Publications

Listed below are publications relevant to my current project. These are mostly theoretical so far...

Recent ones are uploaded also to the arXiv.

[1] Hiroshi Okamoto, "Resilient quantum electron microscopy", Phys. Rev. A 106, 022605 (2022).

[2] Hiroshi Okamoto, Reza Firouzmand, Ryosuke Miyamura, Vahid Sazgari, Shun Okumura, Shota Uchita, Ismet I. Kaya, "TEM at millikelvin temperatures: Observing and utilizing superconducting qubits", Micron 161, 103330 (2022).

[3] Hiroshi Okamoto, "Full-vortex flux qubit for charged-particle optics", Phys. Rev. A 97, 042342 (2018).

[4] Hiroshi Okamoto, "Quantum interface to charged particles in a vacuum", Phys. Rev. A 92, 053805 (2015).

[5] Hiroshi Okamoto and Yukinori Nagatani, "Entanglement-assisted electron microscopy based on a flux qubit", Appl. Phys. Lett. 104, 062604 (2014).

[6] Hiroshi Okamoto, "Measurement errors in entanglement-assisted electron microscopy", Phys. Rev. A 89, 063828 (2014).

[7] Hiroshi Okamoto, "Possible use of a Cooper-pair box for low-dose electron microscopy", Phys. Rev. A 85, 043810 (2012).

[8] Hiroshi Okamoto, “Adaptive quantum measurement for low-dose electron microscopy”, Phys. Rev. A 81, 043807 (2010).

[9] Hiroshi Okamoto, “Noise suppression by active optics in low-dose electron microscopy”, Appl. Phys. Lett. 92, 063901 (2008).

[10] Hiroshi Okamoto, Tatiana Latychevskaia, and Hans-Werner Fink, “A quantum mechanical scheme to reduce radiation damage in electron microscopy”, Appl. Phys. Lett. 88, 164103 (2006).

The followings are some publications from my past projects.

[1] H. Okamoto, K. Shimizu, and Y. Okuda, "Property of Supercurrent Flowing through Superconducting Single-Electron Transistors with Weak Charging Effect", Jpn. J. Appl. Phys., 35, L108 (1996).

[2] H. Okamoto, A. Itakura, T. Yakabe, and H. Nejoh, "Fabrication of Narrow Gold Wire Using Scanning Tunneling Microscopy", Jpn. J. Appl. Phys. 36, 3832 (1997).

[3] H. Okamoto and H. Nejoh, "Atomically flat gold film surfaces deposited on Si(111) surfaces at room temperature", J. Vac. Sci. Technol. B 16, 3013 (1998).

[4] H. Okamoto, D. Rogers, H. Nejo, H. Mizuno, and T. Naganuma, "Development of an Instrument for Surface Conductivity Measurements at micro-m Scale Region in Ultra High Vacuum", Journal of Surface Analysis, 4, 328 (1998).

[5] Hiroshi Okamoto and Dongmin Chen, "A low-loss, ultrahigh vacuum compatible helium cryostat without liquid nitrogen shield", Rev. Sci. Instrum. 72, 1510 (2001).

[6] Hiroshi Okamoto and Dongmin Chen, "Method for navigating two scanning probes to a common point without additional microscopes", J. Vac. Sci. Technol. A 19, 1822 (2001).

[7] Hiroshi Okamoto and Dongmin Chen, "An ultrahigh vacuum dual-tip scanning tunneling microscope operating at 4.2K", Rev. Sci. Instrum. 72, 4398 (2001).

[8] Hiroshi Okamoto, Dongmin Chen, and Toshishige Yamada, "Competing Classical and Quantum Effects in Shape Relaxation of a Metallic Island", Phys. Rev. Lett. 89, 256101 (2002).

[9] Hiroshi Okamoto and Hans-Werner Fink, “A cryogenic low energy electron point source microscope”, Rev. Sci. Instrum. 77, 043714 (2006).

[10] Hiroshi Okamoto, Teppei Onuki, and Hiroki Kuwano, “Improving an electret transducer by fully utilizing the implanted charge”, Appl. Phys. Lett. 93, 122901 (2008).

[11] Hiroshi Okamoto, Teppei Onuki, Sumito Nagasawa, and Hiroki Kuwano, “Efficient Energy Harvesting from Irregular Mechanical Vibrations by Active Motion Control”, IEEE/ASME Journal of Microelectromechanical Systems 18, 1420 (2009).

[12] Hiroshi Okamoto, Takafumi Suzuki, Kazuhiro Mori, Ziping Cao, Teppei Onuki, and Hiroki Kuwano, "The advantage and potential of electret-based vibration-driven micro energy harvesters", Int. J. Energy Res. 33, 1180 (2009).

[13] Hiroshi Okamoto, Yuichiro Hamate, Li Xu, and Hiroki Kuwano, "Optimal geometry of a parallelized electret-based vibration energy harvester", Smart Mater. Struct. 21, 065001 (2012).