Journal ArticleDOI
Quantum cryptography based on Bell's theorem.
TLDR
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported, based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment andBells theorem is used to test for eavesdropping.Abstract:
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment and Bells theorem is used to test for eavesdropping. © 1991 The American Physical Society.read more
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Book ChapterDOI
Engineering Nonlinear Optic Sources of Photonic Entanglement
TL;DR: In this paper, a quantum description of propagating-wave nonlinear optics is reviewed, and the formalism is applied to the common nonlinear optical processes that are used in quantum optics: spontaneous parametric downconversion and four-wave mixing.
BookDOI
Quantum Theory: Informational Foundations and Foils
TL;DR: In this article, the authors provide a unified overview of the emerging research area at the interface between Quantum Foundations and Quantum Information, including operational alternatives to quantum theory, information-theoretic reconstructions of the quantum formalism, mathematical frameworks for operational theories, and device-independent features of the set of quantum correlations.
Journal ArticleDOI
Error-detected generation and complete analysis of hyperentangled Bell states for photons assisted by quantum-dot spins in double-sided optical microcavities
TL;DR: An error-detected block is constructed, assisted by the quantum-dot spins in double-sided optical microcavities, for the deterministic generation, the complete analysis, and the complete nondestructive analysis of hyperentangled Bell states in both the polarization and spatial-mode degrees of freedom of two-photon systems.
Journal ArticleDOI
A 24 km fiber-based discretely signaled continuous variable quantum key distribution system
TL;DR: In this paper, the authors report a continuous variable key distribution system that achieves a final secure key rate of 3.45 kilobits/s over a distance of 24.2 km of optical fiber.
Journal ArticleDOI
Single Quantum Dot with Microlens and 3D-Printed Micro-objective as Integrated Bright Single-Photon Source
Sarah Fischbach,Alexander Schlehahn,Alexander Thoma,Nicole Srocka,Timo Gissibl,Simon Ristok,Simon Thiele,Arsenty Kaganskiy,André Strittmatter,Tobias Heindel,Sven Rodt,Alois Herkommer,Harald Giessen,Stephan Reitzenstein +13 more
TL;DR: A bright single-photon source realized by on-chip integration of a deterministic quantum dot microlens with a 3D-printed multilens micro-objective to highlight the opportunities that arise from tailoring the optical properties of quantum emitters using integrated optics.