Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Quantum key distribution in the Holevo limit.

¹Departamento de Física Aplicada II, Universidad de Sevilla, 41012 Sevilla, Spain. adan@cica.es

Physical Review Letters

|January 3, 2001

Summary

Quantum key distribution protocols can achieve maximum efficiency (E=1) by distributing secret bits across multiple qubits. This forces eavesdroppers to access qubits sequentially, enabling secure communication.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Experimental Quantum Advantage in the Odd-Cycle Game.

Physical review letters·2025

Same author

Sulfur Interaction and Regeneration of CaMn<sub>0.775</sub>Ti<sub>0.125</sub>Mg<sub>0.1</sub>O<sub>2.9-δ</sub> Perovskite as Oxygen Carrier during Combustion of Sour Gas in a 500 W<sub>th</sub> Chemical Looping Combustion Unit.

Energy & fuels : an American Chemical Society journal·2023

Same author

Clinical, histopathological and ultrastructural features of human monkeypox infection in the 2022 outbreak: report of a case with immunohistochemistry for vaccinia virus.

Clinical and experimental dermatology·2023

Same author

Benefica chirurgia. A global surgery project focusing on hernia surgery.

The surgeon : journal of the Royal Colleges of Surgeons of Edinburgh and Ireland·2021

Same author

Antiretroviral treatment outcomes among late HIV presenters initiating treatment with integrase inhibitors or protease inhibitors.

HIV medicine·2020

Same author

Sustained State-Independent Quantum Contextual Correlations from a Single Ion.

Physical review letters·2018

Area of Science:

Quantum Information Science
Quantum Cryptography
Quantum Communication

Background:

Shannon and Holevo theorems bound quantum key distribution (QKD) efficiency (E) to E ≤ 1.
Achieving the theoretical limit of E = 1 in QKD remains a significant challenge.

Purpose of the Study:

To investigate the feasibility of achieving the maximum theoretical efficiency (E = 1) in quantum key distribution.
To present a practical QKD protocol that attains E = 1.

Main Methods:

The study explores a protocol based on sequential qubit access for the eavesdropper (Eve), as proposed by Goldenberg and Vaidman.
Secret bits are distributed across multiple qubits to limit Eve's information gain.

Main Results:

A quantum key distribution protocol is presented that demonstrably achieves an efficiency of E = 1.
The protocol utilizes polarized photons and linear optical elements for state discrimination.

Conclusions:

The theoretical limit of quantum key distribution efficiency (E = 1) is achievable.
Practical protocols can be designed to reach this limit, enhancing secure communication capabilities.

Related Experiment Videos