80 citations · 214 across the 13 of their papers we have counts for
13 papers
Experimental zero-added-loss multiplexing Bell-pair source for long-haul quantum networks
Yoshiaki Tsujimoto, Daiki Ichii, Rikizo Ikuta +4
Boosting the communication rate of quantum networks is a central challenge in quantum information science. Recently, an efficient entanglement distribution scheme employing quasi-d…
Asynchronous Multi-photon Interference for Quantum Networks
Baghdasar Baghdasaryan, Karen Lozano-Méndez, Markus Leipe +11
Advanced quantum communication protocols require high-visibility quantum interference between photons generated at distant nodes, which places stringent demands on optical synchron…
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…
Programmable Quantum Linear Interference with Pulse Shaping of Quantum Light
Aruto Hosaka, Masaya Tomita, Yoshiaki Tsujimoto +6
In this paper, we propose a novel method for interfering frequency-multiplexed photonic quantum states without the use of optical nonlinear effects, and experimentally demonstrate…
Quantum state tomography of qudits via Hong-Ou-Mandel interference
Yoshiaki Tsujimoto, Rikizo Ikuta, Kentaro Wakui +2
We propose a method to perform the quantum state tomography (QST) of an -partite qudit state embedded in single photons using the Hong-Ou-Mandel (HOM) interference betw…
Ultra-fast Hong-Ou-Mandel interferometry via temporal filtering
Yoshiaki Tsujimoto, Kentaro Wakui, Mikio Fujiwara +2
Heralded single photons (HSPs) generated by spontaneous parametric down-conversion (SPDC) are useful resource to achieve various photonic quantum information processing. Given a la…
Robust entanglement distribution via telecom fibre assisted by an asynchronous counter-propagating laser light
Koichiro Miyanishi, Yoshiaki Tsujimoto, Rikizo Ikuta +7
Distributing entangled photon pairs over noisy channels is an important task for various quantum information protocols. Encoding an entangled state in a decoherence-free subspace (…
Heralded amplification of nonlocality via entanglement swapping for long-distance device-independent quantum key distribution
Yoshiaki Tsujimoto, Chenglong You, Kentaro Wakui +7
To realize the practical implementation of device-independent quantum key distribution~(DIQKD), the main difficulty is that its security relies on the detection-loophole-free viola…
Optimal conditions for Bell test using spontaneous parametric down-conversion sources
Yoshiaki Tsujimoto, Kentaro Wakui, Mikio Fujiwara +5
We theoretically and experimentally investigate the optimal conditions for the Bell experiment using spontaneous parametric down conversion (SPDC) sources. In theory, we show that…
Long-distance single photon transmission from a trapped ion via quantum frequency conversion
Thomas Walker, Koichiro Miyanishi, Rikizo Ikuta +7
Trapped atomic ions are ideal single photon emitters with long lived internal states which can be entangled with emitted photons. Coupling the ion to an optical cavity enables effi…
High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources
Yoshiaki Tsujimoto, Motoki Tanaka, Nobuo Iwasaki +7
We experimentally demonstrate a high-fidelity entanglement swapping and a generation of the Greenberger-Horne-Zeilinger~(GHZ) state using polarization-entangled photon pairs at tel…
A high visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement
Yoshiaki Tsujimoto, Yukihiro Sugiura, Motoki Tanaka +9
We report on the observation of a high visibility Hong-Ou-Mandel interference of two heralded photons emitted from a spontaneous parametric down conversion~(SPDC) pumped by continu…
Extracting an entangled photon pair from collectively decohered pairs at a telecommunication wavelength
Yoshiaki Tsujimoto, Yukihiro Sugiura, Makoto Ando +5
We experimentally demonstrated entanglement extraction scheme by using photons at the telecommunication band for optical-fiber-based quantum communications. We generated two pairs…