ORCID Profile
0000-0001-8705-0171
Current Organisations
Monash University
,
City University of Hong Kong
,
University of Cambridge
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Degenerate Quantum Gases and Atom Optics | Quantum Physics | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Functional Materials | Condensed Matter Physics | Optical Physics not elsewhere classified | Condensed Matter Physics not elsewhere classified | Nanoelectronics
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Physical Sciences | Commercial Energy Conservation and Efficiency | Management of Greenhouse Gas Emissions from Information and Communication Services |
Related Links
Publications
Elites and Governance in China
Publisher: Routledge
Date: 13-09-2013
Interactions between Fermi polarons in monolayer WS2
Publisher: Springer Science and Business Media LLC
Date: 18-10-2022
DOI: 10.1038/S41467-022-33811-X
Abstract: Interactions between quasiparticles are of fundamental importance and ultimately determine the macroscopic properties of quantum matter. A famous ex le is the phenomenon of superconductivity, which arises from attractive electron-electron interactions that are mediated by phonons or even other more exotic fluctuations in the material. Here we introduce mobile exciton impurities into a two-dimensional electron gas and investigate the interactions between the resulting Fermi polaron quasiparticles. We employ multi-dimensional coherent spectroscopy on monolayer WS 2 , which provides an ideal platform for determining the nature of polaron-polaron interactions due to the underlying trion fine structure and the valley specific optical selection rules. At low electron doping densities, we find that the dominant interactions are between polaron states that are dressed by the same Fermi sea. In the absence of bound polaron pairs (bipolarons), we show using a minimal microscopic model that these interactions originate from a phase-space filling effect, where excitons compete for the same electrons. We furthermore reveal the existence of a bipolaron bound state with remarkably large binding energy, involving excitons in different valleys cooperatively bound to the same electron. Our work lays the foundation for probing and understanding strong electron correlation effects in two-dimensional layered structures such as moiré superlattices.
Microscopic calculation of polariton scattering in semiconductor microcavities
Publisher: American Physical Society (APS)
Date: 06-12-2021
Frustrated orbital Feshbach resonances in a Fermi gas
Publisher: American Physical Society (APS)
Date: 20-02-2020
Trion resonance in polariton-electron scattering
Publisher: American Physical Society (APS)
Date: 13-09-2023
Extremely imbalanced two-dimensional electron-hole-photon systems
Publisher: American Physical Society (APS)
Date: 28-04-2020
Microscopic theory of excitons bound by light
Publisher: American Physical Society (APS)
Date: 23-11-2022
Fate of the Bose polaron at finite temperature
Publisher: American Physical Society (APS)
Date: 21-01-2020
Exact Quantum Virial Expansion for the Optical Response of Doped Two-Dimensional Semiconductors
Publisher: American Physical Society (APS)
Date: 06-09-2023
Observation of quantum depletion in a non-equilibrium exciton–polariton condensate
Publisher: Springer Science and Business Media LLC
Date: 22-01-2020
DOI: 10.1038/S41467-019-14243-6
Abstract: Superfluidity, first discovered in liquid 4 He, is closely related to Bose–Einstein condensation (BEC) phenomenon. However, even at zero temperature, a fraction of the quantum liquid is excited out of the condensate into higher momentum states via interaction-induced fluctuations—the phenomenon of quantum depletion. Quantum depletion of atomic BECs in thermal equilibrium is well understood theoretically but is difficult to measure. This measurement is even more challenging in driven-dissipative exciton–polariton condensates, since their non-equilibrium nature is predicted to suppress quantum depletion. Here, we observe quantum depletion of a high-density exciton–polariton condensate by detecting the spectral branch of elementary excitations populated by this process. Analysis of this excitation branch shows that quantum depletion of exciton–polariton condensates can closely follow or strongly deviate from the equilibrium Bogoliubov theory, depending on the exciton fraction in an exciton polariton. Our results reveal beyond mean-field effects of exciton–polariton interactions and call for a deeper understanding of the relationship between equilibrium and non-equilibrium BECs.
