A5083625843- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Radiotherapy Techniques
- Medical Imaging Techniques and Applications
- Risk and Safety Analysis
- Cancer, Hypoxia, and Metabolism
- Effects of Radiation Exposure
- Radiation Therapy and Dosimetry
- Advanced X-ray and CT Imaging
- Optical Network Technologies
- Pancreatic and Hepatic Oncology Research
- Quantum Mechanics and Applications
- Quantum and electron transport phenomena
- Microtubule and mitosis dynamics
- Semiconductor Quantum Structures and Devices
- Metabolism, Diabetes, and Cancer
- Cancer Cells and Metastasis
Hiroshima University Hospital
2020-2025
The University of Tokyo
2023
Osaka University
2016-2017
We present a unified approach to analyzing the cost of various quantum error mitigation methods on basis estimation theory. By Fisher information matrix virtual circuit that effectively represents operations methods, we derive for generic layered under wide class Markovian noise that, unbiased an observable encounters exponential growth with depth in lower bound measurement cost. Under global depolarizing noise, particular find can be asymptotically saturated by merely rescaling results....
Abstract Resistance to chemoradiotherapy is one reason for the increased recurrence rate of pancreatic cancer after these therapies. These cells change expression levels several proteins, such as epithelial–mesenchymal transition (EMT), while acquiring chemo- or radio-resistance. In this study, we focused on CD44, a stem cell marker. CD44 has isoforms with different functions: standard isoform (CD44s) and variant (CD44v). However, little known about roles ionizing irradiation. The purpose...
To evaluate the performance of Aquilion Exceed LB computed tomography (CT) scanner for radiotherapy treatment planning, this study examined effect different combinations image reconstruction function (IRF) (AiCE and AIDR) scan parameters on CT-to-physical density (CT-PD) table radiation dose in phantom, object positions CT values. investigate IRF's influence each material, we calculated values by varying tube current, pitch, field view (FOV), phantom position IRF, comparing them with...
Twirling noise affecting quantum gates is essential in understanding and controlling errors, but applicable operations to are usually restricted by symmetries inherent gates. In this Letter, we propose symmetric Clifford twirling, a twirling utilizing only operators that commute with certain Pauli subgroups. We fully characterize how each converted through the show can be scrambled exponentially close global white noise. further demonstrate effective of some highly structured circuits, such...
Quantum error correction and quantum detection necessitate syndrome measurements to detect errors. Performing for each stabilizer generator can be a significant overhead, considering the fact that readout fidelity in current hardware is generally lower than gate fidelity. Here, by generalizing mitigation method known as symmetry expansion, we propose protocol called virtual (VQED). This virtually allows evaluating computation results corresponding postselected states obtained through during...
The rotation symmetric bosonic code (RSBC) is a unified framework of practical codes that have symmetries, such as cat and binomial codes. While achieve the break-even point in which coherence time encoded qubits exceeds unencoded qubits, with nearly approaching point, state preparation fidelity needs to be still improved for quantum computing. Concerning this problem, we investigate symmetry expansion, class error mitigation virtually projects onto noise-free subspace by exploiting system's...
Abstract Purpose To develop a novel biological dosimetric margin (BDM) and to create conversion factor (BCF) that compensates for the difference between physical (PDM) BDM, which provides scheme of direct estimation BDM from dose (PD) distribution. Methods The offset isocenter was applied in 1‐mm steps along left‐right (LR), anterior‐posterior (AP), cranio‐caudal (CC) directions 10 treatment plans lung stereotactic body radiation therapy (SBRT) with prescribed 48 Gy. These were recalculated...
At the early stage of fault-tolerant quantum computing, it is envisioned that gate synthesis a general unitary into universal sets yields error whose magnitude comparable with noise inherent in gates themselves. While known use probabilistic already suppresses such coherent errors quadratically, there no clear understanding on its remnant error, which hinders us from designing holistic countermeasure effectively combined suppression and mitigation. In this work, we propose that, by...
We present a unified approach to analyzing the cost of various quantum error mitigation methods on basis estimation theory. By Fisher information matrix virtual circuit that effectively represents operations methods, we derive for generic layered under wide class Markovian noise that, unbiased an observable encounters exponential growth with depth in lower bound measurement cost. Under global depolarizing noise, particular find can be asymptotically saturated by merely rescaling results....
Resilience engineering is the ability of a system to adjust its own functions and maintain required behavior in face changes disturbances, resilience potential necessary requirement. We aimed clarify relationship between error prevention cases.