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Contact person Prof. Sonia Mazzucchi (sonia.mazzucchi@unitn.it)

GENERAL INFORMATION

Within the blooming area of quantum information, quantum key distribution (QKD) represents one of the

most important lines of research where entanglement plays a key role. Besides the extensively studied

entanglement between the degrees of freedom of two different particles, it is also possible to consider the

intra-particle or single-particle entanglement (SPE) between two different degrees of freedom of the same

particle [Az20,Pa20]. SPE is easier to produce since it requires linear optical components and cheap light

sources, and it has recently turned out to be a valuable resource for quantum information, e.g. in the entropy

certification of quantum random number generators [Ma21].

The main goal of the project is the development, the security analysis as well as a critical evaluation of new

QKD protocols based on SPE. Experiments will also be performed to validate the proposed QKD protocol.

The PhD student will be enrolled in the Transdisciplinary Doctoral Program in Quantum Science and

Technologies of the Q@TN joint laboratory (https://www.unitn.it/drphys/en/421/transdisciplinary-program-

quantum-science-and-technologies)

IDEAL CANDIDATE

The ideal candidate should be a highly motivated student possessing a MSc in Mathematics, Physics, Computer

Science or equivalent degrees.

A strong interest in interdisciplinarity as well as an expertise in modern cryptography and security analysis

are highly recommended

REFERENCES

[Az20]S. Azzini, S. Mazzucchi, V. Moretti, D. Pastorello, L. Pavesi. Single-particle Entanglement.

ADVANCED QUANTUM TECHNOLOGIES. - ISSN 2511-9044. - 2020 vol 3:10(2020).

[Pa20] M. Pasini, Matteo, N. Leone, S. Mazzucchi, V. Moretti, D. Pastorello, L. Pavesi. Bell inequality vio-

lation by entangled single photon states generated from a laser, a LED or a Halogen lamp.

Phys. Rev. A 102, 063708 (2020)

[Ma21] S. Mazzucchi, S. Azzini, N. Leone, L. Pavesi, V. Moretti. Entropy certification of a realistic quan-

tum random numbers generator based on single particle entanglement. Phys. Rev. A 104, 022416,

(2021).

[Le22] N. Leone, S. Azzini, S. Mazzucchi, V.Moretti, L. Pavesi: Certified quantum random numbers based on single-photon entanglement, Physical Review Applied 17, 034011 (2022)

PATENT (granted - 2022)

DEVICE FOR THE GENERATION OF SINGLE PHOTON ENTANGLED STATES

https://www.knowledge-share.eu/en/patent/device-for-the-generation-of-si...