Interaction induced AC-Stark shift of exciton-polaron resonances
arXiv:2306.01778 · doi:10.1103/PhysRevLett.132.056901
Abstract
Laser induced shift of atomic states due to the AC-Stark effect has played a central role in cold-atom physics and facilitated their emergence as analog quantum simulators. Here, we explore this phenomena in an atomically thin layer of semiconductor MoSe, which we embedded in a heterostructure enabling charge tunability. Shining an intense pump laser with a small detuning from the material resonances, we generate a large population of virtual collective excitations, and achieve a regime where interactions with this background population is the leading contribution to the AC-Stark shift. Using this technique we study how itinerant charges modify -- and dramatically enhance -- the interactions between optical excitations. In particular, our experiments show that the interaction between attractive polarons could be more than an order of magnitude stronger than those between bare excitons.
References in corpus (29)
- Excitons in atomically thin transition metal dichalcogenides
- Strong light-matter coupling in two-dimensional atomic crystals
- Optical detection of Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
- Fermi polaron-polaritons in charge-tunable atomically thin semiconductors
- Valley-selective optical Stark effect in monolayer WS2
- Moiré superlattice in a MoSe/hBN/MoSe heterostructure: from coherent coupling of inter- and intra-layer excitons to correlated Mott-like states of electrons
- Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations
- Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
- Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 Monolayers
- Cooperative resonances in light scattering from two-dimensional atomic arrays
- Room temperature Tamm-Plasmon Exciton-Polaritons with a WSe2 monolayer
- Many-Body Theory of Trion Absorption Features in Two-Dimensional Semiconductors
- Atomically thin mirrors made of monolayer semiconductors
- Neutral and Charged Inter-Valley Biexcitons in Monolayer MoSe
- Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides
- Interacting polariton fluids in a monolayer of tungsten disulfide
- Realization of an atomically thin mirror using monolayer MoSe2
- Large, valley-exclusive Bloch-Siegert shift in monolayer WS2
- Exciton-exciton interaction in transition-metal dichalcogenide monolayers
- Interacting Polaron-Polaritons
- Strong interactions between dipolar polaritons
- Shubnikov-de Haas oscillations in optical conductivity of monolayer MoSe
- Observation of intervalley biexcitonic optical Stark effect in monolayer WS2
- Exciton-polaron interactions in monolayer WS
- Quantum Nonlinear Optics in Atomically Thin Materials
- Quantum Dynamics of Attractive and Repulsive Polarons in a Doped MoSe Monolayer
- Atomically thin semiconductors as nonlinear mirrors
- Ultrafast valley-selective coherent optical manipulation with excitons in WSe and MoS monolayers
- Strong photon antibunching in weakly nonlinear two-dimensional exciton-polaritons