Quantum Fisher Information of Decohered W and GHZ Superposition States with Arbitrary Relative Phase

No Thumbnail Available

Date

2017

Journal Title

Journal ISSN

Volume Title

Publisher

Springer/plenum Publishers

Open Access Color

OpenAIRE Downloads

OpenAIRE Views

Research Projects

Organizational Units

Journal Issue

Abstract

Quantum Fisher Information (QFI) is a very useful concept for analyzing situations that require phase sensitivity. It become a popular topic especially in Quantum Metrology domain. In this work, we study the changes in quantum Fisher information (QFI) values for one relative arbitrary phased quantum system consisting of a superposition of N Qubits W and GHZ states. In a recent work (Ozaydin et al. Int. J. Theor. Phys. 52, 2977, 2013), QFI values of this mentioned system for N qubits were studied. In this work, we extend this problem for the changes of QFI values in some noisy channels for the studied system. We show the changes in QFI depending on noise parameters. We report interesting results for different type of decoherence channels. We show the general case results for this problem.

Description

Keywords

Quantum Fisher Information, Arbitrary phase, W state, GHZ state, Decoherence

Turkish CoHE Thesis Center URL

Fields of Science

Citation

2

WoS Q

Q3

Scopus Q

Q2

Source

Volume

56

Issue

10

Start Page

3202

End Page

3208