Logical states for fault-tolerant quantum computation with propagating light

S Konno, W Asavanant, F Hanamura, H Nagayoshi… - Science, 2024 - science.org
To harness the potential of a quantum computer, quantum information must be protected
against error by encoding it into a logical state that is suitable for quantum error correction …

Nonlinear feedforward enabling quantum computation

A Sakaguchi, S Konno, F Hanamura… - Nature …, 2023 - nature.com
Measurement-based quantum computation with optical time-domain multiplexing is a
promising method to realize a quantum computer from the viewpoint of scalability. Fault …

Gottesman-Kitaev-Preskill qubit synthesizer for propagating light

K Takase, K Fukui, A Kawasaki, W Asavanant… - npj Quantum …, 2023 - nature.com
Practical quantum computing requires robust encoding of logical qubits in physical systems
to protect fragile quantum information. Currently, the lack of scalability limits the logical …

Riemannian optimization of photonic quantum circuits in phase and Fock space

Y Yao, F Miatto, N Quesada - SciPost Physics, 2024 - scipost.org
We propose a framework to design and optimize generic photonic quantum circuits
composed of Gaussian objects (pure and mixed Gaussian states, Gaussian unitaries …

Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength

M Endo, R He, T Sonoyama, K Takahashi… - Optics …, 2023 - opg.optica.org
In the field of continuous-variable quantum information processing, non-Gaussian states
with negative values of the Wigner function are crucial for the development of a fault-tolerant …

All-optical quantum computing using cubic phase gates

N Budinger, A Furusawa, P van Loock - Physical Review Research, 2024 - APS
If suitable quantum optical interactions were available, transforming the field mode operators
in a nonlinear fashion, the all-photonics platform could be one of the strongest contenders …

Error-corrected quantum repeaters with Gottesman-Kitaev-Preskill qudits

F Schmidt, D Miller, P van Loock - Physical Review A, 2024 - APS
The Gottesman-Kitaev-Preskill (GKP) code offers the possibility to encode higher-
dimensional qudits into individual bosonic modes with, for instance, photonic excitations …

Scaling and networking a modular photonic quantum computer

H Aghaee Rad, T Ainsworth, RN Alexander, B Altieri… - Nature, 2025 - nature.com
Photonics offers a promising platform for quantum computing,,–, owing to the availability of
chip integration for mass-manufacturable modules, fibre optics for networking and room …

Gaussian breeding for encoding a qubit in propagating light

K Takase, K Fukui, A Kawasaki, W Asavanant… - arxiv preprint arxiv …, 2022 - arxiv.org
Practical quantum computing requires robust encoding of logical qubits in physical systems
to protect fragile quantum information. Currently, the lack of scalability limits the logical …

Optical Gottesman-Kitaev-Preskill Qubit Generation via Approximate Squeezed Schr\" odinger Cat State Breeding

AJ Pizzimenti, D Soh - arxiv preprint arxiv:2409.06902, 2024 - arxiv.org
Gottesman-Kitaev-Preskill (GKP) qubits, known for their exceptional error-correction
capabilities, are highly coveted in quantum computing. However, generating optical GKP …