Experimental probe of multi-mobility edges in quasiperiodic mosaic
lattices
- URL: http://arxiv.org/abs/2306.10829v1
- Date: Mon, 19 Jun 2023 10:21:33 GMT
- Title: Experimental probe of multi-mobility edges in quasiperiodic mosaic
lattices
- Authors: Jun Gao, Ivan M. Khaymovich, Xiao-Wei Wang, Ze-Sheng Xu, Adrian Iovan,
Govind Krishna, Alexander V. Balatsky, Val Zwiller, Ali W. Elshaari
- Abstract summary: The mobility edge (ME) is a crucial concept in understanding localization physics.
Here, we provide experimental evidence to address the possibility of a single system exhibiting multiple MEs.
By single site injection and scanning the disorder level, we could approximately probe the ME of the modulated lattice.
- Score: 56.696552596134936
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The mobility edge (ME) is a crucial concept in understanding localization
physics, marking the critical transition between extended and localized states
in the energy spectrum. Anderson localization scaling theory predicts the
absence of ME in lower dimensional systems. Hence, the search for exact MEs,
particularly for single particles in lower dimensions, has recently garnered
significant interest in both theoretical and experimental studies, resulting in
notable progress. However, several open questions remain, including the
possibility of a single system exhibiting multiple MEs and the continual
existence of extended states, even within the strong disorder domain. Here, we
provide experimental evidence to address these questions by utilizing a
quasiperiodic mosaic lattice with meticulously designed nanophotonic circuits.
Our observations demonstrate the coexistence of extended and localized states
in lattices with broken duality symmetry and varying modulation periods. By
single site injection and scanning the disorder level, we could approximately
probe the ME of the modulated lattice. These results corroborate recent
theoretical predictions, introduce a new avenue for investigating ME physics,
and offer inspiration for further exploration of ME physics in the quantum
regime using hybrid integrated photonic devices.
Related papers
- Time resolved quantum tomography in molecular spectroscopy by the Maximal Entropy Approach [1.7563879056963012]
A fundamental question emerges: what role, if any, do quantum coherences between molecular electron states play in photochemical reactions?
The Maximal Entropy (MaxEnt) based Quantum State Tomography (QST) approach offers unique advantages in studying molecular dynamics.
We present two methodologies for constructing these operators: one leveraging Molecular Angular Distribution Moments (MADMs) which accurately capture the orientation-dependent vibronic dynamics of molecules.
We achieve a groundbreaking milestone by constructing, for the first time, the entanglement entropy of the electronic subsystem: a metric that was previously inaccessible.
arXiv Detail & Related papers (2024-07-23T16:43:01Z) - Manybody Interferometry of Quantum Fluids [0.19528996680336308]
'Manybody Ramsey interferometry' combines adiabatic state preparation and Ramsey spectroscopy.
This work opens new avenues for characterizing manybody states, paving the way for quantum computers to efficiently probe quantum matter.
arXiv Detail & Related papers (2023-09-11T18:01:17Z) - Evolution of many-body systems under ancilla quantum measurements [58.720142291102135]
We study the concept of implementing quantum measurements by coupling a many-body lattice system to an ancillary degree of freedom.
We find evidence of a disentangling-entangling measurement-induced transition as was previously observed in more abstract models.
arXiv Detail & Related papers (2023-03-13T13:06:40Z) - Exact new mobility edges between critical and localized states [5.740412422102932]
disorder systems host three types of fundamental quantum states, known as the extended, localized, and critical states.
We propose a class of exactly solvable models which host a novel type of exact mobility edges (MEs) separating localized states from robust critical states.
This work may pave a way to precisely explore the critical states and new ME physics with experimental feasibility.
arXiv Detail & Related papers (2022-12-29T12:31:19Z) - Response of open two-band systems to a momentum-carrying single-mode
quantized field [3.713896286578935]
We study the response of topological insulator driven by momentum-carrying single-mode field.
We show that from the analytical solution of hall conductance compared with the closed system, there is an extra correction term.
The phase transition point of topological phase is robust to the environment.
arXiv Detail & Related papers (2022-10-18T16:24:49Z) - Sensing of magnetic field effects in radical-pair reactions using a
quantum sensor [50.591267188664666]
Magnetic field effects (MFE) in certain chemical reactions have been well established in the last five decades.
We employ elaborate and realistic models of radical-pairs, considering its coupling to the local spin environment and the sensor.
For two model systems, we derive signals of MFE detectable even in the weak coupling regime between radical-pair and NV quantum sensor.
arXiv Detail & Related papers (2022-09-28T12:56:15Z) - 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) - Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators.
We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure.
The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
arXiv Detail & Related papers (2021-05-27T18:00:02Z) - 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) - Probing eigenstate thermalization in quantum simulators via
fluctuation-dissipation relations [77.34726150561087]
The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems.
Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations.
Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
arXiv Detail & Related papers (2020-07-20T18:00:02Z)
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.