425 citations · 3.2k across the 81 of their papers we have counts for
82 papers
Quantum optical synthesis of high-dimensional ultrafast frequency-bin qudits
Prasad Koviri, Tomoya Okita, Rina Yabumoto +6
Frequency modes of light are one of the most promising platforms that provide access to high-dimensional quantum states amongst different photonic degrees of freedom capable of hig…
Programmable non-Gaussian quantum light source with state and temporal-waveform tunability
Hiroko Tomoda, Yu Nishizawa, Akihiro Machinaga +7
A versatile quantum light source capable of programmably generating a variety of quantum light is a key enabler for photonic quantum technologies. In particular, independent contro…
Environment-Assisted Decoherence Suppression of Optical Non-Gaussian States
Akihiro Machinaga, Naoki Aritomi, Ryoga Sakurada +10
Optical loss is a common bottleneck in photonic quantum information processing, undermining the quantum advantage over classical approaches. Although several countermeasures, such…
Tuning Wave-Particle Duality of Quantum Light by Generalized Photon Subtraction
Kan Takase, Mamoru Endo, Fumiya Hanamura +11
Wave--particle duality is a hallmark of quantum mechanics. For bosonic systems, there exists a continuum of intermediate states bridging wave-like Schrödinger cat states and partic…
Waveguide-array-based multiplexed photonic interface for atom array
Yuya Maeda, Toshiki Kobayashi, Takuma Ueno +12
The growing demand for high-capacity quantum communication and large-scale quantum computing underscores the importance of networking quantum processing units via multiplexed photo…
Hybridization of pulse and continuous-wave based optical quantum computation
Tatsuki Sonoyama, Tomoki Sano, Takumi Suzuki +13
We propose a pulse and continuous wave (CW) hybrid architecture of continuous-variable measurement-based optical quantum computation utilizing the strengths of both pulsed and CW l…
Ultra-high-rate detection of entangled photon pairs
Toshimori Honjo, Shigeyuki Miyajima, Shigehito Miki +5
The high-rate detection of entangled photons is essential for advancing photonic quantum information processing. Although several experimental demonstrations have been reported, th…
Hybrid biphoton spectrometer for time-resolved quantum spectroscopy across visible and near-infrared regions
Ozora Iso, Koya Onoda, Nicola J. Fairbairn +4
Joint spectral measurements are a powerful tool for characterising biphoton spectral correlation, which is crucial for quantum information and communication technologies. In these…
High- membrane resonators using ultra-high-stress crystalline TiN films
Yuki Matsuyama, Shotaro Shirai, Ippei Nakamura +6
High-quality-factor () mechanical resonators are essential components for precise sensing and control of mechanical motion at a quantum level. While amorphous materials such as…
Distribution of non-Gaussian states in a deployed telecommunication fiber channel
Casper A. Breum, Xueshi Guo, Mikkel V. Larsen +4
Optical non-Gaussian states hold great promise as a pivotal resource for advanced optical quantum information processing and fault-tolerant long-distance quantum communication. Est…
Evaluating a Multi-Color Entangled-Photon Source for a Bosonic Silicon Quantum Circuit
Koki Nagamachi, Hiroki Yamashita, Mikio Fujiwara +3
We evaluated a multi-color two-photon entangled state generated in silicon via spontaneous four-wave mixing (SFWM) as a potential source for bosonic integrated circuits. Spatially…
Enhancing Intrinsic Quality Factors Approaching 10 Million in Superconducting Planar Resonators via Spiral Geometry
Yusuke Tominaga, Shotaro Shirai, Yuji Hishida +2
This study investigates the use of spiral geometry in superconducting resonators to achieve high intrinsic quality factors, crucial for applications in quantum computation and quan…
Low-loss polarization-maintaining router for single and entangled photons at a telecom wavelength
Pengfei Wang, Soyoung Baek, Masahiro Yabuno +3
Photon polarization serves as an essential quantum information carrier in quantum information and measurement applications. Routing of arbitrarily polarized single photons and pola…
Scalable Optical Quantum State Synthesizer with Dual-Mode Resonator Memory
Fumiya Hanamura, Kan Takase, Kazuki Hirota +12
Optical quantum computing is a promising approach for achieving large-scale quantum computation. While Gaussian operations have been successfully scaled, the inherently weak nonlin…
Experimental entanglement swapping through single-photon nonlinearity
Yoshiaki Tsujimoto, Kentaro Wakui, Tadashi Kishimoto +5
In photonic quantum information processing, quantum operations using nonlinear photon-photon interactions are vital for implementing two-qubit gates and enabling faithful entanglem…
1xN DWDM channel selective quantum frequency conversion
Tomoaki Arizono, Toshiki Kobayashi, Shigehito Miki +5
Dense Wavelength Division Multiplexing (DWDM) is a key technology for realizing high-capacity and flexible quantum communication networks. In addition, to realize the emerging quan…
Low-noise quantum frequency conversion with cavity enhancement of converted mode
Shoichi Murakami, Toshiki Kobayashi, Shigehito Miki +7
Quantum frequency conversion (QFC) which converts the frequencies of photons while preserving the quantum state is an essential technology for realizing the quantum internet and qu…
Generation of multi-photon Fock states at telecommunication wavelength using picosecond pulsed light
Tatsuki Sonoyama, Kazuma Takahashi, Tomoki Sano +9
Multi-photon Fock states have diverse applications such as optical quantum information processing. For the implementation of quantum information processing, it is desirable that Fo…
Optically-Sampled Superconducting-Nanostrip Photon-Number Resolving Detector for Non-Classical Quantum State Generation
Mamoru Endo, Kazuma Takahashi, Takefumi Nomura +11
Photon number-resolving detectors (PNRDs) are the ultimate optical sensors. Superconducting-nanostrip photon detectors (SNSPDs), traditionally known as ON-OFF detectors, have recen…
Boosting the generation rate of squeezed single-photon states by generalized photon subtraction
Hiroko Tomoda, Akihiro Machinaga, Kan Takase +9
In optical quantum information processing with continuous variables, optical non-Gaussian quantum states are essential for universal and fault-tolerant quantum computation. Experim…
Sequential and Programmable Squeezing Gates for Optical Non-Gaussian Input States
Takato Yoshida, Daichi Okuno, Takahiro Kashiwazaki +6
Quantum computing has been pursued with various hardware platforms, and an optical system is one of the most reasonable choices for large-scale computation. In the optical continuo…
High-rate Generation and State Tomography of Non-Gaussian Quantum States for Ultra-fast Clock Frequency Quantum Processors
Akito Kawasaki, Ryuhoh Ide, Hector Brunel +16
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 pursuit,…
Time-domain programmable beam-splitter operations for an optical phase-sensitive non-Gaussian state
Daichi Okuno, Takato Yoshida, Ryoko Arita +7
We present a loop-based optical processor enabling time-domain programmable beam-splitter (BS) operations for a phase-sensitive non-Gaussian state. The loop itself is of high quali…
Superconducting flux qubit with ferromagnetic Josephson -junction operating at zero magnetic field
Sunmi Kim, Leonid V. Abdurakhimov, Duong Pham +6
Conventional superconducting flux qubits require the application of a precisely tuned magnetic field to set the operation point at half a flux quantum through the qubit loop, which…