3 papers
quant-ph2026
Efficient Fault-Tolerant Ancilla Preparation for Quantum BCH codes via Cyclic Symmetry
Kohei Yamamoto, Keisuke Fujii
One of the major challenges in realizing fault-tolerant quantum computers (FTQCs) is the requirement for a large number of physical qubits. To address this issue, high-rate quantum…
physics.optics2026
Experimental Demonstration of an On-Axis Laser Ranging Interferometer for Future Gravity Missions
Daikang Wei, Christoph Bode, Kohei Yamamoto +6
We experimentally demonstrate a novel interferometric architecture for next-generation gravity missions, featuring a laser ranging interferometer (LRI) that enables monoaxial trans…
astro-ph.IM2025
Observable-based reformulation of time-delay interferometry
Kohei Yamamoto, Jan Niklas Reinhardt, Olaf Hartwig
Spaceborne gravitational-wave observatories utilize a postprocessing technique known as time-delay interferometry (TDI) to reduce the otherwise overwhelming laser frequency noise b…