Security of subcarrier wave quantum key distribution against the collective beam-splitting attack

GP Miroshnichenko, AV Kozubov, AA Gaidash… - Optics express, 2018 - opg.optica.org
We consider a subcarrier wave quantum key distribution (QKD) system, where quantum
encoding is carried out at weak sidebands generated around a coherent optical beam as a …

[HTML][HTML] Subcarrier wave continuous variable quantum key distribution with discrete modulation: mathematical model and finite-key analysis

E Samsonov, R Goncharov, A Gaidash, A Kozubov… - Scientific Reports, 2020 - nature.com
In this paper we report a continuous-variable quantum key distribution protocol using
multimode coherent states generated on subcarrier frequencies of the optical spectrum. We …

Feasibility of twin-field quantum key distribution based on multi-mode coherent phase-coded states

V Chistiakov, A Kozubov, A Gaidash, A Gleim… - Optics …, 2019 - opg.optica.org
In this paper we propose feasibility demonstration of twin-field quantum key ditribution
system based on multi-mode weak coherent phase-coded states. Their utilization provides …

Quantum repeaters and teleportation via entangled phase-modulated multimode coherent states

R Goncharov, AD Kiselev, ES Moiseev, E Samsonov… - Physical Review …, 2023 - APS
We present a scheme of quantum repeater that uses entangled multimode coherent states
that are obtained by electro-optic modulation of symmetric and antisymmetric Schrödinger …

Methods of decreasing the unambiguous state discrimination probability for subcarrier wave quantum key distribution systems

A Gaidash, A Kozubov, G Miroshnichenko - JOSA B, 2019 - opg.optica.org
In this paper, we compare two solutions (well known and newly proposed) for subcarrier
wave quantum key distribution systems that decrease the crucial impact of the errorless …

Dissipative dynamics of quantum states in the fiber channel

A Gaidash, A Kozubov, G Miroshnichenko - Physical Review A, 2020 - APS
In this paper we consider the Liouville equation that describes the quantum nonunitary
dynamics of quantum states in optical fiber. We consider a particular case of thermalization …

Countermeasures for advanced unambiguous state discrimination attack on quantum key distribution protocol based on weak coherent states

A Gaidash, A Kozubov, G Miroshnichenko - Physica Scripta, 2019 - iopscience.iop.org
In this paper we investigate the advanced unambiguous state discrimination (USD) attack
that is crucial for quantum key distribution based on phase-coded coherent states …

Coherent detection schemes for subcarrier wave continuous variable quantum key distribution

E Samsonov, R Goncharov, M Fadeev, A Zinoviev… - JOSA B, 2021 - opg.optica.org
We examine different methods to implement coherent detection in subcarrier wave quantum
key distribution (SCW QKD) systems. For classical wave fields, we present the models …

Finite-key security for quantum key distribution systems utilizing weak coherent states

A Kozubov, A Gaidash, G Miroshnichenko - arXiv preprint arXiv …, 2019 - arxiv.org
In this paper we present finite-key security analysis for quantum key distribution protocol
based on weak coherent (in particular phase-coded) states using a fully quantum asymptotic …

[HTML][HTML] Lindblad dynamics and disentanglement in multi-mode bosonic systems

AD Kiselev, R Ali, AV Rybin - Entropy, 2021 - mdpi.com
In this paper, we consider the thermal bath Lindblad master equation to describe the
quantum nonunitary dynamics of quantum states in a multi-mode bosonic system. For the …