Work

Direct measurement methods of density matrix of an entangled quantum state

Year: 2020

Type: article

Abstract: In general, the state of a quantum system represented by the density operator and its determination is a fundamental problem in quantum theory. In this study, two theoretical methods such as using postselected measurement characterized by modular value and sequential measurements of triple products of complementary observables to direct measurement of matrix elements of density operator of a two photon entangled quantum state are introduced. The similarity and possible feasibilities of those two methods are discussed by considering the previous theoretical and experimental works.

Source: Journal of Physics Communications

DOI: 10.1088/2399-6528/ab9938

Author: Yusuf Turek

Institution: Xinjiang Normal University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,880

Funder: National Natural Science Foundation of China