All-fiber self-compensating polarization encoder for Quantum Key Distribution
arXiv:1903.00696 · doi:10.1364/OL.44.002398
Abstract
Quantum Key Distribution (QKD) allows distant parties to exchange cryptographic keys with unconditional security by encoding information on the degrees of freedom of photons. Polarization encoding has been extensively used in QKD implementations along free-space, optical fiber and satellite-based links. However, the polarization encoders used in such implementations are unstable, expensive, complex and can even exhibit side-channels that undermine the security of the implemented protocol. Here we propose a self-compensating polarization encoder based on a Lithium Niobate phase modulator inside a Sagnac interferometer and implement it using only standard telecommunication commercial off-the-shelves components (COTS). Our polarization encoder combines a simple design and high stability reaching an intrinsic quantum bit error rate as low as 0.2%. Since realization is possible from the 800 nm to the 1550 nm band by using COTS, our polarization modulator is a promising solution for free-space, fiber and satellite-based QKD.
REVTeX, 5 pages, 4 figures
References in corpus (19)
- Quantum cryptography: Public key distribution and coin tossing
- The Security of Practical Quantum Key Distribution
- Satellite-to-ground quantum key distribution
- Quantum information processing with superconducting circuits: a review
- Secure quantum key distribution over 421 km of optical fiber
- Free-space quantum key distribution by rotation-invariant twisted photons
- Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
- Finite-key analysis on the 1-decoy state QKD protocol
- CubeSat quantum communications mission
- 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
- 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 for a simplified BB84-like QKD protocol
- Experimental quantum key distribution with finite-key security analysis for noisy channels
- 100 MHz Amplitude and Polarization Modulated Optical Source for Free-Space Quantum Key Distribution at 850 nm
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- Simple Quantum Key Distribution with qubit-based synchronization and a self-compensating polarization encoder
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- Quantum Technologies in Space
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- Resource-effective Quantum Key Distribution: a field-trial in Padua city center
- Optimal design and performance evaluation of free-space Quantum Key Distribution systems
- Simple Quantum Key Distribution using a Stable Transmitter-Receiver Scheme
- Decoy-State Quantum Key Distribution over a Long-Distance High-Loss Underwater Free-Space Channel
- Versatile and concurrent FPGA-based architecture for practical quantum communication systems
- Remote blind state preparation with weak coherent pulses in the field
- GHz-Pulsed Source of Entangled Photons for Reconfigurable Quantum Networks
- Polarization compensation methods for quantum communication networks
- Experimental secure quantum key distribution in presence of polarization-dependent loss
- Effect of light injection on the security of practical quantum key distribution
- Intermodal quantum key distribution field trial with active switching between fiber and free-space channels
- A tunable quantum random number generator based on a fiber-optical Sagnac interferometer
- Phase-coding quantum-key-distribution system based on Sagnac-Mach-Zehnder interferometers
- Quantum communications feasibility tests over a UK-Ireland 224-km undersea link
- Time-bin encoded quantum key distribution over 120 km with a telecom quantum dot source
- General model and modulation strategies for Sagnac-based encoders
- Power-consumption Backdoor in Quantum Key Distribution
- Quantum Random Number Generation with Partial Source Assumptions
- Ultrastable, low-error dynamic polarization encoding of deterministically generated single photons
- A Sagnac-based arbitrary time-bin state encoder for quantum communication applications
- Deployment-ready quantum key distribution over a classical network infrastructure in Padua
- Enabling Shortwave-QKD in Short-Reach Networks: Impact of a Composite ODN Native to Telecom Applications