We introduce the concept of cloning for classes of observables and classify cloning machines for qubit systems according to the number of parameters needed to describe the class under investigation. A no-cloning theorem for observables is derived and the connections between cloning of observables and joint measurements of noncommuting observables are elucidated. Relationships with cloning of states and non-demolition measurements are also analysed.
|Number of pages||10|
|Journal||Journal Of Physics A-mathematical And General|
|Publication status||Published - 07 Apr 2006|
- QUANTUM CLONING