Atom-Induced Field Squeezing Predicted by Magnus Expanding the Jaynes-Cummings Model for a Two-Level Atom
- URL: http://arxiv.org/abs/2508.03506v2
- Date: Wed, 06 Aug 2025 12:28:21 GMT
- Title: Atom-Induced Field Squeezing Predicted by Magnus Expanding the Jaynes-Cummings Model for a Two-Level Atom
- Authors: Phoenix M. M. Paing,
- Abstract summary: We find the term involving the squeezing of light beyond the Rotating Wave Approximation.<n>These findings suggest new avenues for engineering nonclassical states in simple light-matter systems.
- Score: 0.0
- License: http://creativecommons.org/publicdomain/zero/1.0/
- Abstract: By performing up to the second-order Magnus expansion on the Jaynes-Cummings Model Hamiltonian governing the interaction of a two-level atom and a single cavity mode electromagnetic field, we find the term involving the squeezing of light beyond the Rotating Wave Approximation. Our results demonstrate that the Magnus expansion provides a systematic framework to capture atom-induced squeezing effects. These findings suggest new avenues for engineering nonclassical states in simple light-matter systems without requiring multi-level structures or strong nonlinear media.
Related papers
- Enhancing collective spin squeezing via one-axis twisting echo control of individual atoms [5.289304400372572]
Existing schemes that harness internal atomic degrees of freedom to boost squeezing typically encode the collective squeezing in complex superpositions of magnetic sublevels.<n>Here, we propose a coherent control scheme that simultaneously enhances collective spin squeezing and maps the resulting atom-atom entanglement onto two well-defined magnetic sublevels.<n>Our results offer a straightforward and efficient strategy for generating highly entangled yet readily accessible quantum states in multilevel atomic systems.
arXiv Detail & Related papers (2026-02-15T07:54:09Z) - A pedagogical derivation of the first-order effective Hamiltonian for the two-mode Jaynes-Cummings model [51.56484100374058]
This work presents a derivation of the first-order effective Hamiltonian for the two-mode Jaynes-Cummings model in the dispersive regime.<n>A perturbative unitary transformation removes nonresonant atom-field terms, revealing dispersive frequency shifts.<n>The resulting Hamiltonian is diagonalized through a simple geometric rotation in the two-mode bosonic space.
arXiv Detail & Related papers (2026-01-23T22:35:15Z) - Cavity QED beyond the Jaynes-Cummings model [0.0]
We take a more dynamical approach to the modelling of atom-cavity systems.<n>Our approach shows that the decay rate Gamma_cav of an emitter inside a subwavelength cavity with metallic mirrors can be much larger than its free space decay rate Gamma_free.
arXiv Detail & Related papers (2025-10-18T20:19:23Z) - Multi-Photon Quantum Rabi Models with Center-of-Mass Motion [45.73541813564926]
We introduce a rigorous, second-quantized framework for describing multi-$Lambda$-atoms in a cavity.<n>A key feature of our approach is the systematic application of a Hamiltonian averaging theory to the atomic field operators.<n>A significant finding is the emergence of a particle-particle interaction mediated by ancillary states.
arXiv Detail & Related papers (2025-07-07T09:50:48Z) - Harnessing Chiral Spin States in Molecular Nanomagnets for Quantum Technologies [44.1973928137492]
We show that chiral qubits naturally suppress always-on interactions that can not be switched off in weakly coupled qubits.<n>Our findings establish spin chirality engineering as a promising strategy for mitigating always-on interaction in entangling two chiral qubits in molecular quantum technologies.
arXiv Detail & Related papers (2025-01-21T08:23:12Z) - Cavity Control of Topological Qubits: Fusion Rule, Anyon Braiding and Majorana-Schrödinger Cat States [39.58317527488534]
We investigate the impact of introducing a local cavity within the center of a topological chain.
This cavity induces a scissor-like effect that bisects the chain, liberating Majorana zero modes (MZMs) within the bulk.
By leveraging the symmetry properties of fermion modes within a two-site cavity, we propose a novel method for generating MZM-polariton Schr"odinger cat states.
arXiv Detail & Related papers (2024-09-06T18:00:00Z) - Two-mode Squeezing in Floquet Engineered Power-law Interacting Spin Models [0.0]
We find scalable generation of entanglement in the form of two-mode squeezing between the layers can generically be achieved in powerlaw models.
spatially-temporally engineered interactions allow to significantly increase the generated entanglement and in fact achieve Heisenberg limited scaling.
arXiv Detail & Related papers (2024-02-28T19:00:06Z) - Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping.
A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
arXiv Detail & Related papers (2023-12-19T16:14:01Z) - A high-flux source system for matter-wave interferometry exploiting
tunable interactions [33.92525320044496]
Atom interferometers allow determining inertial effects to high accuracy.
Here we report on a high-flux source of ultra-cold atoms with free expansion rates near the Heisenberg limit directly upon release from the trap.
arXiv Detail & Related papers (2023-07-13T14:10:53Z) - Bound state of distant photons in waveguide quantum electrodynamics [137.6408511310322]
Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics.
We predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box.
Such states could be realized in the waveguide quantum electrodynamics platform.
arXiv Detail & Related papers (2023-03-17T09:27:02Z) - Dilute neutron star matter from neural-network quantum states [58.720142291102135]
Low-density neutron matter is characterized by the formation of Cooper pairs and the onset of superfluidity.
We model this density regime by capitalizing on the expressivity of the hidden-nucleon neural-network quantum states combined with variational Monte Carlo and reconfiguration techniques.
arXiv Detail & Related papers (2022-12-08T17:55:25Z) - Quantum Simulation of Light-Front QCD for Jet Quenching in Nuclear
Environments [0.0]
We develop a framework to simulate jet quenching in nuclear environments on a quantum computer.
We apply this framework to study a toy model and gluon in-medium radiation on a small lattice.
arXiv Detail & Related papers (2022-05-16T18:00:02Z) - 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) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - Generation and distribution of atomic entanglement in coupled-cavity
arrays [0.0]
We study the dynamics of entanglement in a 1D coupled-cavity array, each cavity containing a two-level atom, via the Jaynes-Cummings-Hubbard (JCH) Hamiltonian in the single-excitation sector.
Our work offers a comprehensive account over the machinery of the single-excitation JCH Hamiltonian as well as contributes to the design of hybrid light-matter quantum networks.
arXiv Detail & Related papers (2020-05-30T15:11:12Z)
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.