Finite resource performance of small satellite-based quantum key distribution missions
arXiv:2204.12509 · doi:10.1103/PRXQuantum.5.030101
Abstract
In satellite-based quantum key distribution (QKD), the number of secret bits that can be generated in a single satellite pass over the ground station is severely restricted by the pass duration and the free-space optical channel loss. High channel loss may decrease the signal-to-noise ratio due to background noise, reduce the number of generated raw key bits, and increase the quantum bit error rate (QBER), all of which have detrimental effects on the output secret key length. Under finite-size security analysis, higher QBER increases the minimum raw key length necessary for non-zero secret key length extraction due to less efficient reconciliation and post-processing overheads. We show that recent developments in finite key analysis allow three different small-satellite-based QKD projects CQT-Sat, UK-QUARC-ROKS, and QEYSSat to produce secret keys even under very high loss conditions, improving on estimates based on previous finite key bounds. This suggests that satellites in low Earth orbit can satisfy finite-size security requirements, but remains challenging for satellites further from Earth. We analyse the performance of each mission to provide an informed route toward improving the performance of small-satellite QKD missions. We highlight the short and long-term perspectives on the challenges and potential future developments in small-satellite-based QKD and quantum networks. In particular, we discuss some of the experimental and theoretical bottlenecks, and improvements necessary to achieve QKD and wider quantum networking capabilities in daylight and at different altitudes.
arXiv comment15 pages, 8 figures, and 5 tables. Improved analysis with detailed discussions and perspectives. Comments welcome
References in corpus (53)
- Satellite-to-ground quantum key distribution
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Reference frames, superselection rules, and quantum information
- Tight Finite-Key Analysis for Quantum Cryptography
- Quantum Cryptography using entangled photons in energy-time Bell states
- On-demand generation of indistinguishable polarization-entangled photon pairs
- Concise Security Bounds for Practical Decoy-State Quantum Key Distribution
- Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
- Micius quantum experiments in space
- Breaking the Rate-Loss Bound of Quantum Key Distribution with Asynchronous Two-Photon Interference
- Advances in Space Quantum Communications
- A comprehensive design and performance analysis of LEO satellite quantum communication
- A Geometric Perspective on Quantum Parameter Estimation
- Reference frame independent quantum key distribution
- Estimates for practical quantum cryptography
- Practical issues in quantum-key-distribution post-processing
- Local and Distributed Quantum Computation
- Quantum key distribution surpassing the repeaterless rate-transmittance bound without global phase locking
- Superconducting nanowire for single-photon detection: progress, challenges and opportunities
- Improved key rate bounds for practical decoy-state quantum key distribution systems
- Experimental Quantum Communication Overcomes the Rate-loss Limit without Global Phase Tracking
- Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals
- Airborne demonstration of a quantum key distribution receiver payload
- Feasibility of satellite-to-ground continuous-variable quantum key distribution
- Space-borne quantum memories for global quantum communication
- Experimental open air quantum key distribution with a single photon source
- Studying Free-Space Transmission Statistics and Improving Free-Space QKD in the Turbulent Atmosphere
- Satellite-based Quantum Information Networks: Use cases, Architecture, and Roadmap
- Experimental single photon exchange along a space link of 7000 km
- Tight bounds on the simultaneous estimation of incompatible parameters
- Genuine time-bin-encoded quantum key distribution over a turbulent depolarizing free-space channel
- Tight security bounds for decoy-state quantum key distribution
- What are single photons good for?
- Strategies for achieving high key rates in satellite-based QKD
- Experimental quantum key distribution with simulated ground-to-satellite photon losses and processing limitations
- Satellite constellations for trusted node QKD networks
- Quantum repeaters in space
- Simulating quantum repeater strategies for multiple satellites
- Security analysis of quantum key distribution with small block length and its application to quantum space communications
- Mitigating radiation damage of single photon detectors for space applications
- Silicon avalanche photodiode operation and lifetime analysis for small satellites
- Fundamental Finite Key Limits for One-Way Information Reconciliation in Quantum Key Distribution
- Spaceborne low-noise single-photon detection for satellite-based quantum communications
- Analysis of satellite-to-ground quantum key distribution with adaptive optics
- Quantum metrology of spatial deformation using arrays of classical and quantum light emitters
- Adaptive optics benefit for quantum key distribution uplink from ground to a satellite
- Finite key performance of satellite quantum key distribution under practical constraints
- Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity
- Time-delayed single satellite quantum repeater node for global quantum communications
- Demonstration of a 6 State-4 State Reference Frame Independent channel for Quantum Key Distribution
- Repeated radiation damage and thermal annealing of avalanche photodiodes
- The information of high-dimensional time-bin encoded photons
- Optimal control for quantum detectors