Delayed-choice quantum cryptography

Evan Jeffrey, Paul Kwiat

Research output: Contribution to conferencePaper

Abstract

In the standard protocol, the maximum possible efficiency was 50%. This inefficiency could be eliminated by storing photons until the correct basis allows to measure the photons correctly 100% of the time, while preventing information from being used maliciously. This increases the effective data rate of the standard BB84 protocol considerably, and makes six-state protocols practical alternatives. This paper presents a delayed-choice quantum cryptography where a novel protocol, incorporating an optical storage system, achieves substantially higher effective data rates for quantum key distribution.

Original languageEnglish (US)
PagesQTuG8/1-QTuG8/2
StatePublished - Dec 1 2003
EventTrends in Optics and Photonics Series: Quantum electronics and Laser Science (QELS) - Baltimore, MD., United States
Duration: Jun 1 2003Jun 6 2003

Other

OtherTrends in Optics and Photonics Series: Quantum electronics and Laser Science (QELS)
CountryUnited States
CityBaltimore, MD.
Period6/1/036/6/03

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Jeffrey, E., & Kwiat, P. (2003). Delayed-choice quantum cryptography. QTuG8/1-QTuG8/2. Paper presented at Trends in Optics and Photonics Series: Quantum electronics and Laser Science (QELS), Baltimore, MD., United States.