Effects of intrinsic decoherence in multipartite system subjected to Kerr effect and parametric amplification with quantum correlations and estimation
- URL: http://arxiv.org/abs/2509.03073v1
- Date: Wed, 03 Sep 2025 07:11:49 GMT
- Title: Effects of intrinsic decoherence in multipartite system subjected to Kerr effect and parametric amplification with quantum correlations and estimation
- Abstract summary: We investigate the interplay between quantum correlations, quantified by the global quantum discord and quantum Fisher information in a multi two-level system interacting with a single mode Fock field.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We investigate the interplay between quantum correlations, quantified by the global quantum discord and quantum Fisher information in a multi two-level system interacting with a single mode Fock field. Our model incorporates Kerr like non linearity effects, parametric amplification and intrinsic decoherence.
Related papers
- Nonlinear Dynamics of Coherent Parametric Amplification in Multipartite two-level System under Intrinsic Decoherence [1.2894104422808244]
We study the dynamics of global quantum discord and quantum Fisher information in a multipartite system of two-level atoms.<n>The results show that, without intrinsic decoherence, both quantities exhibit rapid oscillations with clear collapse and revival behavior.
arXiv Detail & Related papers (2026-06-24T14:07:58Z) - Quantum fluctuations and chaos in fully connected spin models [84.0552206158625]
We investigate beyond-mean-field dynamics in a fully connected $mathrmSU(3)$ spin-exchange model.<n>Using the two-particle irreducible (2PI) effective action formalism, we derive equations of motion that account for higher-order correlations generated by interactions.<n>Our results show that an accurate treatment of fluctuations is essential for describing macroscopic dynamics in quantum many-body systems.
arXiv Detail & Related papers (2026-05-26T15:53:43Z) - Dephasing Effects on the Dynamical Evolution of Quantum Correlations and Coherence in Neutrino Oscillations [0.08795040582681389]
We analyze quantum steering, logarithmic negativity, and quantum coherence within a two-flavor framework.<n>Treating neutrino oscillations as an effective two-level quantum system, we study the influence of environmental decoherence on these nonclassical features.
arXiv Detail & Related papers (2026-05-06T15:13:27Z) - Analytical determination of multi-time correlation functions in quantum chaotic systems [0.0]
We analytically derive the time dependence of multi-point observable correlation functions in quantum systems.<n>We compare the predicted dynamics to exact numerical experiments in a spin chain for various physical observables.
arXiv Detail & Related papers (2025-10-24T16:49:11Z) - Dynamics of atom-field interaction inside a nonlinear Kerr-like medium filled optical cavity [1.2974520793373163]
We investigate the dynamics of two two-level atoms interacting with a two-mode field inside an optical cavity.<n>We derive the exact analytical solution of the time-dependent Schr"odinger equation.<n>We quantify the atom-atom entanglement using linear entropy.
arXiv Detail & Related papers (2025-03-21T05:45:51Z) - Dynamics of Quantum Coherence and Non-Classical Correlations in Open Quantum System Coupled to a Squeezed Thermal Bath [0.0]
We investigate the dynamics of quantum coherence and non-classical correlations in a two-qubit open quantum system coupled to a squeezed thermal reservoir.<n>Our findings demonstrate that non-classical correlations such as quantum consonance, quantum discord, local quantum uncertainty, and quantum Fisher information are highly sensitive to the collective regime.<n>This work bridges theoretical advancements with real-world applications, offering a comprehensive framework for leveraging quantum resources under the influence of environmental decoherence.
arXiv Detail & Related papers (2024-12-19T14:46:09Z) - Precision bounds for multiple currents in open quantum systems [37.69303106863453]
We derivation quantum TURs and KURs for multiple observables in open quantum systems undergoing Markovian dynamics.<n>Our bounds are tighter than previously derived quantum TURs and KURs for single observables.<n>We also find an intriguing quantum signature of correlations captured by the off-diagonal element of the Fisher information matrix.
arXiv Detail & Related papers (2024-11-13T23:38:24Z) - Decoherence effects on local quantum Fisher information and quantum coherence in a spin-1/2 Ising-XYZ chain [0.0]
This research explores the effects of decoherence on local quantum Fisher information and quantum coherence dynamics in a spin-1/2 Ising-XYZ chain model with independent reservoirs at zero temperature.
arXiv Detail & Related papers (2024-06-14T15:51:02Z) - Dipolar quantum solids emerging in a Hubbard quantum simulator [45.82143101967126]
Long-range and anisotropic interactions promote rich spatial structure in quantum mechanical many-body systems.
We show that novel strongly correlated quantum phases can be realized using long-range dipolar interaction in optical lattices.
This work opens the door to quantum simulations of a wide range of lattice models with long-range and anisotropic interactions.
arXiv Detail & Related papers (2023-06-01T16:49:20Z) - Geometric quantum discord and coherence in a dipolar interacting
magnetic system [0.0]
This work explores the effect of the quantum-level crossing, induced by the magnetic anisotropies of dipolar interacting systems, on the quantum discord and coherence of the system.
The results show that, while the quantum discord has a clear signature of the quantum level-crossing, the basis dependence of the quantum coherence hides the crossover regarding the measured basis.
arXiv Detail & Related papers (2023-01-07T16:45:17Z) - Trapped-Ion Quantum Simulation of Collective Neutrino Oscillations [55.41644538483948]
We study strategies to simulate the coherent collective oscillations of a system of N neutrinos in the two-flavor approximation using quantum computation.
We find that the gate complexity using second order Trotter- Suzuki formulae scales better with system size than with other decomposition methods such as Quantum Signal Processing.
arXiv Detail & Related papers (2022-07-07T09:39:40Z) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - Pure Dephasing of Light-Matter Systems in the Ultrastrong and
Deep-Strong Coupling Regimes [0.21108097398435333]
Pure dephasing originates from the non-dissipative information exchange between quantum systems and environments.
Here we investigate how pure dephasing of one of the components of a hybrid quantum system affects the dephasing rate of the system transitions.
arXiv Detail & Related papers (2022-05-11T08:57:15Z) - Enhancing nonclassical bosonic correlations in a Quantum Walk network
through experimental control of disorder [50.591267188664666]
We experimentally realize a controllable inhomogenous Quantum Walk dynamics.
We observe two photon states which exhibit an enhancement in the quantum correlations between two modes of the network.
arXiv Detail & Related papers (2021-02-09T10:57:00Z) - Continuous and time-discrete non-Markovian system-reservoir
interactions: Dissipative coherent quantum feedback in Liouville space [62.997667081978825]
We investigate a quantum system simultaneously exposed to two structured reservoirs.
We employ a numerically exact quasi-2D tensor network combining both diagonal and off-diagonal system-reservoir interactions with a twofold memory for continuous and discrete retardation effects.
As a possible example, we study the non-Markovian interplay between discrete photonic feedback and structured acoustic phononovian modes, resulting in emerging inter-reservoir correlations and long-living population trapping within an initially-excited two-level system.
arXiv Detail & Related papers (2020-11-10T12:38:35Z) - Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states.
Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
arXiv Detail & Related papers (2020-07-23T19:05:56Z)
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.