Personal profile
Research
Andreas research focus is on experimental quantum information and quantum optics, using rare-earth-ion-doped crystals. In order to realize the long-term goal of building a quantum computer, he is working towards demonstrating the benefits of the long-lived rare-earth ion states for storing and processing quantum information. At present, the main challenge is to enable detection and interaction with single rare-earth ions inside a solid host. To make them visible, he leads the work on using micro-sized optical cavities to selectively enhance the spontaneous emission from the ions, using the Purcell effect, to enable higher fluorescence.
Free keywords
- Quantum information
- Quantum optics
- Rare-earth ions
- Micro cavities
- Quantum computing
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Collaborations the last five years
Research output
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Quantum networks using rare-earth ions
Tittel, W., Afzelius, M., Kinos, A., Rippe, L. & Walther, A., 2025 Oct 1, In: Quantum Science and Technology. 10, 3, 033002.Research output: Contribution to journal › Review article › peer-review
Open Access -
Complete analysis of a realistic fiber-based quantum repeater scheme
Kinos, A., Walther, A., Kröll, S. & Rippe, L., 2025 Jul, In: Physical Review Research. 7, 3, 033199.Research output: Contribution to journal › Article › peer-review
Open Access -
Micro-cavity length stabilization for fluorescence enhancement using schemes based on higher-order spatial modes
Abdelatief, A. S., Renders, A. J., Alqedra, M. K., Hansen, J. J., Hunger, D., Rippe, L. & Walther, A., 2025 Apr, In: Review of Scientific Instruments. 96, 4, 043704.Research output: Contribution to journal › Article › peer-review
Open Access -
Using slow light to enable laser frequency stabilization to a short, high-Q cavity
Gustavsson, D., Lindén, M., Shortiss, K., Kröll, S., Walther, A., Kinos, A. & Rippe, L., 2025 Jan 27, In: Optics Express. 33, 2, p. 2866-2877 12 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Stark control of solid-state quantum memory with spin-wave storage
Alqedra, M. K., Horvath, S. P., Kinos, A., Walther, A., Kröll, S. & Rippe, L., 2024 Jan, In: Physical Review A. 109, 1, 10 p., 012607.Research output: Contribution to journal › Article › peer-review
Open Access
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Searching for new physics using atoms in crystals
Walther, A. (PI)
2026/01/01 → 2030/12/31
Project: Research
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PhD Project
Lundblad, E. (Researcher), Rippe, L. (Supervisor), Walther, A. (Assistant supervisor) & Kinos, A. (Assistant supervisor)
The Royal Physiographic Society in Lund
2025/02/24 → …
Project: Dissertation
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Kvantdator baserad på kombinationer av olika jordartsjoner
Walther, A. (PI)
2023/03/16 → 2027/12/31
Project: Research
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Combining multiple rare-earth ion species into a single quantum computer
Walther, A. (PI)
2022/01/01 → 2026/12/31
Project: Research
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Investigation of rare-earth ion doped crystals for quantum technology
Abu Yahia, M. (Researcher), Kinos, A. (Supervisor), Walther, A. (Assistant supervisor) & Rippe, L. (Assistant supervisor)
Project: Dissertation
Activities
- 1 Organisation of conference
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Q-SMaC
Leijnse, M. (Host), Darakchieva, V. (Role not specified), Nordberg, A. (Role not specified), Pullerits, T. (Role not specified), Maisi, V. (Role not specified), Burke, A. (Role not specified), Thelander, C. (Role not specified), Walther, A. (Role not specified), Reimann-Wacker, S. M. (Role not specified), Wang, Q. (Role not specified), Adya, V. (Role not specified), Eder, H. (Role not specified), Wieczorek, W. (Role not specified), Molignini, P. (Role not specified), Frisk Kockum, A. (Role not specified), Splettstösser, J. (Role not specified), Krelina, M. (Role not specified), Johansson, L. (Role not specified), Lundqvist, D. (Role not specified), Gao, F. (Role not specified), Xavier, G. (Role not specified), Zelan, M. (Role not specified), Abrikosov, I. (Role not specified), Kubatkin, S. (Role not specified), Höijer, M. (Role not specified), Bauer, S. (Role not specified), Jonsson, P. (Role not specified), Sjögren, A. (Role not specified), Monsel, J. (Role not specified), Nguyen, S. (Role not specified) & Blanchard, A. (Role not specified)
2025 Nov 26 → 2025 Nov 27Activity: Participating in or organising an event › Organisation of conference
Infrastructure
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Quantum Information Laboratories
Rippe, L. (Manager), Walther, A. (Manager), Kinos, A. (Manager) & Eng-Johnsson, P. (Contact)
Atomic PhysicsInfrastructure