Dynamics of tripartite quantum correlations and decoherence in flux qubit systems under local and non-local static noise

Arthur, Tsamouo Tsokeng; Tchoffo, Martin; Fai, Lukong Cornelius

doi:10.1007/s11128-018-1899-5

Cited by 7 publications

(7 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides this, the ρ ccm is found to have a better tendency to preserve fluctuations than ρ dcm . This shows correspondence with the previous results analyzing the dynamics of various types of QCs when subject to ρ ccm showing higher fluctuation rate [17,18,27,28,40,44,45]. However, the amplitudes of the fluctuations remained higher in ρ dcm than for the ρ ccm .…”

Section: B Noisy Classical Fieldssupporting

confidence: 92%

“…Besides this, multiple features of these environments such as degrading capacity, memory properties, revivals of the entanglement, and short and long-lived correlations conditions have also been investigated [4,6,17,23]. Besides, different types of noises arising from the coupling of quantum systems with classical environments were also remained active part of the previous studies [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of classical fluctuating environments on decoherence and bipartite quantum correlations dynamics

Rahman,

Javed,

Noman

et al. 2021

Preprint

View full text Add to dashboard Cite

We address the time evolution of the quantum correlations (QCs) such as entanglement, purity, and coherence for a model of two non-interacting qubits initially prepared as a maximally entangled bipartite state. We contrast the comparative potential of the classical fields to preserve these QCs in the noisy and noiseless realms. We also disclose the characteristic dynamical behavior of the QCs of the two-qubit state under the static noisy effects originating from the common and different configuration models. We show that there is a direct connection between the fluctuations allowed by an environment and the QCs preservation. Due to the static noisy dephasing effects, the QCs are suppressed, resulting in the separability of the two-qubit entangled state after a finite duration. Here, the QCs decay effects are found much smaller in the common configuration model than that of the opponent. Furthermore, this protection of the QCs under static noise for large intervals is entirely attributable to the existence of the entanglement sudden death and birth phenomenon. Most importantly, we found the bipartite QCs less fragile than the tripartite ones in comparison under the static noise. In the case of the measures, the concurrence is found to be sharper for showing the entanglement sudden death and birth revivals in comparison to the purity and decoherence.

show abstract

Section: B Noisy Classical Fieldssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effects of classical fluctuating environments on decoherence and bipartite quantum correlations dynamics

Rahman,

Javed,

Noman

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…This decay occcurs because of the dissipation of the entanglement due to the involved environmental noise. Here, we can get D(t) for the time-evolved state of a system ρ(t) as [27]:…”

Section: Decoherencementioning

confidence: 99%

“…Additionally, multiple features of these environments such as degrading capacity, memory properties, revivals of the entanglement, and short and long-lived correlations conditions have also been investigated [4,6,17,23]. In addition, noises emerging from the coupling of quantum systems with classical environments have remained a focus of research in recent years [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Effects of classical fluctuating environments on decoherence and bipartite quantum correlation dynamics

et al. 2021

View full text Add to dashboard Cite

We address the time evolution of quantum correlations (QCs) such as entanglement, purity, and coherence for a model of two non-interacting qubits initially prepared as a maximally entangled bipartite state. We contrast the comparative potential of the classical fields to preserve these QCs in the noisy and noiseless realms. We also disclose the characteristic dynamical behavior of the QCs of the two-qubit state under the static noise effects originating from the common and different configuration models. We show that there is a direct connection between the fluctuations allowed by an environment and the preservation of QCs. Due to the static noise dephasing effects, the QCs are suppressed, resulting in the separability of the two-qubit entangled state after a finite duration. For bipartite QCs preservation, we show that the common configuration is more resourceful than the different configuration. Furthermore, this protection of the QCs under static noise for large intervals is entirely attributable to the existence of the entanglement sudden death and birth phenomenon. Most importantly, we found the bipartite QCs less fragile than the tripartite ones in comparison under the static noise. In addition, we find the concurrence measure to show more evident revivals of entanglement in comparison.

show abstract

“…Moreover, as is found in the literature, extending twopartite systems to three-and more-partite systems is of enough interest for their usefulness applications. For instance, quantum teleportation protocols, based on three-qubit (or in general multi-qubit) entangled states, are widely used in order to construct quantum networks in the theoretical [31][32][33][34] and practical [35][36][37] researches, especially for their applications in the content of weak measurement and quantum measurement reversal. [38][39][40] As an example, the extension of entanglement in superconducting circuits, which has been so far limited to two qubits, to three, eight and ten qubits has been achieved among spins, ions and photons, respectively.…”

Section: Introductionmentioning

confidence: 99%

Dissipative dynamics of an entangled three-qubit system via non-Hermitian Hamiltonian: Its correspondence with Markovian and non-Markovian regimes

Rastegarzadeh¹,

Tavassoly²

2021

Chinese Phys. B

View full text Add to dashboard Cite

We investigate an entangled three-qubit system in which only one of the qubits experiences the decoherence effect by considering a non-Hermitian Hamiltonian, while the other two qubits are isolated, i.e., do not interact with environment, directly. Then, the time evolution of the density matrix (for the pure as well as mixed initial density matrix) and the corresponding reduced density matrices are obtained, by which we are able to utilize the dissipative non-Hermitian Hamiltonian model with Markovian and non-Markovian regimes via adjusting the strange of the non-Hermitian term of the total Hamiltonian of the under-considered system.

show abstract

Dynamics of tripartite quantum correlations and decoherence in flux qubit systems under local and non-local static noise

Cited by 7 publications

References 87 publications

Effects of classical fluctuating environments on decoherence and bipartite quantum correlations dynamics

Effects of classical fluctuating environments on decoherence and bipartite quantum correlations dynamics

Effects of classical fluctuating environments on decoherence and bipartite quantum correlation dynamics

Dissipative dynamics of an entangled three-qubit system via non-Hermitian Hamiltonian: Its correspondence with Markovian and non-Markovian regimes

Contact Info

Product

Resources

About