Generalized overlap quantum state tomography1
Rajveer Nehra, Miller Eaton, Carlos González-Arciniegas, M. S. Kim, Thomas Gerrits, Adriana Lita, Sae Woo Nam, Olivier Pfister · Physical Review Research · 2020
We propose and experimentally demonstrate a quantum state tomography protocol that generalizes and improves upon the Wallentowitz-Vogel-Banaszek-Wódkiewicz point-by-point Wigner function reconstruction.The full density operator of an arbitrary quantum state is efficiently reconstructed in the Fock basis, using semidefinite programming, after interference with a small set of calibrated coherent states.This protocol is resource-and computationally efficient, is robust against noise, does not rely on approximate state displacements, and ensures the physicality of results.