Certified quantum random number generator based on single-photon entanglement

• URL: http://arxiv.org/abs/2104.04452v3
• Date: Fri, 17 Sep 2021 16:16:23 GMT
• Title: Certified quantum random number generator based on single-photon entanglement
• Authors: Nicol\`o Leone, Stefano Azzini, Sonia Mazzucchi, Valter Moretti, Lorenzo Pavesi
• Abstract summary: We show a new certified quantum random number generator based on momentum-polarization entangled single photon states. A semi-device-independent modeling of the photonic quantum random number generator is developed. Our results show that a simple optical implementation combined with an accurate modeling provide an entanglement-based high-security quantum random number generator.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum entanglement represents an ideal resource to guarantee the security of random numbers employed in many scientific and cryptographic applications. However, entanglement-based certified random number generators are particularly challenging to implement. Here, we demonstrate a new certified quantum random number generator based on momentum-polarization entangled single photon states. The use of single photon entanglement allows employing an attenuated laser source and a simple setup where only linear optical components are utilized. For the latter, a semi-device-independent modeling of the photonic quantum random number generator is developed, which certifies a minimum entropy of $(2.5\pm 0.5)\%$, corresponding to a generation rate of 4.4 kHz. At the expenses of a higher level of trust in the system, the certified minimum entropy can be increased to $(30.1 \pm0.5 )\%$, implying a generation rate of 52.7 kHz. Our results show that a simple optical implementation combined with an accurate modeling provide an entanglement-based high-security quantum random number generator using imperfect devices.

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