Publications (32)
All-optical Implementation of Generalized Quantum Teleportation
Takaya Hoshi, Akito Kawasaki, Xiruo Yan +7
Measurement-based continuous-variable optical quantum computing inherently offers high-speed, large-scale operations, yet its practical performance remains constrained by the proce…
Fundamental limits of parameter estimation with heralded optical non-Gaussian states generated from Gaussian resources
Shohei Kiryu, Kazufumi Tanji, Yoshihiro Ueda +2
Non-Gaussian states can exhibit large quantum Fisher information (QFI) in quantum sensing. In optical systems, however, its generation is often probabilistic via the boson-sampling…
Analog quantum error correction with encoding a qubit into an oscillator
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. Howeve…
Beyond Stellar Rank: Control Parameters for Scalable Optical Non-Gaussian State Generation
Fumiya Hanamura, Kan Takase, Hironari Nagayoshi +6
Advanced quantum technologies rely on non-Gaussian states of light, essential for universal quantum computation, fault-tolerant error correction, and quantum sensing. Their practic…
ZX Graphical Calculus for Continuous-Variable Quantum Processes
Hironari Nagayoshi, Warit Asavanant, Ryuhoh Ide +5
Continuous-variable (CV) quantum information processing is a promising candidate for large-scale fault-tolerant quantum computation. However, analysis of CV quantum process relies…
Propagating Gottesman-Kitaev-Preskill states encoded in an optical oscillator
Shunya Konno, Warit Asavanant, Fumiya Hanamura +14
A quantum computer with low-error, high-speed quantum operations and capability for interconnections is required for useful quantum computations. A logical qubit called Gottesman-K…