Optimizing for an arbitrary perfect entangler. II. Application
Abstract
The difficulty of an optimization task in quantum information science depends on the proper mathematical expression of the physical target. Here we demonstrate the power of optimization functionals targeting an arbitrary perfect two-qubit entangler, creating a maximally-entangled state out of some initial product state. For two quantum information platforms of current interest, nitrogen vacancy centers in diamond and superconducting Josephson junctions, we show that an arbitrary perfect entangler can be reached faster and with higher fidelity than specific two-qubit gates or local equivalence classes of two-qubit gates. Our results are obtained with two independent optimization approaches, underlining the crucial role of the optimization target.
Cite
@article{arxiv.1412.7350,
title = {Optimizing for an arbitrary perfect entangler. II. Application},
author = {Michael H. Goerz and Giulia Gualdi and Daniel M. Reich and Christiane P. Koch and Felix Motzoi and K. Birgitta Whaley and Jiří Vala and Matthias M. Müller and Simone Montangero and Tommaso Calarco},
journal= {arXiv preprint arXiv:1412.7350},
year = {2015}
}