Andreas Walther

Senior Lecturer

Research areas and keywords


  • Quantum information, Quantum optics, Rare-earth ions, Micro cavities, Quantum computing


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. 

Recent research outputs

Ying Yan, Yichao Li, Adam Kinos, Andreas Walther, Chunyan Shi, Lars Rippe, Joel Moser, Stefan Kröll & Xi Chen, 2019 Mar 18, In : Optics Express. 27, 6, p. 8267-8282 16 p.

Research output: Contribution to journalArticle

Alexander Bengtsson, David Hill, Meng Li, Mengqiao Di, Magnus Cinthio, Tobias Erlöv, Stefan Andersson-Engels, Nina Reistad, Andreas Walther, Lars Rippe & Stefan Kröll, 2019, In : Biomedical Optics Express. 10, 11, p. 5565-5584 20 p.

Research output: Contribution to journalArticle

Jacqueline Gunther, Andreas Walther, Lars Rippe, Stefan Kröll & Stefan Andersson-Engels, 2018 Jul 1, In : Journal of Biomedical Optics. 23, 7, 071209.

Research output: Contribution to journalArticle

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