activity
20142025
most citedTwo-party LOCC convertibility of quadpartite states and Kraus-Cirac number of two-qubit unitaries

7 citations · 7 across the 7 of their papers we have counts for

collaborators

7 papers

quant-ph2025

Clifford+V synthesis for multi-qubit unitary gates

Soichiro Yamazaki, Seiseki Akibue

We developed a general framework for synthesizing target gates by using a finite set of basic gates, which is a crucial step in quantum compilation. When approximating a gate in SU…

quant-ph2025

Existence of universal resource and uselessness of too entangled states for quantum metrology

Rina Miyajima, Yuki Takeuchi, Seiseki Akibue

We show (i) the existence of universal resource states for a certain class of linear Hamiltonians and (ii) the uselessness of highly entangled states for quantum metrology of linea…

quant-ph2025

Asymptotic Gate Count Bounds for Ancilla-Free Single-Qubit Synthesis with Arithmetic Gates

Kaoru Sano, Hayata Morisaki, Seiseki Akibue

We study ancilla-free approximation of single-qubit unitaries by gate sequences over Clifford+, where or their generalization. Let denote th…

quant-ph2025

Optimal ancilla-free Clifford+T synthesis for general single-qubit unitaries

Hayata Morisaki, Kaoru Sano, Seiseki Akibue

We propose two Clifford+ synthesis algorithms that are optimal with respect to -count. The first algorithm, called deterministic synthesis, approximates any single-qubit unit…

quant-ph2025

Duality of extremal quantum states in verification and data hiding

Seiseki Akibue, Yuki Takeuchi

Quantum state verification (QSV) and quantum data hiding (QDH) have so far been studied separately. QSV decides whether a given quantum state is close to the ideal one, with signif…

quant-ph2024

On the hardness of conversion from entangled proof into separable one

Seiseki Akibue, Go Kato, Seiichiro Tani

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…