Zobrazeno 1 - 10
of 249
pro vyhledávání: '"Kato, Go"'
A quantum channel whose image approximates the set of separable states is called a disentangler, which plays a prominent role in the investigation of variants of the computational model called Quantum Merlin Arthur games, and has potential applicatio
Externí odkaz:
http://arxiv.org/abs/2402.08981
Quantum key distribution (QKD) can theoretically achieve the Holy Grail of cryptography, information-theoretic security against eavesdropping. However, in practice, discrepancies between the mathematical models assumed in security proofs and the actu
Externí odkaz:
http://arxiv.org/abs/2305.05930
Publikováno v:
npj Quantum Inf 10, 3 (2024)
When preparing a pure state with a quantum circuit, there is an unavoidable approximation error due to the compilation error in fault-tolerant implementation. A recently proposed approach called probabilistic state synthesis, where the circuit is pro
Externí odkaz:
http://arxiv.org/abs/2303.10860
The purpose of unitary synthesis is to find a gate sequence that optimally approximates a target unitary transformation. A new synthesis approach, called probabilistic synthesis, has been introduced, and its superiority has been demonstrated over tra
Externí odkaz:
http://arxiv.org/abs/2301.06307
Publikováno v:
2023 IEEE International Symposium on Information Theory (ISIT), Taipei, Taiwan, 2023, pp. 472-476
There are often situations where two remote users each have data, and wish to (i) verify the equality of their data, and (ii) whenever a discrepancy is found afterwards, determine which of the two modified his data. The most common example is where t
Externí odkaz:
http://arxiv.org/abs/2212.13346
The homodyne detection is one of the most basic tools for identifying the quantum state of light. It has been used to detect useful non-local properties, such as entanglement for the quantum teleportation and distillability of a secret key in quantum
Externí odkaz:
http://arxiv.org/abs/2212.10958
Autor:
Pereira, Margarida, Currás-Lorenzo, Guillermo, Navarrete, Álvaro, Mizutani, Akihiro, Kato, Go, Curty, Marcos, Tamaki, Kiyoshi
Publikováno v:
Phys. Rev. Research 5, 023065 (2023)
The Bennett-Brassard 1984 (BB84) protocol is the most widely implemented quantum key distribution (QKD) scheme. However, despite enormous theoretical and experimental efforts in the past decades, the security of this protocol with imperfect sources h
Externí odkaz:
http://arxiv.org/abs/2210.11754
Publikováno v:
IEEE Transactions on Quantum Engineering, vol. 4, 4100517 (2023)
The key relay protocol (KRP) plays an important role in improving the performance and the security of quantum key distribution (QKD) networks. On the other hand, there is also an existing research field called secure network coding (SNC), which has s
Externí odkaz:
http://arxiv.org/abs/2111.13328
Pure quantum states are often approximately encoded as classical bit strings such as those representing probability amplitudes and those describing circuits that generate the quantum states. The crucial quantity is the minimum length of classical bit
Externí odkaz:
http://arxiv.org/abs/2111.05531
Autor:
Mizutani, Akihiro, Kato, Go
Publikováno v:
Phys. Rev. A 104, 062611 (2021)
Among various quantum key distribution (QKD) protocols, the round-robin differential-phase-shift (RRDPS) protocol has a unique feature that its security is guaranteed without monitoring any statistics. Moreover, this protocol has a remarkable propert
Externí odkaz:
http://arxiv.org/abs/2107.02593