Quantum Key Distribution Overcoming Extreme Noise: Simultaneous Subspace Coding Using High-Dimensional Entanglement

DODA, M., M. HUBER, G. MURTA, Matej PIVOLUSKA, Martin PLESCH and C. VLACHOU. Quantum Key Distribution Overcoming Extreme Noise: Simultaneous Subspace Coding Using High-Dimensional Entanglement. PHYSICAL REVIEW APPLIED. COLLEGE PK: AMER PHYSICAL SOC, 2021, vol. 15, No 3, p. 034003-34017. ISSN 2331-7019. Available from: https://dx.doi.org/10.1103/PhysRevApplied.15.034003.

Basic information

• Original name: Quantum Key Distribution Overcoming Extreme Noise: Simultaneous Subspace Coding Using High-Dimensional Entanglement
• Authors: DODA, M., M. HUBER, G. MURTA, Matej PIVOLUSKA (703 Slovakia, guarantor, belonging to the institution), Martin PLESCH (703 Slovakia, belonging to the institution) and C. VLACHOU.
• Edition: PHYSICAL REVIEW APPLIED, COLLEGE PK, AMER PHYSICAL SOC, 2021, 2331-7019.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10201 Computer sciences, information science, bioinformatics
• Country of publisher: United States of America
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 4.931
• RIV identification code: RIV/00216224:14610/21:00121422
• Organization unit: Institute of Computer Science
• Doi: http://dx.doi.org/10.1103/PhysRevApplied.15.034003
• UT WoS: 000632394300001
• Keywords in English: quantum key distribution; qudits
• Tags: J-D1, J-Q1, rivok
• Tags: International impact, Reviewed

Abstract

High-dimensional entanglement promises to increase the information capacity of photons and is now routinely generated, exploiting spatiotemporal degrees of freedom of single photons. A curious feature of these systems is the possibility of certifying entanglement despite strong noise in the data. We show that it is also possible to exploit this noisy high-dimensional entanglement for quantum key distribution by introducing a protocol that uses multiple subspaces of the high-dimensional system simultaneously. Our protocol can be used to establish a secret key even in extremely noisy experimental conditions, where qubit protocols fail. To show that, we analyze the performance of our protocol for noise models that apply to the two most commonly used sources of high-dimensional entanglement: time bins and spatial modes.

Links

• MUNI/G/1596/2019, interní kód MU: Name: Development of algorithms for application of quantum computers in electronic-structure calculations in solid-state physics and chemistry (Acronym: Qubits4PhysChem)

Investor: Masaryk University, INTERDISCIPLINARY - Interdisciplinary research projects