169 citations · 958 across the 31 of their papers we have counts for
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Building a large-scale quantum computer with continuous-variable optical technologies
Kosuke Fukui, Shuntaro Takeda
Realizing a large-scale quantum computer requires hardware platforms that can simultaneously achieve universality, scalability, and fault tolerance. As a viable pathway to meeting…
Generating Gottesman-Kitaev-Preskill qubit using a cross-Kerr interaction between a squeezed light and Fock states in optics
Kosuke Fukui, Mamoru Endo, Warit Asavanant +3
Gottesman-Kitaev-Preskill (GKP) qubit is a promising ingredient for fault-tolerant quantum computation (FTQC) in optical continuous variables due to its advantage of noise toleranc…
Efficient backcasting search for optical quantum state synthesis
Kosuke Fukui, Shuntaro Takeda, Mamoru Endo +4
Non-Gaussian states are essential for many optical quantum technologies. The so-called optical quantum state synthesizer (OQSS), consisting of Gaussian input states, linear optics,…
Non-Clifford gate on optical qubits by nonlinear feedforward
Shunya Konno, Warit Asavanant, Kosuke Fukui +6
In a continuous-variable optical system, the Gottesman-Kitaev-Preskill (GKP) qubit is a promising candidate for fault-tolerant quantum computation. To implement non-Clifford operat…
Wave-function engineering via conditional quantum teleportation with non-Gaussian entanglement resource
Warit Asavanant, Kan Takase, Kosuke Fukui +3
We propose and analyze a setup to tailor the wave functions of the quantum states. Our setup is based on the quantum teleportation circuit, but instead of the usual two-mode squeez…
Estimation of Gaussian random displacement using non-Gaussian states
Fumiya Hanamura, Warit Asavanant, Kosuke Fukui +2
In continuous-variable quantum information processing, quantum error correction of Gaussian errors requires simultaneous estimation of both quadrature components of displacements o…
Efficient Concatenated Bosonic Code for Additive Gaussian Noise
Kosuke Fukui, Takaya Matsuura, Nicolas C. Menicucci
Bosonic codes offer noise resilience for quantum information processing. Good performance often comes at a price of complex decoding schemes, limiting their practicality. Here, we…