Zeeman polaritons as a platform for probing Dicke physics in condensed matter

• URL: http://arxiv.org/abs/2409.17339v1
• Date: Wed, 25 Sep 2024 20:28:01 GMT
• Title: Zeeman polaritons as a platform for probing Dicke physics in condensed matter
• Authors: T. Elijah Kritzell, Jacques Doumani, Tobias Asano, Sota Yamada, Fuyang Tay, Hongjing Xu, Han Yan, Ikufumi Katayama, Jun Takeda, Andriy Nevidomskyy, Hiroyuki Nojiri, Motoaki Bamba, Andrey Baydin, Junichiro Kono,
• Abstract summary: We show that a spin--boson system is more compatible with the Dicke model and has advantages over boson--boson systems for pursuing experimental realizations of phenomena predicted for ultrastrongly coupled light--matter hybrids. This finding demonstrates that a spin--boson system is more compatible with the Dicke model and has advantages over boson--boson systems for pursuing experimental realizations of phenomena predicted for ultrastrongly coupled light--matter hybrids.
• Score: 2.523996579776851
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The interaction of an ensemble of two-level atoms and a quantized electromagnetic field, described by the Dicke Hamiltonian, is an extensively studied problem in quantum optics. However, experimental efforts to explore similar physics in condensed matter typically employ bosonic matter modes (e.g., phonons, magnons, and plasmons) that are describable as simple harmonic oscillators, i.e., an infinite ladder of equally spaced energy levels. Here, we examine ultrastrong coupling between a coherent light mode and an ensemble of paramagnetic spins, a finite-multilevel system, in Gd$_3$Ga$_5$O$_{12}$. The electron paramagnetic resonance of Gd$^{3+}$ ions is tuned by a magnetic field into resonance with a Fabry--P\'erot cavity mode, resulting in the formation of spin--photon hybrid states, or Zeeman polaritons. We observe that the light--matter coupling strength, measured through the vacuum Rabi splitting, decreases with increasing temperature, which can be explained by the temperature-dependent population difference between the lower and higher-energy states, a trait of a finite-level system. This finding demonstrates that a spin--boson system is more compatible with the Dicke model and has advantages over boson--boson systems for pursuing experimental realizations of phenomena predicted for ultrastrongly coupled light--matter hybrids.

Related papers

• Cavity-induced switching between Bell-state textures in a quantum dot [0.0]
  We show how a simple theoretical model of this interplay at resonance predicts complex but measurable effects. New polariton states emerge that combine spin, relative modes, and radiation. We uncover novel topological effects involving highly correlated spin and charge density.
  arXiv  Detail & Related papers  (2023-08-17T01:31:36Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• Quantum vibrational mode in a cavity confining a massless spinor field [91.3755431537592]
  We analyse the reaction of a massless (1+1)-dimensional spinor field to the harmonic motion of one cavity wall. We demonstrate that the system is able to convert bosons into fermion pairs at the lowest perturbative order.
  arXiv  Detail & Related papers  (2022-09-12T08:21:12Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Generalization of the Tavis-Cummings model for multi-level anharmonic systems: insights on the second excitation manifold [0.0]
  This work contrasts predictions from the Tavis-Cummings (TC) model, in which the material is a collection of two-level systems. We simplify the brute-force diagonalization of a gigantic $N2times N2$ Hamiltonian. We find resonant conditions between bipolaritons and anharmonic transitions where two-photon absorption can be enhanced.
  arXiv  Detail & Related papers  (2022-02-03T06:33:42Z)
• Multi-band Bose-Einstein condensate at four-particle scattering resonance [47.187609203210705]
  We show that magnon quantization for thin samples results in a new multi-band magnon condensate. The most stable multi-band condensate is found in a narrow regime favoured on account of a resonance in the scattering between two bands.
  arXiv  Detail & Related papers  (2022-01-26T16:32:58Z)
• 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)
• Vectorial polaritons in the quantum motion of a levitated nanosphere [0.0]
  We show the generation of phonon-polaritons in the quantum motion of an optically-levitated nanosphere. Our results pave the way to novel protocols for quantum information transfer between photonic and phononic components.
  arXiv  Detail & Related papers  (2020-12-30T18:26:28Z)
• 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)
• Fano resonances induced by the topological magnetoelectric effect [0.0]
  We investigate the interaction between a topological insulator nanosphere made of TlBiSe$$ interacting with a CdSe quantum dot. We find the emergence of Fano resonances which are direct manifestations of the $mathbbZ_2$ invariant of topological insulators.
  arXiv  Detail & Related papers  (2020-09-30T15:08:11Z)
• The Shape of the Electric Dipole Function Determines the Sub-Picosecond Dynamics of Anharmonic Vibrational Polaritons [0.0]
  We describe for the first time the essential role of permanent dipole moments in the femtosecond dynamics of vibrational polariton wavepackets. We propose a non-adiabatic state preparation scheme to generate vibrational polaritons using nanoscale infrared antennas and UV-vis photochemistry or electron tunneling.
  arXiv  Detail & Related papers  (2020-03-17T15:55:09Z)

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.