Telecom and datacom backbone networks are built using optical fiber as it exhibits the lowest transmission loss of all the possible physical media. This same fiber is now being tested for feasibility of carrying quantum bits of information. In a recent article by Takemoto et al. the authors demonstrate secure quantum key distribution over 100 km by using single photon sources. They anticipate feasibility up to 120 km and secure key rates of 0.307 bps. In another study Xiang et al demonstrate O-band quantum dot generated entangled photon transmission over deployed fiber. These results demonstrate that single photon sources can be used in future telecom quantum key distribution (QKD) networks.
We offer a master thesis project on the implementation and realization of a quantum communication network. The network is based on deployed optical fibers linking the KTH campus with Ericsson research lab in Kista and will be operated with single and entangled photon sources based on quantum dots.
The work is to be carried out between the Quantum Nano Photonics group at KTH and Ericsson.
Your task will be to design and realize a device to control and correct single photon polarization and to implement various quantum key distribution schemes. In addition, we also aim at studying and establishing quantum communication protocols.
- Last year of master’s degree studies in the area of mathematics, physics or related fields.
- Be proficient in fiber optics, basic quantum optics and quantum key distribution.
- Proficient in the use of spoken and written English.
Are you in?
Then send in your application (CV, current grades and cover letter written in English collated into one document) as soon as possible.
The process will be ongoing, and we will let you know as soon as we can if you move forward. Any questions? Please email Christian.Sperling@ericsson.com
Last day to apply:
27th of November
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Primary country and city: Sweden (SE) || || Stockholm || IT
Req ID: 304232