no code implementations • 9 Jun 2020 • Hayata Yamasaki, Kosuke Fukui, Yuki Takeuchi, Seiichiro Tani, Masato Koashi
Based on this protocol, we design a fault-tolerant photonic MBQC protocol that can be performed by experimentally tractable homodyne detection and Gaussian entangling operations combined with the Gottesman-Kitaev-Preskill (GKP) quantum error-correcting code, which we concatenate with the $7$-qubit code.
Quantum Physics
no code implementations • 13 Apr 2020 • Kosuke Fukui, Warit Asavanant, Akira Furusawa
Measurement-based quantum computation with continuous variables in an optical setup shows the great promise towards implementation of large-scale quantum computation, where the time-domain multiplexing approach enables us to generate the large-scale cluster state used to perform measurement-based quantum computation.
Quantum Physics
no code implementations • 24 Jun 2019 • Kosuke Fukui
In this work, we propose a scheme to improve noise tolerance during the construction of large-scale cluster state used for FTQC with the GKP qubits.
Quantum Physics
no code implementations • 11 Apr 2018 • Kosuke Fukui, Akihisa Tomita, Atsushi Okamoto
In the proposed method, the analog quantum error correction is utilized to make the performances of the single-qubit level quantum error correction almost identical to those of the logical-qubit level quantum error correction in a practical noise level.
Quantum Physics
no code implementations • 1 Dec 2017 • Kosuke Fukui, Akihisa Tomita, Atsushi Okamoto, Keisuke Fujii
To reduce this requirement, we propose a high-threshold fault-tolerant quantum computation with GKP qubits using topologically protected measurement-based quantum computation with the surface code.
Quantum Physics
no code implementations • 9 Jun 2017 • Kosuke Fukui, Akihisa Tomita, Atsushi Okamoto
To implement fault-tolerant quantum computation with continuous variables, Gottesman-Kitaev-Preskill (GKP) qubits have been recognized as an important technological element.
Quantum Physics
