An application of quantum cloning to optimally interface a quantum system with a classical observer is presented; in particular, we describe a procedure to perform a minimal disturbance measurement on a single qubit by adopting a 1 -> 2 cloning machine followed by a generalized measurement on a single clone and the anticlone or on the two clones. Such a scheme can be applied to enhance the transmission fidelity over a lossy quantum channel.
Separating the classical and quantum information via quantum cloning / Marco, Ricci; Sciarrino, Fabio; N. J., Cerf; R., Filip; J., Fiurasek; DE MARTINI, Francesco. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 95:9(2005), pp. 090504-1-090504-4. [10.1103/physrevlett.95.090504]
Separating the classical and quantum information via quantum cloning
SCIARRINO, Fabio;DE MARTINI, Francesco
2005
Abstract
An application of quantum cloning to optimally interface a quantum system with a classical observer is presented; in particular, we describe a procedure to perform a minimal disturbance measurement on a single qubit by adopting a 1 -> 2 cloning machine followed by a generalized measurement on a single clone and the anticlone or on the two clones. Such a scheme can be applied to enhance the transmission fidelity over a lossy quantum channel.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
