Quantum spin-flipping by the Faraday mirror

Autor:	Veronica Secondi, F. De Martini, Fabio Sciarrino
Rok vydání:	2004
Předmět:	Physics Open quantum system Photon Quantum error correction Quantum mechanics Qubit Quantum process Quantum simulator Quantum tomography Quantum information Atomic and Molecular Physics and Optics
Zdroj:	Physical Review A. 70
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.70.040301
Popis:	The paper gives a thorough analysis of the spin-flipping action induced by the Faraday mirror on any qubit realized by a polarization-encoded single photon. The results of the theory show that the device acts as a nonuniversal NOT gate, in full agreement with quantum mechanical expectations. Furthermore, the universal optical compensation method devised by Martinelli, of common use in long distance quantum-cryptography, has been analyzed. All theoretical results are substantiated experimentally by the modern methods of quantum state tomography and entanglement-assisted quantum process tomography.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8635e999f29a2a07c0ddd1f85234a6ff https://doi.org/10.1103/physreva.70.040301 Zobrazit plný text záznamu