| DOI | Resolve DOI: https://doi.org/10.1038/s41566-021-00907-7 |
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| Author | Search for: Peng, Peng1ORCID identifier: https://orcid.org/0000-0002-0165-4984; Search for: Mi, Yonghao1ORCID identifier: https://orcid.org/0000-0002-2905-637X; Search for: Lytova, Marianna; Search for: Britton, Mathew; Search for: Ding, Xiaoyan1; Search for: Naumov, A. Yu.1ORCID identifier: https://orcid.org/0000-0002-4593-2560; Search for: Corkum, P. B.1; Search for: Villeneuve, D. M.1ORCID identifier: https://orcid.org/0000-0002-2810-3648 |
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| Affiliation | - National Research Council Canada. Security and Disruptive Technologies
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| Funder | Search for: Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada; Search for: United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Office |
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| Format | Text, Article |
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| Abstract | Ultrafast extreme ultraviolet (XUV) transient absorption is the process by which atoms and molecules absorb light on a timescale faster than the lifetime of the states involved. Coherent control uses quantum coherences to manipulate quantum pathways in light–matter interactions. Here we combine the two. We show that we can control the absorption spectral lineshape, changing it from Lorentzian to Fano to inverted Lorentzian and back again. The control is achieved by creating quantum coherence in the ground electronic state of hydrogen molecules, long before the arrival of the ultrafast XUV pulse. We show that the absorption can become negative at 12 eV, which is the optical gain. These observations provide new insights into the control of spectral lineshapes and open the way for achieving lasing without inversion in the XUV spectral range. |
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| Publication date | 2021-12-13 |
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| Publisher | Nature Research |
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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 | f6c52d73-1d48-4a0f-b298-fe957c75efed |
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| Record created | 2022-05-24 |
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| Record modified | 2022-05-27 |
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