Quantum-entanglement storage and extraction in quantum network node

2018 ◽  
Vol 16 (01) ◽  
pp. 1850009 ◽  
Author(s):  
ZhuoYu Shan ◽  
Yong Zhang
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Entanglement ◽  
Information Technologies ◽  
Quantum Information Processing ◽  
Bell State ◽  
Nitrogen Vacancy ◽  
Quantum Network ◽  
Nuclear Spins ◽  
Nv Centers

Quantum computing and quantum communication have become the most popular research topic. Nitrogen-vacancy (NV) centers in diamond have been shown the great advantage of implementing quantum information processing. The generation of entanglement between NV centers represents a fundamental prerequisite for all quantum information technologies. In this paper, we propose a scheme to realize the high-fidelity storage and extraction of quantum entanglement information based on the NV centers at room temperature. We store the entangled information of a pair of entangled photons in the Bell state into the nuclear spins of two NV centers, which can make these two NV centers entangled. And then we illuminate how to extract the entangled information from NV centers to prepare on-demand entangled states for optical quantum information processing. The strategy of engineering entanglement demonstrated here maybe pave the way towards a NV center-based quantum network.

On measures of quantum entanglement — A brief review

2016 ◽  
Vol 14 (06) ◽  
pp. 1640024 ◽  
Author(s):  
Debasis Sarkar
Keyword(s):  
Quantum Mechanics ◽  
Information Processing ◽  
Quantum Information ◽  
Quantum Entanglement ◽  
Quantum Correlation ◽  
Composite System ◽  
Quantum Information Processing ◽  
Bipartite Entanglement

Entanglement is one of the most useful resources in quantum information processing. It is effectively the quantum correlation between different subsystems of a composite system. Mathematically, one of the most hard tasks in quantum mechanics is to quantify entanglement. However, progress in this field is remarkable but not complete yet. There are many things to do with quantification of entanglement. In this review, we will discuss some of the important measures of bipartite entanglement.

scholarly journals The Impact of Quantum Phenomena on the Complexity of Communication Systems

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Aleksandar Stojanović
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Communication Systems ◽  
Information Technologies ◽  
Quantum Information Processing ◽  
Point Of View ◽  
Classical Information ◽  
Information Unit ◽  
Quantum Phenomena ◽  
The Impact

Abstract: This publication put the accent on strategical problems in information transmission. The analysis is based on substantially different structure between classical (bit) and quantum information unit (qubit). The scientific methodology used in this publication is relatively new (single qubit transfer based on no-cloning theorem). Important part of publication is devoted to solving problems where quantum information processing offers much more prolific solutions than classical information processing. From practical point of view, the advances of quantum based information technologies have been presented.

Quantum Information Processing with NV centers at Room Temperature

2013 ◽  
Author(s):  
Peter C. Maurer ◽  
Georg Kucsko ◽  
Christian Latta ◽  
Liang Jiang ◽  
Norman Y. Yao ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Room Temperature ◽  
Quantum Information Processing ◽  
Nv Centers

scholarly journals Entanglement enhanced distinguishability of coherence-breaking channels

2019 ◽  
Vol 17 (04) ◽  
pp. 1950036
Author(s):  
Long-Mei Yang ◽  
Tao Li ◽  
Shao-Ming Fei ◽  
Zhi-Xi Wang
Keyword(s):  
Quantum Mechanics ◽  
Information Processing ◽  
Quantum Information ◽  
Quantum Entanglement ◽  
Error Probability ◽  
Quantum Information Processing ◽  
Superposition Principle ◽  
Important Resource ◽  
Minimal Error ◽  
Different Types

Originating from the superposition principle in quantum mechanics, coherence has been extensively studied as a kind of important resource in quantum information processing. We investigate the distinguishability of coherence-breaking channels with the help of quantum entanglement. By explicitly computing the minimal error probability of channel discrimination, it is shown that entanglement can enhance the capacity of coherence-breaking channel distinguishability with same types for some cases while it cannot be enhanced for some other cases. For coherence-breaking channels with different types, the channel distinguishability cannot be enhanced via entanglement.

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