Programmable quantum-state discriminator by nuclear magnetic resonance

Gopinath, T. ; Das, Ranabir ; Anil Kumar, (2004) Programmable quantum-state discriminator by nuclear magnetic resonance Physical Review A, 71 (4). 042307_1-042307_8. ISSN 1050-2947

Full text not available from this repository.

Official URL:

Related URL:


A programmable quantum-state discriminator is implemented by using nuclear magnetic resonance. We use a two-qubit spin-1/2 system, one for the data qubit and one for the ancilla (program) qubit. This device does the unambiguous (error-free) discrimination of a pair of states of the data qubit that are symmetrically located about a fixed state. The device is used to discriminate both linearly polarized states and elliptically polarized states. The maximum probability of successful discrimination is achieved by suitably preparing the ancilla qubit. It is also shown that the probability of discrimination depends on the angle of the unitary operator of the protocol and ellipticity of the data qubit state.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:686
Deposited On:23 Sep 2010 10:10
Last Modified:12 May 2011 08:39

Repository Staff Only: item control page