Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate
An impurity immersed in a medium constitutes a canonical scenario applicable in a wide range of fields in physics. Though our understanding has advanced significantly in the past decades, quantum impurities in a bosonic environment are still of considerable theoretical and experimental interest. Her...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-03-01
|
| Series: | Atoms |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2218-2004/9/2/22 |
| _version_ | 1797539801001361408 |
|---|---|
| author | Magnus G. Skou Thomas G. Skov Nils B. Jørgensen Jan J. Arlt |
| author_facet | Magnus G. Skou Thomas G. Skov Nils B. Jørgensen Jan J. Arlt |
| author_sort | Magnus G. Skou |
| collection | DOAJ |
| description | An impurity immersed in a medium constitutes a canonical scenario applicable in a wide range of fields in physics. Though our understanding has advanced significantly in the past decades, quantum impurities in a bosonic environment are still of considerable theoretical and experimental interest. Here, we discuss the initial dynamics of such impurities, which was recently observed in interferometric experiments. Experimental observations from weak to unitary interactions are presented and compared to a theoretical description. In particular, the transition between two initial dynamical regimes dominated by two-body interactions is analyzed, yielding transition times in clear agreement with the theoretical prediction. Additionally, the distinct time dependence of the coherence amplitude in these regimes is obtained by extracting its power-law exponents. This benchmarks our understanding and suggests new ways of probing dynamical properties of quantum impurities. |
| first_indexed | 2024-03-10T12:50:03Z |
| format | Article |
| id | doaj.art-25700697e6d148d3857a8d843520a486 |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-03-10T12:50:03Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atoms |
| spelling | doaj.art-25700697e6d148d3857a8d843520a4862023-11-21T13:05:13ZengMDPI AGAtoms2218-20042021-03-01922210.3390/atoms9020022Initial Dynamics of Quantum Impurities in a Bose–Einstein CondensateMagnus G. Skou0Thomas G. Skov1Nils B. Jørgensen2Jan J. Arlt3Center for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus, DenmarkCenter for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus, DenmarkCenter for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus, DenmarkCenter for Complex Quantum Systems, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus, DenmarkAn impurity immersed in a medium constitutes a canonical scenario applicable in a wide range of fields in physics. Though our understanding has advanced significantly in the past decades, quantum impurities in a bosonic environment are still of considerable theoretical and experimental interest. Here, we discuss the initial dynamics of such impurities, which was recently observed in interferometric experiments. Experimental observations from weak to unitary interactions are presented and compared to a theoretical description. In particular, the transition between two initial dynamical regimes dominated by two-body interactions is analyzed, yielding transition times in clear agreement with the theoretical prediction. Additionally, the distinct time dependence of the coherence amplitude in these regimes is obtained by extracting its power-law exponents. This benchmarks our understanding and suggests new ways of probing dynamical properties of quantum impurities.https://www.mdpi.com/2218-2004/9/2/22Bose–Einstein condensatesimpurity dynamicsramsey interferometrypolarons |
| spellingShingle | Magnus G. Skou Thomas G. Skov Nils B. Jørgensen Jan J. Arlt Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate Atoms Bose–Einstein condensates impurity dynamics ramsey interferometry polarons |
| title | Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate |
| title_full | Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate |
| title_fullStr | Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate |
| title_full_unstemmed | Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate |
| title_short | Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate |
| title_sort | initial dynamics of quantum impurities in a bose einstein condensate |
| topic | Bose–Einstein condensates impurity dynamics ramsey interferometry polarons |
| url | https://www.mdpi.com/2218-2004/9/2/22 |
| work_keys_str_mv | AT magnusgskou initialdynamicsofquantumimpuritiesinaboseeinsteincondensate AT thomasgskov initialdynamicsofquantumimpuritiesinaboseeinsteincondensate AT nilsbjørgensen initialdynamicsofquantumimpuritiesinaboseeinsteincondensate AT janjarlt initialdynamicsofquantumimpuritiesinaboseeinsteincondensate |