Modeling high quantum bit rate QKD systems over optical fiber

Kaliteevskiy, Nikolay; Nolan, Daniel A.

doi:10.1117/12.2306875

Cited by 16 publications

(11 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We utilised the system model presented in Ref. [32] to model the QKD systems in MATLAB. In this model, QBER and SKR are obtained in the presence of destructive phenomena such as chromatic dispersion (CD) and inter symbol interference.…”

Section: Evaluationsmentioning

confidence: 99%

Towards quantum‐secure software defined networks

Nosouhi,

Sood,

Chamola

et al. 2023

IET Quantum Communication

View full text Add to dashboard Cite

The evolution of quantum computers is considered a serious threat to public‐key cryptosystems (e.g. RSA, ECDSA, ECDH, etc.). This is indeed a big concern for security of the Internet and other data communication and storage systems. The reason is that public‐key schemes are the basis in the generation of shared symmetric keys that are used to perform data encryption/decryption in communication and data transfer protocols. One possible approach to address this issue is to use Quantum Key Distribution (QKD) (instead of public‐key schemes) for the ultra‐secure generation of symmetric keys. QKD is a physical layer technology that allows two parties (equipped with optical communication interfaces) to generate secure random keys over a quantum channel that is immune to eavesdropping threats. The keys are then used by symmetric encryption schemes (e.g. AES) to encrypt data over classical channels. This allows us to have data encryption/decryption without needing a public‐key scheme. However, due to its inherent characteristics, the implementation of QKD has mostly been considered in particular contexts only (e.g. backhaul networks, point‐to‐point connections, optical networks, etc.). This indeed limits the utility of QKD technology to only some particular applications while it has the potential to be used in a wide range of used cases. Motivated by this (increasing the usability of QKD technology), in this study, the authors propose a model that enables SDN‐based networks to utilise QKD technology and provide QKD security service (i.e., random key generation service) to network applications and security protocols in a practical and efficient way. In the proposed approach, secret keys are generated based on the distribution of quantum entanglement between QKD nodes deployed in the network. The significant characteristic of our proposed model is that it does not rely on quantum repeaters to operate. This also improves the efficiency of the employed QKD mechanisms in terms of the key generation rate.

show abstract

Section: Evaluationsmentioning

confidence: 99%

Towards quantum‐secure software defined networks

Nosouhi,

Sood,

Chamola

et al. 2023

IET Quantum Communication

View full text Add to dashboard Cite

show abstract

“…Raman scattering is commonly produced in fiber-optic cables by bright laser light (such as the pulses which carry data in fiber-optic networks) inelastically scattering with the fiber itself [23]. The bandwidth of Raman scattering in optical fibers is usually several Tera-Hertz and the scattering cross-section (𝜌(𝜆)) is on the order of 10 −9 nm −1 km −1 [24]. For a 𝑃 0 = 1 mW laser going down a 𝐿 = 25 km standard single-mode fiber (with attenuation per unit length 𝛼 = 0.2 dB/km), that produces at the output of the fiber [24] 𝑃 𝑆𝑅𝑆 = 𝑃 0 𝐿 𝜌(𝜆)10 𝛼𝐿/10 = 8 × 10 −11 W/nm = 6 × 10 8 (1550-nm photons/s/nm).…”

Section: Modal Brightness Of Dim Light Sourcesmentioning

confidence: 99%

Heterodyne spectrometer sensitivity limit for quantum networking

Chapman,

Peters

2022

Preprint

View full text Add to dashboard Cite

Optical heterodyne detection-based spectrometers are attractive due to their relatively simple construction and ultra-high resolution. Here we demonstrate a proof-ofprinciple heterodyne spectrometer which has picometer resolution and quantum-limited sensitivity. Moreover, we report a generalized quantum limit of detecting broadband multi-mode light using heterodyne detection, which provides a sensitivity limit on a heterodyne detection-based optical spectrometer. We then compare this sensitivity limit to several spectrometer types and dim light sources of interest, such as, spontaneous parametric downconversion, Raman scattering, and spontaneous four-wave mixing. We calculate the heterodyne spectrometer is significantly less sensitive than a single-photon detector and unable to detect these dim light sources under most circumstances.Notice: This manuscript has been co-authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

show abstract

“…These values correspond to the typical performance of SNSPDs modules photon counters for single-photon detection at telecom wavelengths [53]. Finally, the Bob's receiver loss was set to 2.65 dB [54], Bob's interferometer visibility was set to 98%, and the polarization decoherence loss of the link was set to 0.3 dB [43].…”

Section: System Parametersmentioning

confidence: 99%

LEO Satellites Constellation-to-Ground QKD Links: Greek Quantum Communication Infrastructure Paradigm

et al. 2021

View full text Add to dashboard Cite

Quantum key distribution (QKD) has gained a lot of attention over the past few years, but the implementation of quantum security applications is still challenging to accomplish with the current technology. Towards a global-scale quantum-secured network, satellite communications seem to be a promising candidate to successfully support the quantum communication infrastructure (QCI) by delivering quantum keys to optical ground terminals. In this research, we examined the feasibility of satellite-to-ground QKD under daylight and nighttime conditions using the decoy-state BB84 QKD protocol. We evaluated its performance on a hypothetical constellation with 10 satellites in sun-synchronous Low Earth Orbit (LEO) that are assumed to communicate over a period of one year with three optical ground stations (OGSs) located in Greece. By taking into account the atmospheric effects of turbulence as well as the background solar radiance, we showed that positive normalized secure key rates (SKRs) up to 3.9×10−4 (bps/pulse) can be obtained, which implies that satellite-to-ground QKD can be feasible for various conditions, under realistic assumptions in an existing infrastructure.

show abstract

Modeling high quantum bit rate QKD systems over optical fiber

Cited by 16 publications

References 21 publications

Towards quantum‐secure software defined networks

Towards quantum‐secure software defined networks

Heterodyne spectrometer sensitivity limit for quantum networking

LEO Satellites Constellation-to-Ground QKD Links: Greek Quantum Communication Infrastructure Paradigm

Contact Info

Product

Resources

About