Titlebook: International Symposium on Mathematics, Quantum Theory, and Cryptography; Proceedings of MQC 2 Tsuyoshi Takagi,Masato Wakayama,Yasuhiko Ike

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What Kind of Insight Provide Analytical Solutions of Quantum Models?s even if one considers only the determination of the discrete spectrum of the corresponding Hamiltonian, setting aside such important questions as the asymptotic dynamics for long times. In the simplest case, the spectrum can be given in closed form, the eigenvalues . read ., where . is a known fun

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A Review of Secret Key Distribution Based on Bounded Observabilityommon secret information in advance. By using this technique, the sender and the receiver can transmit a message securely in the sense that the message remains secret from any eavesdropper. We introduced a secret key distribution based on the Bounded Observability?(Muramatsu et?al. ., ., .), which p

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Quantum Factoring Algorithm: Resource Estimation and Survey of Experimentsfar, several experiments for the factorization of the small composites such as 15 and 21 have been conducted using small-scale quantum computers. In this study, we investigate the details of quantum circuits used in several factoring experiments. We then indicate that some of the circuits have been

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Towards Constructing Fully Homomorphic Encryption without Ciphertext Noise from Group Theorynd Skeith III had suggested a completely different approach towards achieving FHE. They showed that the . operator can be realized in some . groups; consequently, homomorphically encrypting the elements of the group will yield an FHE scheme, without ciphertext noise to be bootstrapped. However, no o

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From the Bloch Sphere to Phase-Space Representations with the Gottesman–Kitaev–Preskill Encodingll (GKP) mapping. We explore a possible connection between resources for universal quantum computation in discrete-variable (DV) systems, i.e. non-stabilizer states, and negativity of the Wigner function in CV architectures, which is a necessary requirement for quantum advantage. In particular, we s

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Number Theoretic Study in Quantum Interactionssystems including cavity and circuit quantum electrodynamics, quantum dots and artificial atoms, with potential applications in quantum information technologies including quantum cryptography and quantum computing (Haroche and Raimond .; Yoshihara et?al. .). In this extended abstract, based on the c

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