Composable security for continuous variable quantum key distribution: Trust levels and practical key rates in wired and wireless networks
arXiv:2203.00706 · doi:10.1103/PhysRevResearch.3.043014
Abstract
Continuous variable (CV) quantum key distribution (QKD) provides a powerful setting for secure quantum communications, thanks to the use of room-temperature off-the-shelf optical devices and the potential to reach much higher rates than the standard discrete-variable counterpart. In this work, we provide a general framework for studying the composable finite-size security of CV-QKD with Gaussian-modulated coherent-state protocols under various levels of trust for the loss and noise experienced by the parties. Our study considers both wired (i.e., fiber-based) and wireless (i.e., free-space) quantum communications. In the latter case, we show that high key rates are achievable for short-range optical wireless (LiFi) in secure quantum networks with both fixed and mobile devices. Finally, we extend our investigation to microwave wireless (WiFi) discussing security and feasibility of CV-QKD for very short-range applications.
arXiv commentSubmitted to PRR on 11/07/2021. Accepted on 21/9/2021. Published on 7/10/2021. REVTeX. 18 pages, 7 figures
References in corpus (45)
- Gaussian Quantum Information
- Advances in Quantum Cryptography
- Continuous variable quantum cryptography using coherent states
- Fundamental Limits of Repeaterless Quantum Communications
- General Benchmarks for Quantum Repeaters
- Quantum Cryptography without Switching
- High-rate quantum cryptography in untrusted networks
- Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber
- Quantum Distribution of Gaussian Keys with Squeezed States
- Quantum Information Processing with Finite Resources -- Mathematical Foundations
- Advances in Space Quantum Communications
- Security of continuous-variable quantum key distribution via a Gaussian de Finetti reduction
- Microwave quantum illumination using a digital receiver
- Characterization of Collective Gaussian Attacks and Security of Coherent-State Quantum Cryptography
- Generating the local oscillator "locally" in continuous-variable quantum key distribution based on coherent detection
- Toward Global Quantum Communication: Beam Wandering Preserves Nonclassicality
- Quantum discord as a resource for quantum cryptography
- Limits and Security of Free-Space Quantum Communications
- Satellite Quantum Communications: Fundamental Bounds and Practical Security
- Continuous-Variable Quantum Key Distribution using Thermal States
- Self-coherent phase reference sharing for continuous-variable quantum key distribution
- Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels
- Asymptotic security of continuous-variable quantum key distribution with a discrete modulation
- Feasibility of satellite-to-ground continuous-variable quantum key distribution
- Trusted Noise in Continuous-Variable Quantum Key Distribution: a Threat and a Defense
- Feasibility of continuous-variable quantum key distribution with noisy coherent states
- Atmospheric effects on continuous-variable quantum key distribution
- Long-distance continuous-variable quantum key distribution with efficient channel estimation
- Satellite-based links for Quantum Key Distribution: beam effects and weather dependence
- Optimality of Gaussian Discord
- Finite-size security of continuous-variable quantum key distribution with digital signal processing
- Continuous-Variable Quantum Key Distribution with Rateless Reconciliation Protocol
- A security proof of continuous-variable QKD using three coherent states
- Continuous-variable quantum key distribution in fast fading channels
- Quantum communications in a moderate-to-strong turbulent space
- Fading channel estimation for free-space continuous-variable secure quantum communication
- Continuous-variable quantum cryptography with discrete alphabets: Composable security under collective Gaussian attacks
- Gaussian Entanglement Distribution via Satellite
- Continuous-variable quantum key distribution with a leakage from state preparation
- Preventing side-channel effects in continuous-variable quantum key distribution
- Covariance matrices under Bell-like detections
- Stabilization of transmittance fluctuations caused by beam wandering in continuous-variable quantum communication over free-space atmospheric channels
- Hacking Alice's box in CV-QKD
- Analysis of the trusted-device scenario in continuous-variable quantum key distribution
- CV-MDI Quantum Key Distribution via Satellite
Cited by in corpus (30)
- Continuous-variable quantum key distribution system: past, present, and future
- Continuous-mode quantum key distribution with digital signal processing
- Quantum communications in a moderate-to-strong turbulent space
- Satellite-based entanglement distribution and quantum teleportation with continuous variables
- Discrete-modulation continuous-variable quantum key distribution with high key rate
- Composably secure data processing for Gaussian-modulated continuous variable quantum key distribution
- Practical Continuous-variable Quantum Key Distribution with Feasible Optimization Parameters
- Continuous-Variable Measurement-Device-Independent Quantum Key Distribution in Free-Space Channels
- Improved composable key rates for CV-QKD
- Perspectives of microwave quantum key distribution in open-air
- Continuous-variable quantum communication
- Optimizing state-discrimination receivers for continuous-variable quantum key distribution over a wiretap channel
- Experimental composable key distribution using discrete-modulated continuous variable quantum cryptography
- Numerical simulations of atmospheric quantum channels
- Performance analysis for OFDM-based multi-carrier continuous-variable quantum key distribution with arbitrary modulation protocol
- Demonstration of microwave single-shot quantum key distribution
- Composable end-to-end security of Gaussian quantum networks with untrusted relays
- Imperfect photon detection in quantum illumination
- Continuous-variable quantum key distribution: security analysis with trusted hardware noise against general attacks
- Continuous-variable quantum key distribution over multispan links employing phase-insensitive and phase-sensitive amplifiers
- Assessing a binary quantum channel exploiting a Silicon photomultiplier based hybrid receiver
- Practical Routing and Criticality in Large-Scale Quantum Communication Networks
- A Survey on Continuous Variable Quantum Key Distribution for Secure Data Transmission: Toward the Future of Secured Quantum-Networks
- An introductory review of the theory of continuous-variable quantum key distribution: Fundamentals, protocols, and security
- Time correlations in atmospheric quantum channels
- Quantum communications in continuous variable systems
- Realistic Threat Models for Fiber and Free-Space Continuous-Variable Quantum Key Distribution
- Data post-processing for the one-way heterodyne protocol under composable finite-size security
- Optimizing Epsilon Security Parameters in QKD
- Circular-beam approximation for quantum channels in a turbulent atmosphere