Search Results for author: Takahiko Satoh

Found 3 papers, 0 papers with code

Pulse-engineered Controlled-V gate and its applications on superconducting quantum device

no code implementations11 Feb 2021 Shun Oomura, Takahiko Satoh, Michihiko Sugawara, Naoki Yamamoto

In this paper, we demonstrate that, by employing OpenPulse design kit for IBM superconducting quantum devices, the controlled-V gate (CV gate) can be implemented in about half the gate time to the controlled-X (CX or CNOT gate) and consequently 65. 5\% reduced gate time compared to the CX-based implementation of CV.

Quantum Physics

Modeling of Measurement-based Quantum Network Coding on IBM Q Experience Devices

no code implementations2 Oct 2019 Poramet Pathumsoot, Takaaki Matsuo, Takahiko Satoh, Michal Hajdušek, Sujin Suwanna, Rodney Van Meter

We also identify the factors that limit the performance of quantum network coding on these processors and provide estimates or error rates required to boost the final Bell pair fidelities to a point where they can be used for generation of genuinely random cryptographic keys among other useful tasks.

Quantum Physics

Extracting Success from IBM's 20-Qubit Machines Using Error-Aware Compilation

no code implementations26 Mar 2019 Shin Nishio, Yulu Pan, Takahiko Satoh, Hideharu Amano, Rodney Van Meter

For a circuit within the capabilities of the hardware, our compilation increases estimated success probability and reduces KL-divergence relative to an error-oblivious placement.

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