Towards practical high-speed high dimensional quantum key distribution using partial mutual unbiased basis of photon's orbital angular momentum

Abstract

Quantum Key Distribution (QKD) guarantees the security of communication with quantum physics. Most of widely adopted QKD protocols currently encode the key information with binary signal format---qubit, such as the polarization states. Therefore the transmitted information efficiency of the quantum key is intrinsically upper bounded by 1 bit per photon. High dimensional quantum system is a potential candidate for increasing the capacity of single photon. However, due to the difficulty in manipulating and measuring high dimensional quantum systems, the experimental high dimensional QKD is still at its infancy. Here we propose a sort of practical high-speed high dimensional QKD using partial mutual unbiased basis (PMUB) of photon's orbital angular momentum (OAM). Different from the previous OAM encoding, the high dimensional Hilbert space we used is expanded by the OAM states with same mode order, which can be extended to considerably high dimensions and implemented under current state of the art. Because all the OAM states are in the same mode order, the coherence will be well kept after long-distance propagation, and the detection can be achieved by using passive linear optical elements with very high speed. We show that our protocol has high key generation rate and analyze the anti-noise ability under atmospheric turbulence. Furthermore, the security of our protocol based on PMUB is rigorously proved. Our protocol paves a brand new way for the application of photon's OAM in high dimensional QKD field, which can be a breakthrough for high efficiency quantum communications.

Comments are welcome

References in corpus (32)

• Quantum Cryptography
• The Security of Practical Quantum Key Distribution
• Entanglement of Orbital Angular Momentum States of Photons
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
• Quantum Key Distribution with High Loss: Toward Global Secure Communication
• Beating the PNS attack in practical quantum cryptography
• Security of quantum key distribution using d-level systems
• Security Aspects of Practical Quantum Cryptography
• Hacking commercial quantum cryptography systems by tailored bright illumination
• Practical Decoy State for Quantum Key Distribution
• Security against individual attacks for realistic quantum key distribution
• Side-channel-free quantum key distribution
• Entropic Uncertainty Relations and their Applications
• Quantum Cryptography with Coherent States
• Quantum Hacking: Experimental demonstration of time-shift attack against practical quantum key distribution systems
• High-Dimensional Intra-City Quantum Cryptography with Structured Photons
• Experimental Quantum Cryptography with Qutrits
• Twisted Light Transmission over 143 kilometers
• Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
• Experimental Quantum Key Distribution with Decoy States
• Incoherent and Coherent Eavesdropping in the 6-state Protocol of Quantum Cryptography
• Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
• Experimental demonstration of phase-remapping attack in a practical quantum key distribution system
• Proposal for Implementing Device-Independent Quantum Key Distribution based on a Heralded Qubit Amplification
• Conjectured Strong Complementary Information Tradeoff
• Phase-Remapping Attack in Practical Quantum Key Distribution Systems
• Numerical approach for unstructured quantum key distribution
• Heralded qubit amplifiers for practical device-independent quantum key distribution
• Proof-of-principle experiment of reference-frame-independent quantum key distribution with phase coding

Cited by in corpus (4)

• Realization of a scalable Laguerre-Gaussian mode sorter based on a robust radial mode sorter
• Using all transverse degrees of freedom in quantum communications based on a generic mode sorter
• Performance analysis of d-dimensional quantum cryptography under state-dependent diffraction
• Efficient High-dimensional Quantum Key Distribution with Hybrid Encoding