Collective optical properties of moiré excitons

• URL: http://arxiv.org/abs/2407.19611v1
• Date: Sun, 28 Jul 2024 23:43:46 GMT
• Title: Collective optical properties of moiré excitons
• Authors: Tsung-Sheng Huang, Yu-Xin Wang, Yan-Qi Wang, Darrick Chang, Mohammad Hafezi, Andrey Grankin,
• Abstract summary: We show that excitons in moir'e transition metal dichalcogenide bilayers offer a promising platform for investigating collective radiative properties. We illustrate that the Wigner crystal states of electrons doped into these bilayers act as an emergent periodic potential for excitons.
• Score: 16.70008024600165
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose that excitons in moir\'e transition metal dichalcogenide bilayers offer a promising platform for investigating collective radiative properties. While some of these optical properties resemble those of cold atom arrays, moir\'e excitons extend to the deep subwavelength limit, beyond the reach of current optical lattice experiments. Remarkably, we show that the collective optical properties can be exploited to probe certain correlated electron states. Specifically, we illustrate that the Wigner crystal states of electrons doped into these bilayers act as an emergent periodic potential for excitons. Moreover, the collective dissipative excitonic bands and their associated Berry curvature can reveal various charge orders that emerge at the corresponding electronic doping. Our study provides a promising pathway for future research on the interplay between collective effects and strong correlations involving moir\'e excitons.

Related papers

• Superradiance of strongly interacting dipolar excitons in moiré quantum materials [0.08192907805418582]
  We study the cooperative radiance of moir'e excitons that is demonstrated to emerge from the deep subwavelength nature of the moir'e lattice. Our results show that interlayer moir'e excitons offer a unique platform for exploring cooperative optical phenomena in strongly interacting many-body systems.
  arXiv  Detail & Related papers  (2024-10-11T15:08:58Z)
• Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
  Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
  arXiv  Detail & Related papers  (2023-12-04T15:35:41Z)
• Super- and subradiant dynamics of quantum emitters mediated by atomic matter waves [0.0]
  We explore cooperative dynamics of quantum emitters in an optical lattice that interact by radiating atomic matter waves. We demonstrate directional super- and subradiance from a superfluid phase with tunable radiative phase lags. We observe a coupling to collective bound states with radiation trapped at and between the emitters.
  arXiv  Detail & Related papers  (2023-11-16T00:37:06Z)
• Bosonic Delocalization of Dipolar Moir\'e Excitons [0.0]
  tunable moir'e potentials emerge, trapping excitons into periodic arrays. Recent experiments have demonstrated density-dependent transport properties of moir'e excitons. We develop a microscopic theory of interacting excitons in external potentials.
  arXiv  Detail & Related papers  (2023-06-01T09:06:33Z)
• Probing and harnessing photonic Fermi arc surface states using light-matter interactions [62.997667081978825]
  We show how to image the Fermi arcs by studying the spontaneous decay of one or many emitters coupled to the system's border. We demonstrate that the Fermi arc surface states can act as a robust quantum link.
  arXiv  Detail & Related papers  (2022-10-17T13:17:55Z)
• Optical-cavity mode squeezing by free electrons [0.0]
  We show that the ponderomotive contribution to the electron-cavity interaction can actually create a more general set of optical states. Our work introduces a disruptive approach to the creation of nontrivial quantum cavity states for quantum information and optics applications.
  arXiv  Detail & Related papers  (2022-06-24T10:57:43Z)
• Effect of Emitters on Quantum State Transfer in Coupled Cavity Arrays [48.06402199083057]
  We study the effects of atoms in cavities which can absorb and emit photons as they propagate down the array. Our model is equivalent to previously examined spin chains in the one-excitation sector and in the absence of emitters.
  arXiv  Detail & Related papers  (2021-12-10T18:52:07Z)
• Engineering the Radiative Dynamics of Thermalized Excitons with Metal Interfaces [58.720142291102135]
  We analyze the emission properties of excitons in TMDCs near planar metal interfaces. We find suppression or enhancement of emission relative to the point dipole case by several orders of magnitude. nanoscale optical cavities are a viable pathway to generating long-lifetime exciton states in TMDCs.
  arXiv  Detail & Related papers  (2021-10-11T19:40:24Z)
• Photon-mediated interactions near a Dirac photonic crystal slab [68.8204255655161]
  We develop a theory of dipole radiation near photonic Dirac points in realistic structures. We find positions where the nature of the collective interactions change from being coherent to dissipative ones. Our results significantly improve the knowledge of Dirac light-matter interfaces.
  arXiv  Detail & Related papers  (2021-07-01T14:21:49Z)
• Exciton-polarons in two-dimensional semiconductors and the Tavis-Cummings model [0.0]
  We use an analogy to the Tavis-Cummings model of quantum optics to show that an exciton-polaron can be understood as a hybrid quasiparticle. We anticipate our results to help explain the striking differences between absorption and emission spectra of two-dimensional semiconductors.
  arXiv  Detail & Related papers  (2020-06-29T12:06:35Z)
• Condensation signatures of photogenerated interlayer excitons in a van der Waals heterostack [46.1292414445895]
  Atomistic van der Waals heterostacks are ideal systems for high-temperature exciton condensation. Our study provides a first phase-diagram of many-body interlayer exciton states including Bose Einstein condensation.
  arXiv  Detail & Related papers  (2020-01-21T14:29:43Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.