Matteo Fadel

Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles

2021 · arXiv (Cornell University)

We present a method to detect bipartite entanglement based on number-phase-like uncertainty relations in split spin ensembles. First, we derive an uncertainty relation that plays the role of a number-phase uncertainty for spin systems. It …

Assisted metrology and preparation of macroscopic superpositions with split spin-squeezed states

2023 · arXiv (Cornell University)

We analyse the conditional states in which one part of a split spin-squeezed state is left, upon performing a collective spin measurement on the other part. For appropriate measurement directions and outcomes, we see the …