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 …

[HTML][HTML] Over-8-dB squeezed light generation by a broadband waveguide optical parametric amplifier toward fault-tolerant ultra-fast quantum computers

T Kashiwazaki, T Yamashima, K Enbutsu… - Applied Physics …, 2023 - pubs.aip.org
We achieved continuous-wave 8.3-dB squeezed light generation using a terahertz-order-
broadband waveguide optical parametric amplifier by improving a measurement setup from …

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 …

[HTML][HTML] Toward a multi-core ultra-fast optical quantum processor: 43-GHz bandwidth real-time amplitude measurement of 5-dB squeezed light using modularized …

A Inoue, T Kashiwazaki, T Yamashima… - Applied Physics …, 2023 - pubs.aip.org
Continuous-variable optical quantum information processing, where quantum information is
encoded in a traveling wave of light called a flying qubit, is a candidate for a practical …

Broadband generation and tomography of non-Gaussian states for ultra-fast optical quantum processors

A Kawasaki, R Ide, H Brunel, T Suzuki, R Nehra… - Nature …, 2024 - nature.com
Quantum information processors benefit from high clock frequencies to fully harness
quantum advantages before they are lost to decoherence. All-optical systems offer unique …

Boosting the generation rate of squeezed single-photon states by generalized photon subtraction

H Tomoda, A Machinaga, K Takase, J Harada… - Physical Review A, 2024 - APS
In optical quantum information processing with continuous variables, optical non-Gaussian
quantum states are essential for universal and fault-tolerant quantum computation …

Quantum arbitrary waveform generator

K Takase, A Kawasaki, BK Jeong, T Kashiwazaki… - Science …, 2022 - science.org
Controlling the temporal waveform of light is the key to a versatile light source in classical
and quantum electronics. Although pulse sha** of classical light is mature and has been …

High-rate generation and state tomography of non-Gaussian quantum states for ultra-fast clock frequency quantum processors

A Kawasaki, R Ide, H Brunel, T Suzuki, R Nehra… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum information processors greatly benefit from high clock frequency to fully
harnessing the quantum advantages before they get washed out by the decoherence. In this …

Spontaneous emission from correlated emitters

O Tziperman, G Baranes, A Gorlach, R Ruimy… - Frontiers in …, 2023 - opg.optica.org
Spontaneous emission from correlated emitters Page 1 Spontaneous emission from correlated
emitters Offek Tziperman1†, Gefen Baranes2,3†, Alexey Gorlach1†*, Ron Ruimy1, Michael …

Non-Gaussian-state generation with time-gated photon detection

T Sonoyama, K Takahashi, B Charoensombutamon… - Physical Review …, 2023 - APS
Non-Gaussian states of light, which are essential in fault-tolerant and universal optical
quantum computation, are typically generated by a heralding scheme using photon …