Optimizing for an arbitrary perfect entangler. II. Application
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-06-08 |
| Journal | Physical Review A |
| Authors | Michael H. Goerz, Giulia Gualdi, Daniel M. Reich, Christiane P. Koch, Felix Motzoi |
| Institutions | UniversitƤt Ulm, University of California, Berkeley |
| Citations | 48 |
Abstract
Section titled āAbstractāThe difficulty of an optimization task in quantum information science depends on the proper mathematical expression of the physical target. In this paper we demonstrate the power of optimization functionals targeting an arbitrary perfect two-qubit entangler, which allow generation of a maximally entangled state from some initial product state. We show for two quantum information platforms of current interest, i.e., nitrogen vacancy centers in diamond and superconducting Josephson junctions, that an arbitrary perfect entangler can be reached faster and with higher fidelity than both specific two-qubit gates and local equivalence classes of two-qubit gates. Our results are obtained using two independent optimization approaches, underscoring the critical role of the optimization target.