Simple Quantum Key Distribution with qubit-based synchronization and a self-compensating polarization encoder
arXiv:1909.12703 · doi:10.1364/OPTICA.381013
Abstract
Quantum Key Distribution (QKD) relies on quantum communication to allow distant parties to share a secure cryptographic key. Widespread adoption of QKD in current telecommunication networks will require the development of simple, low cost and stable systems. However, current QKD implementations usually include additional hardware that perform auxiliary tasks such as temporal synchronization and polarization basis tracking. Here we present a polarization-based QKD system operating at 1550 nm that performs synchronization and polarization compensation by exploiting only the hardware already needed for the quantum communication task. Polarization encoding is performed by a self-compensating Sagnac loop modulator which exhibits high temporal stability and the lowest intrinsic quantum bit error rate reported so far.The QKD system was tested over a fiber-optic link, demonstrating tolerance up to about 40 dB of channel losses. Thanks to its reduced hardware requirements and the quality of the source, this work represents an important step towards technologically mature QKD systems.
arXiv comment8 pages, 4 figures
References in corpus (44)
- Quantum Cryptography
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer
- Quantum cryptography: Public key distribution and coin tossing
- The Security of Practical Quantum Key Distribution
- Quantum Computing
- Satellite-to-ground quantum key distribution
- Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance
- Secure quantum key distribution over 421 km of optical fiber
- Photonic quantum information processing: a review
- Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
- Shor's quantum factoring algorithm on a photonic chip
- Free-space quantum key distribution by rotation-invariant twisted photons
- Progress in satellite quantum key distribution
- Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
- Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
- Experimental Satellite Quantum Communications
- Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate
- 200km Decoy-state quantum key distribution with photon polarization
- Loss-tolerant quantum cryptography with imperfect sources
- A Short Wavelength GigaHertz Clocked Fiber-Optic Quantum Key Distribution System
- Secure heterodyne-based quantum random number generator at 17 Gbps
- Finite-key analysis on the 1-decoy state QKD protocol
- Metropolitan quantum key distribution with silicon photonics
- Full polarization control for fiber optical quantum communication systems using polarization encoding
- Simple 2.5 GHz time-bin quantum key distribution
- CubeSat quantum communications mission
- Entangled Quantum Key Distribution Over Two Free-Space Optical Links
- Practical gigahertz quantum key distribution robust against channel disturbance
- Patterning-effect-free intensity modulator for secure decoy-state quantum key distribution
- Interference at the Single Photon Level Along Satellite-Ground Channels
- Fully automated entanglement-based quantum cryptography system for telecom fiber networks
- Adaptive Real Time Selection for Quantum Key Distribution in Lossy and Turbulent Free-Space Channels
- All-fiber self-compensating polarization encoder for Quantum Key Distribution
- Experimental single photon exchange along a space link of 7000 km
- Proof-of-Concept of Real-World Quantum Key Distribution with Quantum Frames
- Simple and high-speed polarization-based QKD
- Towards Quantum Communication from Global Navigation Satellite System
- Security proof of a three-state quantum key distribution protocol without rotational symmetry
- Experimental quantum key distribution with simulated ground-to-satellite photon losses and processing limitations
- Polarization basis tracking scheme for quantum key distribution with revealed sifted key bits
- Modulator-free coherent-one-way quantum key distribution
- Security of quantum key distribution with detection-efficiency mismatch in the single-photon case: Tight bounds
- Remote blind state preparation with weak coherent pulses in the field
Cited by in corpus (32)
- High-rate quantum key distribution exceeding 110 Mb/s
- Full daylight quantum-key-distribution at 1550 nm enabled by integrated silicon photonics
- Fast and simple qubit-based synchronization for quantum key distribution
- Quantum Technologies in Space
- A scalable network for simultaneous pairwise quantum key distribution via entanglement-based time-bin coding
- Stable, low-error and calibration-free polarization encoder for free-space quantum communication
- Optimal design and performance evaluation of free-space Quantum Key Distribution systems
- Topological synchronization of quantum van der Pol oscillators
- Simple Quantum Key Distribution using a Stable Transmitter-Receiver Scheme
- Fibre polarization state compensation in entanglement-based quantum key distribution
- Versatile and concurrent FPGA-based architecture for practical quantum communication systems
- Degree of Quantumness in Quantum Synchronization
- Security of quantum key distribution with detection-efficiency mismatch in the multiphoton case
- Experimental secure quantum key distribution in presence of polarization-dependent loss
- Integrated quantum communication network and vibration sensing in optical fibers
- Cross-encoded quantum key distribution exploiting time-bin and polarization states with qubit-based synchronization
- Dead time duration and active reset influence on the afterpulse probability of InGaAs/InP single-photon avalanche diodes
- Experimental study of secure quantum key distribution with source and detection imperfections
- Topological quantum synchronization of fractionalized spins
- Synchronization of quantum communication over an optical classical communication channel
- Quantum Effects on the Synchronization Dynamics of the Kuramoto Model
- Wavelength- and time-division multiplexing via pump current variation of a pulsed semiconductor laser -- a method of synchronization for quantum key distribution
- Energetic cost for speedy synchronization in non-Hermitian quantum dynamics
- Low-error encoder for time-bin and decoy states for quantum key distribution
- Non-local polarization alignment and control in fiber using feedback from correlated measurements of entangled photons
- In-Field Comparison between G.652 and G.655 Optical Fibers for Polarization-Based Quantum Key Distribution
- Resource-Efficient Real-Time Polarization Compensation for MDI-QKD with Rejected Data
- Surpassing the loss-noise robustness trade-off in quantum key distribution
- BIFROST: A First-Principles Model of Polarization Mode Dispersion in Optical Fiber
- A Sagnac-based arbitrary time-bin state encoder for quantum communication applications
- Quantum Physics in Space
- Qubit-based clock synchronization for QKD systems using a Bayesian approach