Location History:
- Ibaraki, JP (2009)
- Tsukuba, JP (2011)
- Tokyo, JP (1991 - 2013)
- Sapporo, JP (2021 - 2022)
Company Filing History:
14 out of 35,658 
4 out of 415 
3 out of 359 
Years Active: 1991-2025
Title: **Akihisa Tomita: A Pioneer in Quantum Key Distribution Technology**
Introduction
Akihisa Tomita, a distinguished inventor based in Sapporo, Japan, has made significant contributions to the field of quantum cryptography. With a remarkable portfolio of 16 patents, his innovative work has advanced the technology surrounding secure communication systems.
Latest Patents
Among his latest patents, Tomita has developed several groundbreaking devices including a **transmitting device**, a **receiving device**, a **quantum key distribution method**, and a **quantum key distribution program** aimed at enhancing the overall efficiency of quantum key distribution systems. One of his notable inventions includes a quantum key distribution device that features an encoding unit for optical pulse trains, an intensity modulating unit for diverse modulation types, and a key distillation processing unit for generating encryption keys from specially modulated optical pulses.
Furthermore, he has also worked on a **quantum cryptographic key output apparatus**, which includes a semiconductor laser device that generates pulsed laser light and an encoder for the quantum cryptographic key. This apparatus is designed to ensure that the pulsed laser light meets specific photon count criteria, further strengthening the security of quantum communication systems.
Career Highlights
Throughout his career, Akihisa Tomita has made significant strides while working with prominent organizations such as NEC Corporation and Hokkaido University. His contributions in these institutions have been pivotal in fostering advancements in quantum technologies.
Collaborations
Tomita has collaborated with notable peers, including Yoshihiro Nambu and Kensuke Nakata. Their joint efforts have furthered the exploration of quantum cryptography, leading to innovations that have the potential to revolutionize secure communications.
Conclusion
In summary, Akihisa Tomita's impactful work in quantum key distribution not only showcases his inventive spirit but also his commitment to enhancing security in digital communications. His 16 patents stand as a testament to his dedication and ingenuity in the field of innovations.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.