Concentration and distribution of entanglement based on valley qubits system in graphene

Wang, Chuan; Shen, Wei-Wei; Mi, Sichen; Zhang, Yong; Wang, Zhihui

doi:10.1007/s11434-015-0941-6

Cited by 42 publications

(13 citation statements)

References 44 publications

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“…Because of its fundamental physics and excellent optical, thermal and electrical properties, it has been widely investigated, both experimentally and theoretically 1 2 3 4 . Graphene has been widely applied in quantum information processing 5 , fuel cells 6 , photovoltaic materials 7 , water purification 8 , controlling reactions 9 , and optical modulation 10 .…”

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confidence: 99%

Theoretical Investigations of Optical Origins of Fluorescent Graphene Quantum Dots

Wang

Cao

Ding

et al. 2016

Sci Rep

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The optical properties of graphene quantum dots (GQDs) were investigated theoretically. We focused on the photoinduced charge transfer and electron-hole coherence of single-layer graphene in the electronic transitions in the visible regions. Surface functionalization with donor or acceptor groups produced a red shift in the absorption spectrum, and electrons and holes were highly delocalized. The recombination of excited, well-separated electron-hole (e–h) pairs can result in enhanced fluorescence. This fluorescence enhancement by surface functionalization occurs because of the decreased symmetry of the graphene resulting from the roughened structure of the surface-functionalized GQDs.

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confidence: 99%

Theoretical Investigations of Optical Origins of Fluorescent Graphene Quantum Dots

Wang

Cao

Ding

et al. 2016

Sci Rep

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“…68 proposed a quantum repeater protocol by using entanglement swapping to exchange the entangled chain repeatedly till to create a quantum channel between the sender and receiver. So far, many protocols on purification 69–72 , concentration 73–77 and repeater have been implemented and experimented on to create a pure Bell state. Those techniques caused the practicality of quantum repeater 78,79 to become mature.…”

Section: The Proposed Methodsmentioning

confidence: 99%

“…Those techniques caused the practicality of quantum repeater 78,79 to become mature. Furthermore, more types of entangled states concerning purification and concentration have been subject to experiments and applications, such as multipartite entanglement purification 71 , concentration in graphene 77 , GHZ 80 , cluster 81 state, N-particle W state 76 , and an application for quantum blind computation 72 .…”

Section: The Proposed Methodsmentioning

confidence: 99%

Dynamic Group Multi-party Quantum Key Agreement

Chou

Zeng

Chang

et al. 2018

Sci Rep

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This paper presents a novel dynamic group multi-party Quantum Key Agreement (DGMQKA) protocol, achieved by a multicast transmission method. The proposed method is able to achieve arbitrary number of groups and members under the same resources. In addition, it can be dynamically adjusted by joining a new member, combining two groups into one group, revoking an old member and dividing one group into two groups, for different and complex situations. Furthermore, the proposed protocol can be of help to research into Quantum Secret Sharing (QSS), which it complements. The security analysis shows that the proposed protocol can resist both external and internal attacks. In consumption comparison, the proposed protocol using the multicast transmission method is more effective than other current MQKA protocols.

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“…In 2012, Deng [79] presented the optimal nonlocal multipartite ECP based on projection measurement. Also, some schemes for concentrating W states have been proposed [80][81][82]. Moreover, two groups [83,84] demonstrated in experiment the entanglement concentration of twophoton systems with linear optical elements.…”

Section: Hyperentanglement Swappingmentioning

confidence: 99%

Quantum hyperentanglement and its applications in quantum information processing

2017

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Hyperentanglement is a promising resource in quantum information processing with its high capacity character, defined as the entanglement in multiple degrees of freedom (DOFs) of a quantum system, such as polarization, spatial-mode, orbit-angular-momentum, time-bin and frequency DOFs of photons. Recently, hyperentanglement attracts much attention as all the multiple DOFs can be used to carry information in quantum information processing fully. In this review, we present an overview of the progress achieved so far in the field of hyperentanglement in photon systems and some of its important applications in quantum information processing, including hyperentanglement generation, complete hyperentangled-Bell-state analysis, hyperentanglement concentration, and hyperentanglement purification for high-capacity long-distance quantum communication. Also, a scheme for hyper-controlled-not gate is introduced for hyperparallel photonic quantum computation, which can perform two controlled-not gate operations on both the polarization and spatial-mode DOFs and depress the resources consumed and the photonic dissipation.

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Concentration and distribution of entanglement based on valley qubits system in graphene

Cited by 42 publications

References 44 publications

Theoretical Investigations of Optical Origins of Fluorescent Graphene Quantum Dots

Theoretical Investigations of Optical Origins of Fluorescent Graphene Quantum Dots

Dynamic Group Multi-party Quantum Key Agreement

Quantum hyperentanglement and its applications in quantum information processing

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