Tomography of time-bin quantum states using time-resolved detection
Quantum Physics
2020-11-26 v2
Abstract
We present a method for measuring quantum states encoded in the temporal modes of photons. The basis for the multilevel quantum states is defined by the use of modes propagating in a dispersive medium, which is a fiber in this case. The propagation and time-resolved single photon detection allow us to define a positive-operator valued measure (POVM). The POVM depends on the amount of dispersion and the characteristics of a detector. This framework is numerically tested by performing quantum state tomography on a large number of states for a set of realistic experimental settings. Finally, the average fidelity between the expected and reconstructed states is computed for qubits, qutrits and entangled qubits.
Cite
@article{arxiv.2003.11981,
title = {Tomography of time-bin quantum states using time-resolved detection},
author = {Karolina Sedziak-Kacprowicz and Artur Czerwinski and Piotr Kolenderski},
journal= {arXiv preprint arXiv:2003.11981},
year = {2020}
}