Semi-device-independent randomness from 
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-outcome continuous-variable detection

Tebyanian, Hamid; Avesani, Marco; Vallone, Giuseppe; Villoresi, Paolo

doi:10.1103/physreva.104.062424

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…If the states are not orthogonal, randomness can be extracted from the measurement outcomes of an unambiguous state discrimination protocol. Protocols based on this assumption include [205,206,207,208]. Randomness certification from state discrimination was recently explored using non-contextuality as the notion of classicality [209].…”

Section: Measurement-device-independent Qrngmentioning

confidence: 99%

A Comprehensive Review of Quantum Random Number Generators: Concepts, Classification and the Origin of Randomness

Mannalath¹,

Mishra²,

Pathak³

2022

Preprint

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Random numbers are central to cryptography and various other tasks. The intrinsic probabilistic nature of quantum mechanics has allowed us to construct a large number of quantum random number generators (QRNGs) that are distinct from the traditional true number generators. This article provides a review of the existing QRNGs with a focus on various possible features of QRNGs (e.g., self-testing, device independence, semi-device independence) that are not achievable on the classical world. It also discusses the origin, applicability, and other facets of randomness. Specifically, the origin of randomness is explored from the perspective of a set of hierarchical axioms for quantum mechanics, implying that succeeding axioms can be regarded as a superstructure constructed on top of a structure built by the preceding axioms. The axioms considered are: (Q1) incompatibility and uncertainty; (Q2) contextuality; (Q3) entanglement; (Q4) nonlocality and (Q5) indistinguishability of identical particles. Relevant toy generalized probability theories (GPTs) are introduced, and it is shown that the origin of random numbers in different types of QRNGs known today are associated with different layers of nonclassical theories and all of them do not require all the features of quantum mechanics. Further, classification of the available QRNGs has been done and the technological challenges associated with each class is critically analyzed. Commercially available QRNGs are also compared.

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Section: Measurement-device-independent Qrngmentioning

confidence: 99%

A Comprehensive Review of Quantum Random Number Generators: Concepts, Classification and the Origin of Randomness

Mannalath¹,

Mishra²,

Pathak³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…It should be noted that almost all of the commercial QRNGs are based on DD scenarios as they offer a good level of security with an uncomplicated high-rate device [20][21][22][23]. Different QRNGs can be devised on different degrees of freedom either in a discrete variable (DV) or continuous variable (CV) context with each having its benefits and disadvantages [24].…”

Section: Introductionmentioning

confidence: 99%

Quantum randomness generation via orbital angular momentum modes crosstalk in a ring-core fiber

Zahidy

Tebyanian

Cozzolino

et al. 2022

AVS Quantum Science

Self Cite

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Genuine random numbers can be produced beyond a shadow of doubt through the intrinsic randomness provided by quantum mechanics theories. While many degrees of freedom have been investigated for randomness generation, adequate attention has not been paid to the orbital angular momentum of light. In this work, we present a quantum random number generator based on the intrinsic randomness inherited from the superposition of orbital angular momentum modes caused by the cross talk inside a ring-core fiber. We studied two possible cases: a first one, device-dependent, where the system is trusted, and a second one, semi-device-independent, where the adversary can control the measurements. We experimentally realized the former, extracted randomness, and, after privacy amplification, we achieved a generation rate higher than 10 Mbit/s. In addition, we presented a possible realization of the semi-device-independent protocol using a newly introduced integrated silicon photonic chip. Our work can be considered as a starting point for novel investigation of quantum random number generators based on the orbital angular momentum of light.

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Imperfect Measurement Devices Impact the Security of Tomography‐Based Source‐Independent Quantum Random Number Generator

Li,

Fei,

Wang

et al. 2024

Adv Quantum Tech

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Source‐independent quantum random number generators (SI‐QRNGs) can generate secure random numbers with untrusted and uncharacterized sources. Recently, a tomography‐based SI‐QRNG protocol has garnered significant attention for its higher randomness generation rate[Phys. Rev. A 99, 022328 (2019)], achieved through measurements utilizing three mutually unbiased bases. However, imperfect and inadequately characterized measurement devices would impact the security and performance of this protocol. In this work, considering the imperfect basis modulation, afterpulse effect and detection efficiency mismatch, it is demonstrated that the imperfect measurement devices would reduce the extractable randomness and lead to the incorrect estimation of the conditional min‐entropy. Additionally, the influences of the finite‐size effect and the performances of the protocol based on different parameter estimation methods are investigated and compared. To guarantee the security of generated random numbers, accurate conditional min‐entropy estimation methods that are compatible with imperfect factors are also developed. The work emphasizes the significance of considering the imperfections in measurement devices and establishing tighter bounds for parameter estimation, especially in high‐speed systems, thereby enhancing the robustness and performance of the protocol.

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Semi-device-independent randomness from d -outcome continuous-variable detection

Cited by 11 publications

References 29 publications

A Comprehensive Review of Quantum Random Number Generators: Concepts, Classification and the Origin of Randomness

A Comprehensive Review of Quantum Random Number Generators: Concepts, Classification and the Origin of Randomness

Quantum randomness generation via orbital angular momentum modes crosstalk in a ring-core fiber

Imperfect Measurement Devices Impact the Security of Tomography‐Based Source‐Independent Quantum Random Number Generator

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