On overall measure of non-classicality of $N$-level quantum system and its universality in the large $N$ limit

Autor: Abgaryan, Vahagn, Khvedelidze, Arsen, Rogojin, Ilya
Rok vydání: 2021
Předmět:
Zdroj: Lecture Notes in Computer Science, vol 12563 (2021)
Druh dokumentu: Working Paper
DOI: 10.1007/978-3-030-66471-8_20
Popis: In this report we are aiming at introducing a global measure of non-classicality of the state space of $N$-level quantum systems and estimating it in the limit of large $N$. For this purpose we employ the Wigner function negativity as a non-classicality criteria. Thus, the specific volume of the support of negative values of Wigner function is treated as a measure of non-classicality of an individual state. Assuming that the states of an $N$-level quantum system are distributed by Hilbert-Schmidt measure (Hilbert-Schmidt ensemble), we define the global measure as the average non-classicality of the individual states over the Hilbert-Schmidt ensemble. We present the numerical estimate of this quantity as a result of random generation of states, and prove a proposition claiming its exact value in the limit of $N\to \infty$
Databáze: arXiv