315 citations
- Japan Science and Technology AgencyJP8 papers
- The University of TokyoJP5 papers
- RIKENJP3 papers
- Adam Mickiewicz University in PoznańPL2 papers
- Tohoku UniversityJP2 papers
- VTT Technical Research Centre of FinlandFI2 papers
- Delft University of TechnologyNL1 paper
- Imperial College LondonGB1 paper
- Institute for Molecular ScienceJP1 paper
- Kobe UniversityJP1 paper
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)1 paper
- London Institute for Mathematical SciencesGB1 paper
5 papers · 1 filter
High-efficiency single photon detector combined with an ultra-small APD module and a self-training discriminator for high-speed quantum cryptosystems
Seigo Takahashi, Akio Tajima, Akihisa Tomita
A single-photon avalanche detector (SPAD) for high-speed quantum-key generation has successfully been developed. It has the highest photon detection repetition frequency and the lo…
Single artificial-atom lasing
O. Astafiev, K. Inomata, A. O. Niskanen +4
Solid-state superconducting circuits are versatile systems in which quantum states can be engineered and controlled. Recent progress in this area has opened up exciting possibiliti…
Interqubit coupling mediated by a high-excitation-energy quantum object
S. Ashhab, A. O. Niskanen, K. Harrabi +6
We consider a system composed of two qubits and a high-excitation-energy quantum object used to mediate coupling between the qubits. We treat the entire system quantum mechanically…
Dilemma that cannot be resolved by biased quantum coin flipping
Satoshi Ishizaka
We show that a biased quantum coin flip (QCF) cannot provide the performance of a black-boxed biased coin flip, if it satisfies some fidelity conditions. Although such a QCF satisf…
Mode identification of high-quality-factor single-defect nanocavities in quantum dot-embedded photonic crystals
Masayuki Shirane, Shunsuke Kono, Jun Ushida +4
We investigate the quality (Q) factor and the mode dispersion of single-defect nanocavities based on a triangular-lattice GaAs photonic-crystal (PC) membrane, which contain InAs qu…