Halide perovskite artificial solids as a new platform to simulate
collective phenomena in doped Mott insulators
- URL: http://arxiv.org/abs/2303.08791v1
- Date: Wed, 15 Mar 2023 17:38:51 GMT
- Title: Halide perovskite artificial solids as a new platform to simulate
collective phenomena in doped Mott insulators
- Authors: Alessandra Milloch, Umberto Filippi, Paolo Franceschini, Michele
Galvani, Selene Mor, Stefania Pagliara, Gabriele Ferrini, Francesco Banfi,
Massimo Capone, Dmitry Baranov, Liberato Manna, and Claudio Giannetti
- Abstract summary: We introduce artificial lattices made of lead halide perovskite nanocubes as a new platform to simulate and investigate the physics of correlated quantum materials.
We show that, at large photo-doping, the exciton gas undergoes an excitonic Mott transition, which fully realizes the magnetic-field-driven insulator-to-metal transition described by the Hubbard model.
Our results demonstrate that time-resolved experiments span a parameter region of the Hubbard model in which long-range and phase-coherent orders emerge out of a doped Mott insulating phase.
- Score: 43.55994393060723
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: The development of Quantum Simulators, artificial platforms where the
predictions of many-body theories of correlated quantum materials can be tested
in a controllable and tunable way, is one of the main challenges of condensed
matter physics. Here we introduce artificial lattices made of lead halide
perovskite nanocubes as a new platform to simulate and investigate the physics
of correlated quantum materials. The ultrafast optical injection of quantum
confined excitons plays the role of doping in real materials. We show that, at
large photo-doping, the exciton gas undergoes an excitonic Mott transition,
which fully realizes the magnetic-field-driven insulator-to-metal transition
described by the Hubbard model. At lower photo-doping, the long-range
interactions drive the formation of a collective superradiant state, in which
the phases of the excitons generated in each single perovskite nanocube are
coherently locked. Our results demonstrate that time-resolved experiments span
a parameter region of the Hubbard model in which long-range and phase-coherent
orders emerge out of a doped Mott insulating phase. This physics is relevant
for a broad class of phenomena, such as superconductivity and charge-density
waves in correlated materials whose properties are captured by doped Hubbard
models.
Related papers
- A dissipation-induced superradiant transition in a strontium cavity-QED system [0.0]
In cavity quantum electrodynamics (QED), emitters and a resonator are coupled together to enable precise studies of quantum light-matter interactions.
Here we provide an observation of the continuous superradiant phase transition predicted in the CRF model using an ensemble of ultracold $88$Sr atoms.
Our observations are a first step towards finer control of driven-dissipative systems, which have been predicted to generate quantum states.
arXiv Detail & Related papers (2024-08-20T18:00:00Z) - Local control and mixed dimensions: Exploring high-temperature superconductivity in optical lattices [0.8453109131640921]
Local control and optical bilayer capabilities combined with spatially resolved measurements create a versatile toolbox.
We show how coherent pairing correlations can be accessed in a partially particle-hole transformed and rotated basis.
Finally, we introduce a scheme to measure momentum-resolved dopant densities, providing access to observables complementary to solid-state experiments.
arXiv Detail & Related papers (2024-06-04T17:59:45Z) - Fragmented superconductivity in the Hubbard model as solitons in
Ginzburg-Landau theory [58.720142291102135]
Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials.
We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model.
We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
arXiv Detail & Related papers (2023-07-21T18:00:07Z) - Higher-order topological Peierls insulator in a two-dimensional
atom-cavity system [58.720142291102135]
We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state.
The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states.
Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
arXiv Detail & Related papers (2023-05-05T10:25:14Z) - Tuning long-range fermion-mediated interactions in cold-atom quantum
simulators [68.8204255655161]
Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior.
Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
arXiv Detail & Related papers (2022-03-31T13:32:12Z) - Accessing the topological Mott insulator in cold atom quantum simulators
with realistic Rydberg dressing [58.720142291102135]
We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices.
We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation.
We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
arXiv Detail & Related papers (2022-03-28T14:55:28Z) - Exploration of doped quantum magnets with ultracold atoms [0.0]
We review the results achieved in cold atom realizations of the Fermi-Hubbard model in recent years.
We propose a new direction for cold atoms to explore: namely mixed-dimensional bilayer systems.
arXiv Detail & Related papers (2021-07-16T17:59:59Z) - Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics [0.0]
We review the recent developments and the current status in the field of quantum-gas cavity QED.
Composite quantum-gas--cavity systems offer the opportunity to implement, simulate, and experimentally test fundamental solid-state Hamiltonians.
arXiv Detail & Related papers (2021-02-08T19:00:03Z) - Spin Entanglement and Magnetic Competition via Long-range Interactions
in Spinor Quantum Optical Lattices [62.997667081978825]
We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter.
We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios.
These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
arXiv Detail & Related papers (2020-11-16T08:03:44Z) - Entanglement and classical correlations at the doping-driven Mott
transition in the two-dimensional Hubbard model [0.0]
We study the doped Hubbard model in two dimensions from the perspective of quantum information theory.
We find that upon varying doping these two entanglement-related properties detect the Mott insulating phase, the strongly correlated pseudogap phase, and the metallic phase.
arXiv Detail & Related papers (2020-07-01T15:48:48Z)
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.