Spotlighting quantum phase transition in spin -1/2 Ising–Heisenberg diamond chain employing Measurement-Induced Nonlocality

Bhuvaneswari, S.; Muthuganesan, R.; Radha, R.

doi:10.1016/j.physa.2021.125932

Cited by 7 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low-temperature magnetization data of another 3d-4f heterobimetallic coordination polymer [Dy (hfac) 2 (CH 3 OH) 2 Cu(dmg)(Hdmg) 2 ] n (H 2 dmg = dimethylglyoxime; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) have been successfully interpreted within the spin-1/2 Ising-Heisenberg orthogonaldimer chain [16,17]. It is worthwhile to remark that several other exactly solved Ising-Heisenberg spin chains have provided unbiased descriptions of various intriguing quantum phenomena including quantized magnetization plateaus [18,19], enhanced magnetocaloric effect [19,20], partition function zeros [21], quantum teleportation [22], unconventional "fire-and-ice" ground states [23], pseudo-transitions [24], quantum coherence [25], quantum nonlocality [26], quantum Fisher information [27] as well as nanostructures [28,29].…”

Section: Introductionmentioning

confidence: 99%

Quantum magnetism in Fe2Cu2 polymeric branched chains: insights from exactly solved Ising-Heisenberg model

Sivý,

Karl’ová,

Strečka

2024

Front. Phys.

View full text Add to dashboard Cite

The spin-1/2 Ising-Heisenberg branched chain, inspired by the magnetic structure of three isostructural polymeric coordination compounds [(Tp)2Fe2(CN)6X (bdmap)Cu2(H2O)] ⋅ H2O to be further denoted as Fe2Cu2 (Tp = tris(pyrazolyl)hydroborate, bdmapH = 1,3-bis(dimethylamino)-2-propanol, HX = acetic acid, propionic acid or trifluoroacetic acid), is rigorously studied using the transfer-matrix method. The overall ground-state phase diagram reveals three distinct phases: a quantum antiferromagnetic phase, a quantum ferrimagnetic phase and a classical ferromagnetic phase. In the zero-temperature magnetization curve, two quantum ground states are manifested as intermediate plateaus at zero and half of the saturation magnetization, while the magnetization reaches its saturated value within the classical ferromagnetic phase. The bipartite entanglement between nearest-neighbor Heisenberg spins is more pronounced in the quantum ferrimagnetic phase compared to the quantum antiferromagnetic phase due to a fully polarized nature of the Ising spins. A reasonable agreement between theoretical predictions for the spin-1/2 Ising-Heisenberg branched chain and experimental data measured for a temperature dependence of the magnetic susceptibility and a low-temperature magnetization curve suggests strong antiferromagnetic coupling between nearest-neighbor Cu2+-Cu2+ magnetic ions and moderately strong ferromagnetic coupling between nearest-neighbor Cu2+-Fe3+ magnetic ions in the polymeric compounds Fe2Cu2. A thermal entanglement between nearest-neighbor Cu2+-Cu2+ magnetic ions persists up to a relatively high threshold temperature T ≈ 224 K and undergoes a transient magnetic-field-driven strengthening.

show abstract

Section: Introductionmentioning

confidence: 99%

Quantum magnetism in Fe2Cu2 polymeric branched chains: insights from exactly solved Ising-Heisenberg model

Sivý,

Karl’ová,

Strečka

2024

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…Further, different versions of MIN have been introduced [19][20][21][22][23][24][25] and the decoherence effects on MIN have also been explored in detail [26][27][28][29][30]. It is also worth mentioning at this juncture the MIN has also been found to be versatile in the identification of phase transition in physical systems [31].…”

Section: Introductionmentioning

confidence: 99%

Signatures of intrinsic decoherence and weak measurement on quantum correlations

Bhuvaneswari¹,

Muthuganesan²,

Radha³

2021

Laser Phys. Lett.

View full text Add to dashboard Cite

In this article, we consider a pair of spin-1/2 particles with squeezing coupling serving as the physical carrier of quantum information. We then examine the dynamics of quantum correlation quantified by the entanglement and measurement-induced nonlocality (MIN) under the intrinsic decoherence. The impact of intrinsic decoherence on the dynamical behaviors of quantum correlations is investigated. We show that the MIN quantities are more robust, while intrinsic decoherence cause sudden death in entanglement. Besides, we highlight the role of spin squeezing coupling and external magnetic field on quantum correlation measures. Finally, we investigate the impact of weak measurement on MIN.

show abstract

“…In order to circumvent the local ancilla issue, MIN has redefined using different distance measures [24][25][26][27] and entropic quantities [28][29][30]. In recent times, these quantities were studied in various physical systems such as Heisenberg spins [31], optical systems [32], and diamond spin chain [33].…”

Section: Introductionmentioning

confidence: 99%

Facets of nonlocal correlation under non-Hermitian system

Parkavi,

Muthuganesan,

Chandrasekar

2021

Preprint

Self Cite

View full text Add to dashboard Cite

In this article, we investigate the dynamics of a bipartite system under the action of a local non-Hermitian system. We study the quantum correlation of the bipartite system quantified by the entanglement, measurement-induced nonlocality (MIN) based on Hilbert−Schmidt norm, trace distance, and Bell inequality. We find that the quantum correlations of the system depend on the initial conditions and system parameters. We observe that the states with nonzero quantum correlation obey the Bell inequality even in the absence of entanglement. Moreover, the Bell inequality completely fails to manifest the nonlocality for the mixed quantum state. However, we have identified the nonlocal attributes of the mixed quantum state in terms of MIN and trace distance MIN. Our results show that the trace distance-based correlation is more robust against the nonunitary evolution compared to the other quantifiers.

show abstract

Spotlighting quantum phase transition in spin -1/2 Ising–Heisenberg diamond chain employing Measurement-Induced Nonlocality

Cited by 7 publications

References 41 publications

Quantum magnetism in Fe2Cu2 polymeric branched chains: insights from exactly solved Ising-Heisenberg model

Quantum magnetism in Fe2Cu2 polymeric branched chains: insights from exactly solved Ising-Heisenberg model

Signatures of intrinsic decoherence and weak measurement on quantum correlations

Facets of nonlocal correlation under non-Hermitian system

Contact Info

Product

Resources

About