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Article
Quantum Discord and Entanglement Distribution as the Flow of Correlations Through a Dissipative Quantum System
In this paper, we study the propagation of quantum correlations in open quantum systems using quantum discord as their measure. The role of system–environment correlations in discord dynamics and some operatio...
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Article
Continuous-variable quantum key distribution using polarization encoding and post selection
We present an experimental demonstration of a quantum key distribution protocol using coherent polarization states. Post selection is used to ensure a low error rate and security against beam-splitting attacks...
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Chapter and Conference Paper
Quantum interferometry with fiber solitons — a direct experimental test of non-separability
We present a scheme for a direct experimental test of non-separability of a quantum state of two intense optical beams. On this basis, new entanglement-based quantum interferometry schemes using fiber solitons...
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Chapter
Quantum Solitons in Optical Fibres: Basic Requisites for Experimental Quantum Communication
Continuous variable quantum entanglement emerges from nonlinear interactions of: fibre optical solitons in combination with some linear operation. We describe the detection and characterization of bright EPR-e...
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Article
Direct experimental test of non-separability and other quantum techniques using continuous variables of light
We present schemes for the generation and evaluation of continuous variable entanglement of bright optical beams and give a brief overview of a variety of optical techniques and quantum communication applicati...
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Chapter
Bright EPR-Entangled Beams for Quantum Communication
Bright Einstein-Podolsky-Rosen (EPR) entanglement is obtained in linear interference of two amplitude-squeezed beams produced in Kerr nonlinear interactions. The correlation of the amplitude (phase) quadrature...
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Article
Squeezed light from microstructured fibres: towards free-space quantum cryptography
Amplitude-squeezed pulsed light has been produced using a microstructured silica fibre. By spectrally filtering after the non-linear propagation in the fibre a squeezing value of -1.7 dB has been measured. A q...
