Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Cai Qing-Yu"'
Publikováno v:
Quantum 7, 1201 (2023)
In this work, we apply the advantage distillation method to improve the performance of a practical twin-field quantum key distribution system under collective attack. Compared with the previous analysis result given by Maeda, Sasaki and Koashi [Natur
Externí odkaz:
http://arxiv.org/abs/2202.10059
Wheeler-DeWitt equation rejects quantum effects of grown-up universes as a candidate for dark energy
Autor:
He, Dongshan, Cai, Qing-yu
Publikováno v:
Phys. Lett. B 809, 135747 (2020)
In this paper, we study the changes of quantum effects of a growing universe by using Wheeler-DeWitt equation (WDWE) together with de Broglie-Bohm quantum trajectory approach. From WDWE, we obtain the quantum modified Friedmann equations which have a
Externí odkaz:
http://arxiv.org/abs/2009.05187
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Wang, Ming-Hao, Cai, Qing-Yu
Publikováno v:
Phys. Rev. A 99, 012324 (2019)
We propose a scheme to enhance the fidelity of symmetric quantum cloning machine using a weak measurement. By adjusting the intensity of weak measurement parameter $p$, we obtain the copies with different optimal fidelity. Choosing proper value of $p
Externí odkaz:
http://arxiv.org/abs/1806.08112
Autor:
Guo, Xiao-Kan, Cai, Qing-yu
Publikováno v:
Modern Physics Letters A, Vol. 33, No. 18 (2018) 1850103
The back reactions of Hawking radiation allow nontrivial correlations between consecutive Hawking quanta, which gives a possible way of resolving the paradox of black hole information loss known as the hidden messenger method. In a recent work of Ma
Externí odkaz:
http://arxiv.org/abs/1804.06408
Autor:
Wang, Ming-hao, Cai, Qing-yu
The correspondence principle suggests that a quantum description for the microworld should be naturally transited to a classical description within the classical limit. However, it seems that there is a large gap between quantum no-cloning and classi
Externí odkaz:
http://arxiv.org/abs/1803.05602
Publikováno v:
Yu-Han Ma et al, EPL 122, 30001 (2018)
We study the Hawking radiation of black holes by considering the canonical typicality. For the universe consisting of black holes and their outer part, we directly obtain a non-thermal radiation spectrum of an arbitrary black hole from its entropy, w
Externí odkaz:
http://arxiv.org/abs/1711.10704
Autor:
Huang, Zhiqiang, Cai, Qing-yu
We show that in the vacuum inflation model, the gravitational baryogenesis mechanism will produce the baryon asymmetry. We analyze the evolution of entropy and baryon number in the vacuum inflation model. The comparison between dilution speed and the
Externí odkaz:
http://arxiv.org/abs/1708.09137
Publikováno v:
Nuclear Physics B 905 (2016) 327-336
We present a necessary and sufficient condition to falsify whether a Hawking radiation spectrum indicates unitary emission process or not from the perspective of information theory. With this condition, we show the precise values of Bekenstein-Hawkin
Externí odkaz:
http://arxiv.org/abs/1608.08304
Autor:
He, Dongshan, Cai, Qing-yu
When two objects have gravitational interaction between them, they are no longer independent of each other. In fact, there exists gravitational correlation between these two objects. Inspired by E. Verlinde's paper, we first calculate the entropy cha
Externí odkaz:
http://arxiv.org/abs/1609.05825