Shunya Konno
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View article: 18.6-THz long-haul transmission over G.654.E cutoff-shifted fiber across C + L + U + X-band within single-mode region
18.6-THz long-haul transmission over G.654.E cutoff-shifted fiber across C + L + U + X-band within single-mode region Open
We demonstrate ultra-wideband fiber-optic transmission over an ITU-T G.654.E-compliant cutoff-shifted single-mode fiber (CSF), which has low-loss and low-nonlinearity characteristics. By extending the transmission bandwidth to long wavelen…
View article: Periodically Poled Lithium-niobate-based Wavelength Converters for Waveband Extension to U-Band and Beyond
Periodically Poled Lithium-niobate-based Wavelength Converters for Waveband Extension to U-Band and Beyond Open
View article: Propagating Gottesman-Kitaev-Preskill states encoded in an optical oscillator
Propagating Gottesman-Kitaev-Preskill states encoded in an optical oscillator Open
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-Kitaev-Preskill (GKP) qubit in a single Bosonic harmonic osc…
View article: Nonlinear feedforward enabling quantum computation
Nonlinear feedforward enabling quantum computation Open
Measurement-based quantum computation with optical time-domain multiplexing is a promising method to realize a quantum computer from the viewpoint of scalability. Fault tolerance and universality are also realizable by preparing appropriat…
View article: Estimation of Gaussian random displacement using non-Gaussian states
Estimation of Gaussian random displacement using non-Gaussian states Open
In continuous-variable quantum information processing, quantum error correction of Gaussian errors requires simultaneous estimation of both quadrature components of displacements on phase space. However, quadrature operators $x$ and $p$ ar…
View article: Non-Clifford gate on optical qubits by nonlinear feedforward
Non-Clifford gate on optical qubits by nonlinear feedforward Open
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 operations on GKP qubits, non-Gaussian operations are required. I…