Probing a hybrid channel for the dynamics of non-local features
- URL: http://arxiv.org/abs/2301.10925v3
- Date: Wed, 1 Nov 2023 04:50:50 GMT
- Title: Probing a hybrid channel for the dynamics of non-local features
- Authors: Atta ur Rahman, S. M. Zangi, Ma-Cheng Yang, Cong-Feng Qiao
- Abstract summary: We introduce a hybrid channel that encompasses thermal, magnetic, and local components, each simultaneously endowed with characteristics that enhance and diminish quantum correlations.
Our findings reveal that the hybrid channel can be adeptly tailored to preserve quantum correlations, surpassing the capabilities of its individual components.
Notably, various parameters and quantum features, including non-Markovianity, exhibit distinct behaviors in the context of this hybrid channel.
- Score: 0.8363593384698137
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Effective information transmission is a central element in quantum
information protocols, but the quest for optimal efficiency in channels with
symmetrical characteristics remains a prominent challenge in quantum
information science. In light of this challenge, we introduce a hybrid channel
that encompasses thermal, magnetic, and local components, each simultaneously
endowed with characteristics that enhance and diminish quantum correlations. To
investigate the symmetry of this hybrid channel, we explore the quantum
correlations of a simple two-qubit Heisenberg spin state, quantified using
measures such as negativity, $\ell_1$-norm coherence, entropic uncertainty, and
entropy functions. Our findings reveal that the hybrid channel can be adeptly
tailored to preserve quantum correlations, surpassing the capabilities of its
individual components. We also identify optimal parameterizations to attain
maximum entanglement from mixed-entangled/separable states, even in the
presence of local dephasing. Notably, various parameters and quantum features,
including non-Markovianity, exhibit distinct behaviors in the context of this
hybrid channel. Ultimately, we discuss potential experimental applications of
this configuration.
Related papers
- Quantum correlations enhanced in hybrid optomechanical system via phase tuning [0.0]
This work presents a theoretical framework for enhancing quantum correlations in a hybrid double-cavity optomechanical system.
We find that tuning the phase $phi$ is essential for maximizing photon-phonon entanglement.
arXiv Detail & Related papers (2024-10-13T14:11:07Z) - An Exponential Mixing Condition for Quantum Channels [0.0]
We prove that if the Markov-Dobrushin constant of a quantum channel exceeds zero, it exhibits exponential mixing behavior.
We also analyze ergodicity of a class of mixed-unitary channels associated with finite groups of unitary operators.
arXiv Detail & Related papers (2024-07-22T20:18:44Z) - Characterizing randomness in parameterized quantum circuits through expressibility and average entanglement [39.58317527488534]
Quantum Circuits (PQCs) are still not fully understood outside the scope of their principal application.
We analyse the generation of random states in PQCs under restrictions on the qubits connectivities.
We place a connection between how steep is the increase on the uniformity of the distribution of the generated states and the generation of entanglement.
arXiv Detail & Related papers (2024-05-03T17:32:55Z) - Mixed-permutation channel with its application to estimate quantum
coherence [4.171080633895958]
We study a class of special quantum channels named the mixed-permutation channels.
The analytical lower bounds for l1-norm coherence and the relative entropy of coherence are shown.
The extension to bipartite systems is presented for the actions of the mixed-permutation channels.
arXiv Detail & Related papers (2024-01-12T00:12:12Z) - Enhanced Entanglement in the Measurement-Altered Quantum Ising Chain [46.99825956909532]
Local quantum measurements do not simply disentangle degrees of freedom, but may actually strengthen the entanglement in the system.
This paper explores how a finite density of local measurement modifies a given state's entanglement structure.
arXiv Detail & Related papers (2023-10-04T09:51:00Z) - Neural-network quantum states for ultra-cold Fermi gases [49.725105678823915]
This work introduces a novel Pfaffian-Jastrow neural-network quantum state that includes backflow transformation based on message-passing architecture.
We observe the emergence of strong pairing correlations through the opposite-spin pair distribution functions.
Our findings suggest that neural-network quantum states provide a promising strategy for studying ultra-cold Fermi gases.
arXiv Detail & Related papers (2023-05-15T17:46:09Z) - Correlation measures of a quantum state and information characteristics
of a quantum channel [0.0]
We discuss the interconnections between basic correlation measures of a bipartite quantum state and basic information characteristics of a quantum channel.
We describe properties of the (unoptimized and optimized) quantum discord in infinite bipartite systems.
arXiv Detail & Related papers (2023-04-11T17:58:13Z) - Variational waveguide QED simulators [58.720142291102135]
Waveguide QED simulators are made by quantum emitters interacting with one-dimensional photonic band-gap materials.
Here, we demonstrate how these interactions can be a resource to develop more efficient variational quantum algorithms.
arXiv Detail & Related papers (2023-02-03T18:55:08Z) - Characterizing quantum criticality and steered coherence in the XY-Gamma
chain [0.37498611358320727]
We analytically solve the one-dimensional short-range interacting case with the Jordan-Wigner transformation.
In the gapless phase, an incommensurate spiral order is manifested by the vector-chiral correlations.
We derive explicit scaling forms of the excitation gap near the quantum critical points.
arXiv Detail & Related papers (2022-06-08T15:28:10Z) - Tuning long-range fermion-mediated interactions in cold-atom quantum
simulators [68.8204255655161]
Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior.
Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
arXiv Detail & Related papers (2022-03-31T13:32:12Z) - Accessing the topological Mott insulator in cold atom quantum simulators
with realistic Rydberg dressing [58.720142291102135]
We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices.
We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation.
We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
arXiv Detail & Related papers (2022-03-28T14:55:28Z)
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.