The freezing Rènyi quantum discord

Li, Xiaoyü; Zhu, Qinsheng; Zhu, Mingzheng; Wu, Hao; Wu, Shao-Yi; Zhu, Ming-Chuan

doi:10.1038/s41598-019-51206-9

Cited by 9 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results offer practical applications in the quantum information since the LQFI and Bures distance entanglement present stable correlations. It was shown theoretically [55][56][57] and experimentally [58,59] that quantum correlations can be frozen over defined time. It is also proven experimentally that the coupled charge qubits are more appropriate to build a practical quantum computer due to their potential suitability for integrated devices [42,60].…”

Section: Discussionmentioning

confidence: 99%

Quantum Fisher Information and Bures Distance Correlations of Coupled Two Charge-Qubits Inside a Coherent Cavity with the Intrinsic Decoherence

et al. 2021

View full text Add to dashboard Cite

The dynamics of two charged qubits containing Josephson Junctions inside a cavity are investigated under the intrinsic decoherence effect. New types of quantum correlations via local quantum Fisher information and Bures distance norm are explored. We show that we can control the quantum correlations robustness by the intrinsic decoherence rate, the qubit-qubit coupling as well as by the initial coherent states superposition. The phenomenon of sudden changes and the freezing behavior for the local quantum Fisher information are sensitive to the initial coherent state superposition and the intrinsic decoherence.

show abstract

Section: Discussionmentioning

confidence: 99%

Quantum Fisher Information and Bures Distance Correlations of Coupled Two Charge-Qubits Inside a Coherent Cavity with the Intrinsic Decoherence

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Since then, the fields of quantum computing, information technology, and computer science have gradually moved towards mutual integration and mutual progress. The study of Rènyi Discord [7], the quantum many-body problem [8], quantum state tomography [9], and quantum correlations [10] based on machine learning have gained attention in the last few years.…”

Section: Introductionmentioning

confidence: 99%

An Image Localization System Based on Single Photon

Wu¹,

Li²,

Zhu³

et al. 2022

Computers, Materials &Amp; Continua

Self Cite

View full text Add to dashboard Cite

As an essential part of artificial intelligence, many works focus on image processing which is the branch of computer vision. Nevertheless, image localization faces complex challenges in image processing with image data increases. At the same time, quantum computing has the unique advantages of improving computing power and reducing energy consumption. So, combining the advantage of quantum computing is necessary for studying the quantum image localization algorithms. At present, many quantum image localization algorithms have been proposed, and their efficiency is theoretically higher than the corresponding classical algorithms. But, in quantum computing experiments, quantum gates in quantum computing hardware need to work at very low temperatures, which brings great challenges to experiments. This paper proposes a single-photon-based quantum image localization algorithm based on the fundamental theory of single-photon image classification. This scheme realizes the operation of the mixed national institute of standards and technology database (MNIST) quantum image localization by a learned transformation for non-noise condition, noisy condition, and environmental attack condition, respectively. Compared with the regular use of entanglement between multi-qubits and low-temperature noise reduction conditions for image localization, the advantage of this method is that it does not deliberately require low temperature and entanglement resources, and it improves the lower bound of the localization success rate. This method paves a way to study quantum computer vision.

show abstract

“…According to the above problems and our previous works [9,12,14,15], a time-dependent open system model is proposed, and several geometric and entropy-type incompatible quantum correlations are further studied. At the same time, several different time-dependent parameter conditions are studied to achieve the controllability of quantum correlation (resurrection correlation and freezing correlation), including the coupling parameters q 12 (t) and q 23 (t) between the environment and the time-dependent control field.…”

Section: Introductionmentioning

confidence: 99%

The Controllability of Quantum Correlation Under Geometry and Entropy Discords

Li¹,

Huang²,

Zhu³

et al. 2021

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

Quantum correlation plays a critical role in the maintenance of quantum information processing and nanometer device design. In the past two decades, several quantitative methods had been proposed to study the quantum correlation of certain open quantum systems, including the geometry and entropy style discord methods. However, there are differences among these quantification methods, which promote a deep understanding of the quantum correlation. In this paper, a novel time-dependent three environmental open system model is established to study the quantum correlation. This system model interacts with two independent spin-environments (two spin-environments are connected to the other spin-environment) respectively. We have calculated and compared the changing properties of the quantum correlation under three kinds of geometry and two entropy discords, especially for the freezing phenomenon. At the same time, some original and novel changing behaviors of the quantum correlation under different timedependent parameters are studied, which is helpful to achieve the optimal revival of the quantum discord and the similar serrated form of the freezing phenomenon. Finally, it shows the controllability of the freezing correlation and the robustness of these methods by adjusting time-dependent parameters. This work provides a new way to control the quantum correlation and design nanospintronic devices.

show abstract

The freezing Rènyi quantum discord

Cited by 9 publications

References 51 publications

Quantum Fisher Information and Bures Distance Correlations of Coupled Two Charge-Qubits Inside a Coherent Cavity with the Intrinsic Decoherence

Quantum Fisher Information and Bures Distance Correlations of Coupled Two Charge-Qubits Inside a Coherent Cavity with the Intrinsic Decoherence

An Image Localization System Based on Single Photon

The Controllability of Quantum Correlation Under Geometry and Entropy Discords

Contact Info

Product

Resources

About