https://doi.org/10.1140/epjp/s13360-022-02441-z
Regular Article
Amplitude-squared squeezing of Schrödinger cat states via postselected von Neumann measurement
School of Physics and Electronic Engineering, Xinjiang Normal University, 830054, Urumqi, Xinjiang, China
Received:
16
September
2021
Accepted:
1
February
2022
Published online:
10
February
2022
We know that the original Schrödinger cat states have no amplitude-squared squeezing. In this paper, we investigate the amplitude-squared squeezing of Schrödinger cat states using postselected von Neumann measurement. The results show that after postselected von Neumann measurement, the amplitude-squared squeezing of Schrödinger cat states change dramatically and this can be considered a result of weak value amplification. The squeezing effect also investigated by studying the Wigner function of Schrödinger cat states after postselected measurement.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
