Deterministic Controlled-NOT gate for single-photon two-qubit quantum logic

We demonstrate a robust implementation of a deterministic linear-optical Controlled-NOT (CNOT) gate for single-photon two-qubit quantum logic. A polarization Sagnac interferometer with an embedded 45$^{\circ}$-oriented dove prism is used to enable the polarization control qubit to act on the momentum (spatial) target qubit of the same photon. The CNOT gate requires no active stabilization because the two spatial modes share a common path, and it is used to entangle the polarization and momentum qubits.Comment: 10 pages, 4 figures. Typos corrected, referee comments and correction

October 7, 1992

This paper reports the findings of a research aimed at validating the test on narrative models; this test was developed by M. Piccinno in 2005 with the aim of identifying the narrative model through which the person relatesto himself and to others their life story.The purpose of this research is to continue in the process of validation of the constructs and test items of Piccinno, through a process of analysis focuses on three different testing procedures. The first of them, consists in the analysis factorial conducted on the results produced by the test in question on a group of 500 adolescents. The second step is to submit to the test of Cronbach theresults obtained from the factor analysis. Finally, we will proceed to calculate the indices of correlation between the scores on the test items and scores of “Zimbardo Time Perspective Inventory” (1999).Il presente saggio riporta le conclusioni di una ricerca finalizzata all’avvio delle prove di validazione di un test sui modelli narrativi; tale test è stato elaborato da M. Piccinno nel 2005 con lo scopo di individuare la modalità narrativa attraverso la quale il soggetto racconta a sé stesso e agli altri la propria storiadi vita. Lo scopo della presente ricerca è quello di proseguire nelle procedure di validazione dei costrutti e degli item del test di Piccinno, attraverso un percorso di analisi focalizzato su tre diverse procedure di verifica. La prima di esse consiste nell’analisi fattoriale condotta sui risultati prodotti dal test in esame su un gruppo di 500 adolescenti. La seconda operazione consiste nel sottoporreal test di Cronbach i risultati ricavati dall’analisi fattoriale. Infine, si procederà a calcolare gli indici di correlazione tra i punteggi relativi agli item del test in esame e i punteggi dello “Zimbardo Time Perspective Inventory” (1999)

Devices and architectures for large scale integrated silicon photonics circuits

We present DWDM nanophotonics architectures based on microring resonator modulators and detectors. We focus on two implementations: an on chip interconnect for multicore processor (Corona) and a high radix network switch (HyperX). Based on the requirements of these applications we discuss the key constraints on the photonic circuits' devices and fabrication techniques as well as strategies to improve their performance

Reflective silicon binary diffraction grating for visible wavelengths

We introduce a new device based on sub-wavelength resonant gratings. We built a silicon-on-oxide reflective binary grating for visible light that mimics the functionality of a blazed diffraction grating in a flat geometry

Introduction to the Photonic Networks and Devices (NETWORKS) Special Issue

This special issue comprises extended versions of some of the top-scored papers that were presented at the OSA Photonic Networks and Devices (NETWORKS) meeting that was part of the OSA Advanced Photonics Congress held in Burlingame, California, USA, July 29–August 1, 2019. Here, we highlight relevant topics from included papers relating to photonic communication network development