Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States

Abstract

We introduce a novel form of decoy-state technique to make the single-photon Bennett 1992 protocol robust against losses and noise of a communication channel. Two uninformative states are prepared by the transmitter in order to prevent the unambiguous state discrimination attack and improve the phase-error rate estimation. The presented method does not require strong reference pulses, additional electronics or extra detectors for its implementation.

7 pages, 2 figures

References in corpus (20)

• Quantum Cryptography
• Mixed State Entanglement and Quantum Error Correction
• Concentrating Partial Entanglement by Local Operations
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Good Quantum Error-Correcting Codes Exist
• Decoy State 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
• Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
• Quantum key distribution over 122 km of standard telecom fiber
• Unambiguous Discrimination Between Linearly-Independent Quantum States
• Unconditionally Secure Key Distribution Based on Two Nonorthogonal States
• Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse
• Quantum Cryptography
• Unconditional Security of the Bennett 1992 quantum key-distribution over lossy and noisy channel
• Unconditionally secure key distillation from multi-photons
• Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse
• Experimental implementation of time-coding quantum key distribution
• Unconditionally secure quantum key-distribution with relatively strong signal pulse

Cited by in corpus (11)

• Advances in Quantum Cryptography
• Continuous variable B92 quantum key distribution protocol using single photon added and subtracted coherent states
• Device-independent entanglement-based Bennett 1992 protocol
• Experimental realization of equiangular three-state quantum key distribution
• Overcoming unambiguous state discrimination attack with the help of Schrödinger Cat decoy states
• Analysis for satellite-based high-dimensional extended B92 and high-dimensional BB84 quantum key distribution
• Quantum control attack on quantum key distribution systems
• Compensating the Noise of a Communication Channel via Asymmetric Encoding of Quantum Information
• Loss tolerant device-independent quantum key distribution: a proof of principle
• Security analysis of the time-coding quantum key distribution protocols
• One-out-of-two Quantum Oblivious Transfer based on Nonorthogonal States