandwidth of entangled photons independently of the frequency band of interest and of the nonlinear crystal. We theoretically show that this technique allows generating nearly transform-limited biphotons with almost one octave of bandwidth (hundreds of terahertz) which corresponds to correlation times of just a few femtoseconds. The presented method becomes an enabling tool for attosecond entangled-photons quantum optics. The technique can also be used to generate paired photons with a very high degree of entanglement.