Distribution of a bipartite entanglement in a mixed spin-(1/2,1) Heisenberg tetramer

• URL: http://arxiv.org/abs/2311.17464v1
• Date: Wed, 29 Nov 2023 09:10:07 GMT
• Title: Distribution of a bipartite entanglement in a mixed spin-(1/2,1) Heisenberg tetramer
• Authors: Hana Vargov\'a and Jozef Stre\v{c}ka
• Abstract summary: The distribution of bipartite entanglement in a mixed spin-(1/2,1) Heisenberg tetramer is investigated. Four different negativities measuring a strength of bipartite entanglement are analyzed.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The distribution of bipartite entanglement in a mixed spin-(1/2,1) Heisenberg tetramer composed from two spin-1/2 and two spin-1 entities is investigated in detail in presence of an external magnetic field. Four different negativities measuring a strength of bipartite entanglement are analyzed at zero and non-zero temperatures. Derived rigorous analytic results and respective numerical results are discussed with the particular emphasis laid on the significance of a strength of the pair spin-spin interactions and spin diversity in the entanglement description. Based on both aforementioned driving forces the regions of parametric space, where the bipartite entanglement can exist solely for one type of spin pair or all four spin pairs, were identified.

Related papers

• Entanglement of the Ising-Heisenberg diamond spin-1/2 cluster in evolution [0.0]
  We consider the evolution of entanglement in the diamond spin-1/2 cluster. The influence of the interaction coupling with side spins on the entanglement of central spins is investigated. We find conditions for achieving the maximal values of entanglement.
  arXiv  Detail & Related papers  (2023-03-28T13:14:25Z)
• Spin-phonon decoherence in solid-state paramagnetic defects from first principles [79.4957965474334]
  Paramagnetic defects in diamond and hexagonal boron nitride possess a unique combination of spin and optical properties that make them solid-state qubits. Despite the coherence of these spin qubits being critically limited by spin-phonon relaxation, a full understanding of this process is not yet available. We demonstrate that low-frequency two-phonon modulations of the zero-field splitting are responsible for spin relaxation and decoherence.
  arXiv  Detail & Related papers  (2022-12-22T13:48:05Z)
• Probing dynamics of a two-dimensional dipolar spin ensemble using single qubit sensor [62.997667081978825]
  We experimentally investigate individual spin dynamics in a two-dimensional ensemble of electron spins on the surface of a diamond crystal. We show that this anomalously slow relaxation rate is due to the presence of strong dynamical disorder. Our work paves the way towards microscopic study and control of quantum thermalization in strongly interacting disordered spin ensembles.
  arXiv  Detail & Related papers  (2022-07-21T18:00:17Z)
• Spin-spin coupling-based quantum and classical phase transitions in two-impurity spin-boson models [55.41644538483948]
  Two-interacting-impurity spin-boson models with vanishing transverse fields on the spin-pair are studied. The dynamics of the magnetization is analysed for different levels of (an)isotropy.
  arXiv  Detail & Related papers  (2022-05-19T08:01:03Z)
• Measurable fractional spin for quantum Hall quasiparticles on the disk [0.0]
  We study the spin of the localised quasiparticles of lowest-Landau-level quantum Hall states defined on a disk. Since it is related to the quadrupole moment of the quasiparticle charge distribution, it can be measured in an experiment.
  arXiv  Detail & Related papers  (2021-12-06T09:53:54Z)
• Spin-1/2 particles under the influence of a uniform magnetic field in the interior Schwarzschild solution [62.997667081978825]
  relativistic wave equation for spin-1/2 particles in the interior Schwarzschild solution in the presence of a uniform magnetic field is obtained. Results are relevant to the physics of the interior of neutron stars, where both the gravitational and the magnetic fields are very intense.
  arXiv  Detail & Related papers  (2021-11-30T14:46:00Z)
• Exact solution of the minimalist Stark many body localization problem in terms of spin pair hopping [91.3755431537592]
  Eigenstates of the latter problem are separated into four groups including two groups of delocalized states with translationally invariant unrestricted (group I) or restricted (group II) Krylov subspaces and other two with confined spin transport having either all mobile (group III) or some immobile spins (group IV)
  arXiv  Detail & Related papers  (2021-10-18T01:23:45Z)
• Bound state dynamics in the long-range spin-$\frac{1}{2}$ XXZ model [0.0]
  We study the effects of such non-local couplings in the long-range spin-$1/2$ XXZ Heisenberg Hamiltonian. For fast decay of the spin-spin couplings, we find that the two-spin energy spectrum is characterized by well-defined discrete values. On the other hand, two-spin bound states enable the dynamical stabilization of effective antiferromagnetic states.
  arXiv  Detail & Related papers  (2021-10-05T00:33:50Z)
• Spin squeezing from bilinear spin-spin interactions: two simple theorems [0.0]
  We demonstrate two simple theorems about squeezing induced by bilinear spin-spin interactions. We show that squeezing captures the first form of quantum correlations.
  arXiv  Detail & Related papers  (2021-06-14T14:36:02Z)
• Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
  Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
  arXiv  Detail & Related papers  (2021-05-16T06:15:00Z)
• Insights into nature of magnetization plateaus of a nickel complex [Ni4(CO3)2(aetpy)8](ClO4)4 from a spin-1 Heisenberg diamond cluster [0.0]
  Magnetic and magnetocaloric properties of a spin-1 Heisenberg diamond cluster are investigated. Spin-1 Heisenberg diamond cluster exhibits several intriguing quantum ground states. Spin-1 Heisenberg diamond cluster may also exhibit an enhanced magnetocaloric effect.
  arXiv  Detail & Related papers  (2020-10-06T07:22:11Z)

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.