Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Choi, Jeong Woon"'
Publikováno v:
Phys. Rev. Applied 15, 054048 (2021)
We present the physical model for the entropy source of a quantum random number generator chip based on the quantum fluctuations of the photon number emitted by light-emitting diodes. This model, combined with a characterization of the chip, estimate
Externí odkaz:
http://arxiv.org/abs/2011.14129
Publikováno v:
Phys. Scr. 90, 025101 (2015)
Even though a method to perfectly sign quantum messages has not been known, the arbitrated quantum signature scheme has been considered as one of good candidates. However, its forgery problem has been an obstacle to the scheme being a successful meth
Externí odkaz:
http://arxiv.org/abs/1407.1380
Until now, there have been developed many arbitrated quantum signature schemes implemented with a help of a trusted third party. In order to guarantee the unconditional security, most of them take advantage of the optimal quantum one-time encryption
Externí odkaz:
http://arxiv.org/abs/1106.5318
Quantum bit commitment has been known to be impossible by the independent proofs of Mayers, and Lo and Chau, under the assumption that the whole quantum states right before the unveiling phase are static to users. We here provide an unconditionally s
Externí odkaz:
http://arxiv.org/abs/0901.1178
Publikováno v:
Phy. Rev. A 78, 012351 (2008).
In this work, we investigate what kinds of quantum states are feasible to perform perfectly secure secret sharing, and present its necessary and sufficient conditions. We also show that the states are bipartite distillable for all bipartite splits, a
Externí odkaz:
http://arxiv.org/abs/0804.4797
Publikováno v:
J. Math. Phys. 49, 112102 (2008)
There is an interesting property about multipartite entanglement, called the monogamy of entanglement. The property can be shown by the monogamy inequality, called the Coffman-Kundu-Wootters inequality [Phys. Rev. A {\bf 61}, 052306 (2000); Phys. Rev
Externí odkaz:
http://arxiv.org/abs/0804.0181
Publikováno v:
J. Phys. A: Math. Theor. 41, 255309 (2008).
We develop a three-party quantum secret sharing protocol based on arbitrary dimensional quantum states. In contrast to the previous quantum secret sharing protocols, the sender can always control the state, just using local operations, for adjusting
Externí odkaz:
http://arxiv.org/abs/0801.0177
In this paper, we present sufficient conditions for states to have positive distillable key rate. Exploiting the conditions, we show that the bound entangled states given by Horodecki et al. [Phys. Rev. Lett. 94, 160502 (2005), quant-ph/0506203] have
Externí odkaz:
http://arxiv.org/abs/quant-ph/0612225
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