Directly observing replica symmetry breaking in a vector quantum-optical spin glass

• URL: http://arxiv.org/abs/2311.04216v2
• Date: Wed, 20 Nov 2024 18:51:57 GMT
• Title: Directly observing replica symmetry breaking in a vector quantum-optical spin glass
• Authors: Ronen M. Kroeze, Brendan P. Marsh, David Atri Schuller, Henry S. Hunt, Alexander N. Bourzutschky, Michael Winer, Sarang Gopalakrishnan, Jonathan Keeling, Benjamin L. Lev,
• Abstract summary: We show the ability of an active quantum gas microscope to realize a spin glass of a novel driven-dissipative and vector form. Ultrametricity is known to be emergent in models of evolution, protein folding, climate change, and infinite-range equilibrium spin glasses.
• Score: 33.7054351451505
• License:
• Abstract: Spin glasses are quintessential examples of complex matter. Although much about their order remains uncertain, abstract models of them inform, e.g., the classification of combinatorial optimization problems, the magnetic ordering in metals with impurities, and artificial intelligence -- where they form a mathematical basis for neural network computing and brain modeling. We demonstrate the ability of an active quantum gas microscope to realize a spin glass of a novel driven-dissipative and vector form. By microscopically visualizing its glassy spin states, the technique allows us to directly measure replica symmetry breaking and the resulting ultrametric hierarchical structure. Ultrametricity is known to be emergent in models of evolution, protein folding, climate change, and infinite-range equilibrium spin glasses; this work shows it to be directly observable in a physically realized system.

Related papers

• Magnifying the Wave Function of Interacting Fermionic Atoms [4.790438196495298]
  We present a matterwave magnification scheme, based on evolutions in optical potentials, tailored to magnify the wave function of atoms. To showcase this method, we image atoms in the strongly interacting regime, establishing a new way to characterize correlated systems.
  arXiv  Detail & Related papers  (2024-09-27T17:57:40Z)
• Finding the Dynamics of an Integrable Quantum Many-Body System via Machine Learning [0.0]
  We study the dynamics of the Gaudin magnet ("central-spin model") using machine-learning methods. Motivated in part by this intuition, we use a neural-network representation for each variational eigenstate of the model Hamiltonian. Having an efficient description of this susceptibility opens the door to improved characterization and quantum control procedures for qubits interacting with an environment of quantum two-level systems.
  arXiv  Detail & Related papers  (2023-07-06T21:49:01Z)
• A Quantum-Classical Model of Brain Dynamics [62.997667081978825]
  Mixed Weyl symbol is used to describe brain processes at the microscopic level. Electromagnetic fields and phonon modes involved in the processes are treated either classically or semi-classically. Zero-point quantum effects can be incorporated into numerical simulations by controlling the temperature of each field mode.
  arXiv  Detail & Related papers  (2023-01-17T15:16:21Z)
• Fast electrons interacting with chiral matter: mirror symmetry breaking of quantum decoherence and lateral momentum transfer [91.3755431537592]
  We show that matter chirality breaks mirror symmetry of scattered electrons quantum decoherence. We also prove that mirror asymmetry also shows up in the distribution of the electron lateral momentum.
  arXiv  Detail & Related papers  (2022-04-07T15:06:27Z)
• Direct observation of a dynamical glass transition in a nanomagnetic artificial Hopfield network [0.0]
  We present the experimental realization of an artificial spin glass consisting of dipolar coupled single-domain Ising-type nanomagnets arranged onto an interaction network. Specifically, the temperature dependence of the spin glass correlation function follows a power law trend predicted from theoretical models on two-dimensional spin glasses.
  arXiv  Detail & Related papers  (2022-02-04T20:18:27Z)
• Programmable Interactions and Emergent Geometry in an Atomic Array [0.0]
  Nonlocal interactions govern the flow of information and the formation of correlations in quantum systems. We report on the realization of programmable nonlocal interactions in an array of atomic ensembles within an optical cavity. Our work opens broader prospects for simulating frustrated magnets and topological phases, investigating quantum optimization algorithms, and engineering new entangled resource states for sensing and computation.
  arXiv  Detail & Related papers  (2021-06-08T03:00:49Z)
• 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)
• 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)
• Optically addressable molecular spins for quantum information processing [0.0]
  In molecular systems, optically addressing ground-state spins would enable a wide range of applications in quantum information science. Here, we demonstrate such optical addressability in a series of synthesized organometallic, chromium(IV) molecules. These compounds display a ground-state spin that can be scalable and read out using light, and coherently manipulated with microwaves.
  arXiv  Detail & Related papers  (2020-04-16T23:49:44Z)
• Entropic Uncertainty Relations and the Quantum-to-Classical transition [77.34726150561087]
  We aim to shed some light on the quantum-to-classical transition as seen through the analysis of uncertainty relations. We employ entropic uncertainty relations to show that it is only by the inclusion of imprecision in our model of macroscopic measurements that we can prepare a system with two simultaneously well-defined quantities.
  arXiv  Detail & Related papers  (2020-03-04T14:01:17Z)

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.