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  How to optimize the absorption of two entangled photons

Carnio, E. G., Buchleitner, A., & Schlawin, F. (2021). How to optimize the absorption of two entangled photons. SciPost Physics Core, 4: 028. doi:10.21468/SciPostPhysCore.4.4.028.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-493E-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0009-5DBB-D
Genre: Journal Article

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This work is licensed under the Creative Commons Attribution 4.0 International License. Published by the SciPost Foundation.
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https://arxiv.org/abs/2105.13876 (Preprint)
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 Creators:
Carnio, E. G.1, 2, Author
Buchleitner, A.1, 2, Author
Schlawin, F.3, 4, 5, 6, Author           
Affiliations:
1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, ou_persistent22              
2EUCOR Centre for Quantum Science and Quantum Computing, Albert-Ludwigs-Universität Freiburg, ou_persistent22              
3Clarendon Laboratory, University of Oxford, ou_persistent22              
4The Hamburg Centre for Ultrafast Imaging, ou_persistent22              
5Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938285              
6Universität Hamburg, ou_persistent22              

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 Abstract: We investigate how entanglement can enhance two-photon absorption in a three-level system. First, we employ the Schmidt decomposition to determine the entanglement properties of the optimal two-photon state to drive such a transition, and the maximum enhancement which can be achieved in comparison to the optimal classical pulse. We then adapt the optimization problem to realistic experimental constraints, where photon pairs from a down-conversion source are manipulated by local operations such as spatial light modulators. We derive optimal pulse shaping functions to enhance the absorption efficiency, and compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.

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Language(s): eng - English
 Dates: 2021-06-162021-09-222021-10-15
 Publication Status: Published online
 Pages: -
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 Rev. Type: Peer
 Identifiers: arXiv: 2105.13876
DOI: 10.21468/SciPostPhysCore.4.4.028
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Project name : -
Grant ID : 319286
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)
Project name : F.S. acknowledges support from the Cluster of Excellence "Advanced Imaging of Matter" of the Deutsche Forschungsgemeinschaft (DFG) - EXC 2056 - project ID 390715994.
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Title: SciPost Physics Core
  Abbreviation : SciPost Phys. Core
Source Genre: Journal
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Publ. Info: Amsterdam, The Netherlands : SciPost
Pages: - Volume / Issue: 4 Sequence Number: 028 Start / End Page: - Identifier: ISSN: 2666-9366
CoNE: https://pure.mpg.de/cone/journals/resource/2666-9366