## Abstract We consider a quantum system that is prepared, with a given a priori probability, in a pure state that belongs to a known set of __N__ nonorthogonal quantum states. We study a minimumβerror measurement for assigning the state of the system to one or the other of two complementary subset
A Minimum-Disturbing Quantum State Discriminator
β Scribed by Francesco Buscemi; Massimiliano F. Sacchi
- Book ID
- 106488668
- Publisher
- World Scientific Publishing Company
- Year
- 2007
- Tongue
- English
- Weight
- 220 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1230-1612
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Quantum theory restricts our ability to determine the state of a physical system. This is true even if we know for certain that it was prepared in one of a known set of possible states. I describe two types of optimal strategy for state discrimination. These are (i) state discrimination with minimum
## Abstract Unambiguous discrimination among nonorthogonal but linearly independent quantum states is possible with a certain probability of success. Here, we consider a new variant of that problem. Instead of discriminating among all of the __N__ different states, we now ask for less. We want to u
Let \(\|\) be a von Neumann algebra with normal states \(\varphi\) and \(\omega\), and let \(x_{1}: \alpha_{1} \rightarrow . / /\) be a net of positive unital mappings of finite dimensional algebras. The paper studies the existence of a net \(\beta_{i}: \mathscr{U} \rightarrow . \alpha_{i}\) such th