Unraveling Dicke Superradiant Decay with Separable Coherent Spin States
We show that idealized Dicke superradiant decay from a fully inverted state can at all times be described by a positive statistical mixture of coherent spin states (CSS). Since CSS are separable, this implies that no entanglement is involved in Dicke decay. Based on this result, we introduce a new numerical quantum trajectory approach leading to low-entanglement unravelings. This opens up new possibilities for employing matrix product state (MPS) techniques for large-scale numerical simulations with collective decay processes.
Authors
- Luiz O. R. Solak (ORCID: https://orcid.org/0000-0002-4760-3357)
- A. Cidrim (ORCID: https://orcid.org/0000-0003-0007-2330)
- Johannes Schachenmayer (ORCID: https://orcid.org/0000-0001-9420-5768)
- Romain Bachelard (ORCID: https://orcid.org/0000-0002-6026-509X)
- Pedro Rosário (ORCID: https://orcid.org/0000-0002-7628-7373)
Institutions
- Universidade Federal de São Carlos (BR)
- Institute for Science and International Security (US)
- Université de Strasbourg (FR)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-09-23
- DOI
- https://doi.org/10.1103/xcxr-sm9c
- Citations
- 3
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 7.44