Numeric estimation of resource requirements for a practical polarization-frame alignment scheme for QKD
arXiv:1810.04112 · doi:10.1515/aot-2020-0016
Abstract
Due to physical orientations and birefringence effects, practical quantum information protocols utilizing optical polarization need to handle misalignment between preparation and measurement reference frames. For any such capable system, an important question is how many resources -- e.g., measured single photons -- are needed to reliably achieve alignment precision sufficient for the desired quantum protocol. Here we study the performance of a polarization-frame alignment scheme used in prior laboratory and field quantum key distribution (QKD) experiments by performing Monte Carlo numerical simulations. The scheme utilizes, to the extent possible, the same single-photon-level signals and measurements as for the QKD protocol being supported. Even with detector noise and imperfect sources, our analysis shows that only a small fraction of resources from the overall signal -- a few hundred photon detections, in total -- are required for good performance, restoring the state to better than 99% of its original quality.
arXiv comment8 pages, 4 figures; clarifying updates and cuts to the text
References in corpus (22)
- Quantum Cryptography
- The Security of Practical Quantum Key Distribution
- Field test of quantum key distribution in the Tokyo QKD Network
- Direct Fidelity Estimation from Few Pauli Measurements
- Complete experimental toolbox for alignment-free quantum communication
- A comprehensive design and performance analysis of LEO satellite quantum communication
- Reference frame independent quantum key distribution
- Minimal qubit tomography
- Airborne demonstration of a quantum key distribution receiver payload
- Entangled quantum states as direction indicators
- Estimation of unitary quantum operations
- Aligning Reference Frames Using Quantum States
- Genuine time-bin-encoded quantum key distribution over a turbulent depolarizing free-space channel
- Optimal state for keeping reference frames aligned and the Platonic solids
- Quantum reverse-engineering and reference frame alignment without non-local correlations
- Experimental quantum key distribution with simulated ground-to-satellite photon losses and processing limitations
- Demonstration of Free-space Reference Frame Independent Quantum Key Distribution
- Polarization basis tracking scheme for quantum key distribution with revealed sifted key bits
- Optimal strategies for sending information through a quantum channel
- Reconstruction of the spin state
- Communication of Spin Directions with Product States and Finite Measurements
- An Optimal Photon Counting Polarimeter