Publication Date:
2013-09-21
Description:
Author(s): Pierre Alquier, Cristina Butucea, Mohamed Hebiri, Katia Meziani, and Tomoyuki Morimae We introduce a method to reconstruct the density matrix ρ of a system of n qubits and estimate its rank d from data obtained by quantum-state-tomography measurements repeated m times. The procedure consists of minimizing the risk of a linear estimator ρ ̂ of ρ penalized by a given rank (from 1 to 2 n )... [Phys. Rev. A 88, 032113] Published Fri Sep 20, 2013
Keywords:
Fundamental concepts
Print ISSN:
1050-2947
Electronic ISSN:
1094-1622
Topics:
Physics