| Download | - View final version: Increasing two-photon entangled dimensions by shaping input-beam profiles (PDF, 1.0 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevA.101.052324 |
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| Author | Search for: Liu, ShilongORCID identifier: https://orcid.org/0000-0002-6308-4059; Search for: Zhang, Yingwen1ORCID identifier: https://orcid.org/0000-0002-7227-4452; Search for: Yang, Chen; Search for: Liu, Shikai; Search for: Ge, Zheng; Search for: Li, Yinhai; Search for: Li, Yan; Search for: Zhou, Zhiyuan; Search for: Guo, Guangcan; Search for: Shi, Baosen |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Abstract | Photon pairs entangled in high-dimensional orbital angular momentum (OAM) degrees of freedom (DOF) have been widely regarded as a possible source for improving the capacity of quantum information processing. The generation of a high-dimensional maximally entangled state in the OAM DOF is therefore much desired. In this work, we demonstrate a simple method to generate a broader and flatter OAM spectrum, i.e., a larger spiral bandwidth (SB), of entangled photon pairs generated through spontaneous parametric down-conversion by modifying the pump beam profile. By investigating both experimentally and theoretically, we find that an exponential pump profile that is roughly the inverse of the mode profiles of the single-mode fibers used for OAM detection will provide a much larger SB compared to a Gaussian-shaped pump. |
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| Publication date | 2020-05-15 |
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| Publisher | American Physical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 90699e30-47a4-4a5d-b4dd-d320c953e9ca |
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| Record created | 2020-06-30 |
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| Record modified | 2020-07-23 |
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