7 papers · 1 filter
Quantum algorithms without initializing the auxiliary qubits
Dong Pyo Chi, Jeong San Kim, Soojoon Lee
In this Letter, we construct the quantum algorithms for the Simon problem and the period-finding problem, which do not require initializing the auxiliary qubits involved in the pro…
Secure quantum cryptographic network based on quantum key distribution
Sora Choi, Soojoon Lee, Dong Pyo Chi
We present a protocol for quantum cryptographic network consisting of a quantum network center and many users, in which any pair of parties with members chosen from the whole users…
Quantum key distribution between two groups using secret sharing
Sora Choi, Jinsoo Kim, Dong Pyo Chi
In this paper, we investigate properties of some multi-particle entangled states and, from the properties applying the secret sharing present a new type of quantum key distribution…
Function-dependent Phase Transform in Quantum Computing
Dong Pyo Chi, Jinsoo Kim, Soojoon Lee
We construct a quantum algorithm that performs function-dependent phase transform and requires no initialization of an ancillary register. The algorithm recovers the initial state…
Quantum Algorithm for Generalized Deutsch-Jozsa Problem
Dong Pyo Chi, Jinsoo Kim, Soojoon Lee
We generalize the Deutsch-Jozsa problem and present a quantum algorithm that can solve the generalized Deutsch-Jozsa problem by a single evaluation of a given function. We discuss…
The f-conditioned Phase Transform
Dong Pyo Chi, Jinsoo Kim, Soojoon Lee
We present a quantum algorithm for the f-conditioned phase transform which does not require any initialization of ancillary register. We also develop a quantum algorithm that can s…