Stationary states of a dissipative two-qubit quantum channel and their applications for quantum machine learning

Ghasemian, E.

doi:10.1007/s42484-023-00096-2

Cited by 3 publications

(3 citation statements)

References 107 publications

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“…Interestingly, dissipation allows a promising venue for the stabilization of entanglement [19,20]. This realization may be accomplished for the generation of stationary entanglement between noninteracting (independent) two-qubit systems [21,22].…”

Section: Introductionmentioning

confidence: 99%

Enhanced quantum resources via two distant atom-cavity systems under the influence of atomic dissipation

Setodeh Kheirabady,

Tavassoly,

Rafeie

et al. 2024

Commun. Theor. Phys.

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Quantum resources such as entanglement and coherence are the holy grail for modern quantumtechnologies. Although the unwanted environmental effects tackle quantum information processing tasks, {\color{blue}suprisingly} these key quantum resources may be protected and even enhanced by the implementation of some special hybrid open quantum systems. {\color{blue} Here, we aim to show that how a dissipative atom-cavity-system can be accomplished to generate enhanced quantum resources.}To do so, we consider a couple of dissipative cavities, where each one contains two effective two-level atoms interacting with a single-mode cavity field.{\color{blue} In practical applications, a classical laser field may be applied to drive each atomic subsystem. After driving the system, a Bell-state measurement (BSM) is performed on the output of the system to quantify the entanglement and coherence. }The obtained results reveal that the remote entanglement and coherence between the atoms existing inside the two distant cavities not only enhanced, but can be stabilized, even under the action of dissipation. In contrast, the local entanglement between two atoms inside each dissipative cavity attenuates due to the presence of unwanted environmental effects. Nevertheless, the local coherence may show the same behavior as the remote coherence. {\color{blue}Besides, the system provides the steady state entanglement in various interaction regimes, particularly in the strong atom-cavity coupling and with the relatively large detuning. More interestingly, our numerical analyses demonstrate that the system may show memory effect due top the fact that the death and revival of entanglement take place during the interaction.} Our proposed model may find potential applications for the implementation of long distance quantum networks. In particular, it facilitates the distribution of quantum resources between the nodes of large-scale quantum networks for secure communication. \\

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Section: Introductionmentioning

confidence: 99%

Enhanced quantum resources via two distant atom-cavity systems under the influence of atomic dissipation

Setodeh Kheirabady,

Tavassoly,

Rafeie

et al. 2024

Commun. Theor. Phys.

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“…Besides, the nonclassical features of magnons such as entanglement and blockade effect, [ 22–24 ] can be utilized for performing quantum information tasks [ 3,25 ] and designing single‐magnon generators. [ 26,27 ] For instance, the authors in ref.…”

Section: Introductionmentioning

confidence: 99%

“…[18] Accordingly, both the spintronics and quantum optics communities have tried to know whether quantum states of magnons, such as Fock states, squeezed states, antibunched states, and Schrödinger cat states, can be obtained in magnonic systems. [19][20][21] Besides, the nonclassical features of magnons such as entanglement and blockade effect, [22][23][24] can be utilized for performing quantum information tasks [3,25] and designing single-magnon generators. [26,27] For instance, the authors in ref.…”

Section: Introductionmentioning

confidence: 99%

Magnon Blockade and Magnon–Atom Entanglement Induced by a Qutrit Coupled to a Ferromagnetic YIG Sphere

2023

Self Cite

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Hybridized magnonic-photonic systems promise novel applications for future information processing technologies. Here, a hybrid magnonic system comprising of a qutrit (𝚲-type three-level atom) and a ferromagnetic YIG sphere is considered. Indeed, the whole system is driven by two light fields under the influence of the thermal environment. The indirect magnon-atom interaction is established via the virtual photon exchange. The associated Lindblad master equation is derived and its solution is found to investigate the nonclassical feature, especially in the steady-state solution. Generally, the system shows considerable nonclassicality, that is, strong magnon antibunching and magnon blockade. In fact, the feasibility of using such a hybrid system to prepare a single-magnon source based on magnon blockade effects we theoretically demonstrated. Besides, the considered system may be exploited to generate robust and stable magnon-atom entanglement. The appearance of magnon blockade and magnon-atom entanglement in the 𝚲-type atom may have its origin in the fact that the atom is trapped in different superposition states, induced by the quantum interference phenomenon. The proposed model and the corresponding results may open up an intriguing prospect to prepare a single-magnon source and provide further benefits through concatenating with photons in optomagnonic systems.

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Benefits of Open Quantum Systems for Quantum Machine Learning

Olivera‐Atencio,

Lamata,

Casado‐Pascual

2023

Adv Quantum Tech

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Quantum machine learning (QML) is a discipline that holds the promise of revolutionizing data processing and problem‐solving. However, dissipation and noise arising from the coupling with the environment are commonly perceived as major obstacles to its practical exploitation, as they impact the coherence and performance of the utilized quantum devices. Significant efforts have been dedicated to mitigating and controlling their negative effects on these devices. This perspective takes a different approach, aiming to harness the potential of noise and dissipation instead of combating them. Surprisingly, it is shown that these seemingly detrimental factors can provide substantial advantages in the operation of QML algorithms under certain circumstances. Exploring and understanding the implications of adapting QML algorithms to open quantum systems opens up pathways for devising strategies that effectively leverage noise and dissipation. The recent works analyzed in this perspective represent only initial steps toward uncovering other potential hidden benefits that dissipation and noise may offer. As exploration in this field continues, significant discoveries are anticipated that could reshape the future of quantum computing.

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Stationary states of a dissipative two-qubit quantum channel and their applications for quantum machine learning

Cited by 3 publications

References 107 publications

Enhanced quantum resources via two distant atom-cavity systems under the influence of atomic dissipation

Enhanced quantum resources via two distant atom-cavity systems under the influence of atomic dissipation

Magnon Blockade and Magnon–Atom Entanglement Induced by a Qutrit Coupled to a Ferromagnetic YIG Sphere

Benefits of Open Quantum Systems for Quantum Machine Learning

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