Cavity QED with degenerate atomic levels and polarization-degenerate field mode
- URL: http://arxiv.org/abs/2503.17706v2
- Date: Fri, 28 Mar 2025 18:01:15 GMT
- Title: Cavity QED with degenerate atomic levels and polarization-degenerate field mode
- Authors: V. A. Reshetov,
- Abstract summary: The polarization properties of the photon emitted into the cavity by an excited atom are studied with an account of relaxation processes for arbitrary angular momenta of atomic levels.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: The Jaynes-Cummings model with degenerate atomic levels and polarization-degenerate field mode is considered. The general expression for the system evolution operator is derived. The analytical expressions for such operators in the case of low values ($J \leq 3/2$) of atomic angular momentum are obtained. The polarization properties of the photon emitted into the cavity by an excited atom are studied with an account of relaxation processes for arbitrary angular momenta of atomic levels.
Related papers
- Quantum optical scattering by macroscopic lossy objects: A general approach [55.2480439325792]
We develop a general approach to describe the scattering of quantum light by a lossy macroscopic object placed in vacuum.<n>We exploit the input-output relation to connect the output state of the field to the input one.<n>We analyze the impact of the classical transmission and absorption dyadics on the transitions from ingoing to outgoing s-polariton.
arXiv Detail & Related papers (2024-11-27T17:44:29Z) - Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system.
Our findings open a new way to engineer dissipation-induced entanglement.
arXiv Detail & Related papers (2024-11-11T08:39:32Z) - Dressed atom revisited: Hamiltonian-independent treatment of the radiative cascade [0.0]
We show how the general features of the steady-state radiative cascade are affected by the interaction of the dressed atom with propagating radiation modes.
Our findings clarify the general conditions in which a description of the radiative cascade in terms of transition between dressed states is self-consistent.
arXiv Detail & Related papers (2024-09-14T14:46:27Z) - Intrinsic high-fidelity spin polarization of charged vacancies in hexagonal boron nitride [2.702226162822497]
negatively charged boron vacancy ($mathrmV_mathrmB-$) in hexagonal boron nitride (hBN) has garnered significant attention among defects in two-dimensional materials.
We develop a semiclassical model that predicts a near-unity degree of spin polarization, surpassing other solid-state spin defects under ambient conditions.
arXiv Detail & Related papers (2024-06-17T18:00:00Z) - Vacuum polarization correction to atomic energy levels in the path
integral formalism [0.17404865362620806]
We apply quantum electrodynamics in a framework which treats the strong binding nuclear field to all orders.
Expressions for the vacuum polarization shift of binding energies are obtained from the poles of the spectral function up to second order.
arXiv Detail & Related papers (2023-09-24T19:56:45Z) - 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) - The Adiabatic Wigner-Weisskopf Model [0.0]
We consider a slowly varying time dependent d-level atom interacting with a photon field.
We analyze the dynamics of the atom and of the radiation field in the adiabatic and small coupling approximations.
arXiv Detail & Related papers (2022-10-27T19:10:01Z) - Motion induced excitation and electromagnetic radiation from an atom
facing a thin mirror [62.997667081978825]
We evaluate the probability of (de-)excitation and photon emission from a neutral, moving, non-relativistic atom, coupled to a quantum electromagnetic field and in the presence of a thin, perfectly conducting plane ("mirror")
Results extend to a more realistic model, where the would-be electron was described by a scalar variable, coupled to an (also scalar) vacuum field.
arXiv Detail & Related papers (2022-07-06T20:54:59Z) - Tunable directional emission and collective dissipation with quantum
metasurfaces [62.997667081978825]
Subradiant excitations propagate through the atomic array with very long lifetimes.
We demonstrate that one can harness these excitations to obtain tunable directional emission patterns.
We also benchmark how these directional emission patterns translate into collective, anisotropic dissipative couplings.
arXiv Detail & Related papers (2021-07-01T14:26:33Z) - Radiation pressure on single atoms: generalization of an exact
analytical approach to multilevel atoms [0.0]
We provide a standardized and exact analytical formalism for computing in the semiclassical regime the radiation force experienced by a two-level atom.
Here, we extend this treatment to the multilevel atom case, where degeneracy of the atomic levels is considered and polarization of light enters into play.
arXiv Detail & Related papers (2021-05-18T14:38:32Z) - Deterministic single-atom source of quasi-superradiant $N$-photon pulses [62.997667081978825]
Scheme operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting.
This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.
arXiv Detail & Related papers (2020-12-01T03:55:27Z) - Generalized excitation of atomic multipole transitions by twisted light
modes [0.0]
We present the explicit dependence of excitation rates on critical parameters.
The expressions for transition rates obtained in this work can be used for any atom of arbitrary electronic configuration.
Our results are suitable for the analysis and planning of future experiments on the excitation of electric-dipole-forbidden transitions by twisted light modes in optical atomic clocks.
arXiv Detail & Related papers (2020-03-06T18:43:30Z)
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.