ScholarLens Back to search
2002•Journal of Optics B Quantum and Semiclassical OpticsOpen access

Improved discrimination of unitary transformations by entangled probes

G. M. D Ariano, Paoloplacido Lo Presti, Matteo G. A. Paris

Open full text 28 citations

Abstract

We consider the problem of discriminating among a set of unitary transformations by means of measurements performed on the state undergoing the transformation. We show that the use of entangled probes improves the discrimination in the following two cases: (i) for a set of unitaries that are the unitary irreducible representation of a group; and (ii) for any pair of transformations provided that multiple uses of the channel are allowed.

Open-access reader

About this research paper

What this paper is about

We consider the problem of discriminating among a set of unitary transformations by means of measurements performed on the state undergoing the transformation. We show that the use of entangled probes improves the discrimination in the following two cases: (i) for a set of unitaries that are the unitary irreducible representation of a group; and (ii) for any pair of transformations provided that multiple uses of the channel are allowed.

Why it matters

OpenAlex reports 28 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

We consider the problem of discriminating among a set of unitary transformations by means of measurements performed on the state undergoing the transformation. We show that the use of entangled probes improves the discrimination in the following two cases: (i) for a set of unitaries that are the unitary irreducible representation of a group; and (ii) for any pair of transformations provided that multiple uses of the channel are allowed.

Key concepts: Unitary state, Unitary transformation, Transformation (genetics), Set (abstract data type), Representation (politics), State (computer science), Unitary representation, Irreducible representation

Related papers

Related paper 1Related paper 2
Back to paper searchBrowse research topicsOriginal source
Improved discrimination of unitary transformations by entangled probes — Research Paper | ScholarLens