TY - JOUR
T1 - Quantum simulation of an extended Dicke model with a magnetic solid
AU - Marquez Peraca, Nicolas
AU - Li, Xinwei
AU - Moya, Jaime M.
AU - Hayashida, Kenji
AU - Kim, Dasom
AU - Ma, Xiaoxuan
AU - Neubauer, Kelly J.
AU - Fallas Padilla, Diego
AU - Huang, Chien Lung
AU - Dai, Pengcheng
AU - Nevidomskyy, Andriy H.
AU - Pu, Han
AU - Morosan, Emilia
AU - Cao, Shixun
AU - Bamba, Motoaki
AU - Kono, Junichiro
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - The Dicke model describes the cooperative interaction of an ensemble of two-level atoms with a single-mode photonic field and exhibits a quantum phase transition as a function of light–matter coupling strength. Extending this model by incorporating short-range atom–atom interactions makes the problem intractable but is expected to produce new physical phenomena and phases. Here, we simulate such an extended Dicke model using a crystal of ErFeO3, where the role of atoms (photons) is played by Er3+ spins (Fe3+ magnons). Through terahertz spectroscopy and magnetocaloric effect measurements as a function of temperature and magnetic field, we demonstrated the existence of a novel atomically ordered phase in addition to the superradiant and normal phases that are expected from the standard Dicke model. Further, we elucidated the nature of the phase boundaries in the temperature–magnetic-field phase diagram, identifying both first-order and second-order phase transitions. These results lay the foundation for studying multiatomic quantum optics models using well-characterized many-body solid-state systems.
AB - The Dicke model describes the cooperative interaction of an ensemble of two-level atoms with a single-mode photonic field and exhibits a quantum phase transition as a function of light–matter coupling strength. Extending this model by incorporating short-range atom–atom interactions makes the problem intractable but is expected to produce new physical phenomena and phases. Here, we simulate such an extended Dicke model using a crystal of ErFeO3, where the role of atoms (photons) is played by Er3+ spins (Fe3+ magnons). Through terahertz spectroscopy and magnetocaloric effect measurements as a function of temperature and magnetic field, we demonstrated the existence of a novel atomically ordered phase in addition to the superradiant and normal phases that are expected from the standard Dicke model. Further, we elucidated the nature of the phase boundaries in the temperature–magnetic-field phase diagram, identifying both first-order and second-order phase transitions. These results lay the foundation for studying multiatomic quantum optics models using well-characterized many-body solid-state systems.
UR - http://www.scopus.com/inward/record.url?scp=85188352001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85188352001&partnerID=8YFLogxK
U2 - 10.1038/s43246-024-00479-3
DO - 10.1038/s43246-024-00479-3
M3 - Article
AN - SCOPUS:85188352001
SN - 2662-4443
VL - 5
JO - Communications Materials
JF - Communications Materials
IS - 1
M1 - 42
ER -