Electron-exciton interactions in the exciton-polaron problem
Publisher: American Physical Society (APS)
Date: 10-02-2021
Signatures of Quantum Chaos in an Out-of-Time-Order Tensor
Publisher: American Physical Society (APS)
Date: 12-04-2022
Bogoliubov excitations of a polariton condensate in dynamical equilibrium with an incoherent reservoir
Publisher: American Physical Society (APS)
Date: 29-06-2022
Repulsive Fermi and Bose Polarons in Quantum Gases
Publisher: MDPI AG
Date: 27-05-2022
Abstract: Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary excitations of a many-particle background. In the field of ultracold atoms, the study of the associated impurity problem has attracted a growing interest over the last fifteen years. Polaron quasiparticle properties are essential to our understanding of a variety of paradigmatic quantum many-body systems realized in ultracold atomic gases and in the solid state, from imbalanced Bose–Fermi and Fermi–Fermi mixtures to fermionic Hubbard models. In this topical review, we focus on the so-called repulsive polaron branch, which emerges as an excited many-body state in systems with underlying attractive interactions such as ultracold atomic mixtures, and is characterized by an effective repulsion between the impurity and the surrounding medium. We give a brief account of the current theoretical and experimental understanding of repulsive polaron properties, for impurities embedded in both fermionic and bosonic media, and we highlight open issues deserving future investigations.
Theory of radio-frequency spectroscopy of impurities in quantum gases
Publisher: American Physical Society (APS)
Date: 05-08-2020
Quasiparticle Lifetime of the Repulsive Fermi Polaron
Publisher: American Physical Society (APS)
Date: 24-09-2020
Quantum Dynamics of Attractive and Repulsive Polarons in a Doped
MoSe
Publisher:
American Physical Society (APS)
Date:
02-03-2023
Publisher: American Physical Society (APS)
Date: 02-03-2023
Polariton interactions in microcavities with atomically thin semiconductor layers
Publisher: American Physical Society (APS)
Date: 04-11-2020
Theory of polariton-electron interactions in semiconductor microcavities
Publisher: American Physical Society (APS)
Date: 10-05-2021
Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
Publisher: American Physical Society (APS)
Date: 06-09-2023
Rydberg exciton-polaritons in a magnetic field
Publisher: American Physical Society (APS)
Date: 08-09-2022
Radio-Frequency Response and Contact of Impurities in a Quantum Gas
Publisher: American Physical Society (APS)
Date: 05-08-2020
Effect of fermion indistinguishability on optical absorption of doped two-dimensional semiconductors
Publisher: American Physical Society (APS)
Date: 07-03-2022
Enhanced Scattering between Electrons and Exciton-Polaritons in a Microcavity
Publisher: American Physical Society (APS)
Date: 10-05-2021
Spectroscopic Signatures of Quantum Many-Body Correlations in Polariton Microcavities
Publisher: American Physical Society (APS)
Date: 26-12-2019
Microscopic description of exciton-polaritons in microcavities
Publisher: American Physical Society (APS)
Date: 21-11-2019
Quantum Behavior of a Heavy Impurity Strongly Coupled to a Bose Gas
Publisher: American Physical Society (APS)
Date: 16-07-2021
Interplay between polarization and quantum correlations of confined polaritons
Publisher: American Physical Society (APS)
Date: 20-07-0007
Thermodynamic signatures of the polaron-molecule transition in a Fermi gas
Publisher: American Physical Society (APS)
Date: 09-02-2021
Erratum: Microscopic description of exciton-polaritons in microcavities [Phys. Rev. Research 1 , 033120 (2019)]
Publisher: American Physical Society (APS)
Date: 16-09-2021
Related Organisations
University Of California, Berkeley
Location: United States of America
University Of Cambridge
Location: United Kingdom of Great Britain and Northern Ireland
Related Funding Activities
Discovery Projects - Grant ID: DP160102739
Start Date: 2016
End Date: 12-2019
Amount: $362,613.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE180100142
Start Date: 2018
End Date: 12-2020
Amount: $727,900.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE170100039
Start Date: 06-2017
End Date: 06-2024
Amount: $33,400,000.00
Funder: Australian Research Council
View Funded ActivityARC Future Fellowships - Grant ID: FT200100619
Start Date: 2021
End Date: 12-2024
Amount: $1,001,328.00
Funder: Australian Research Council
View Funded Activity