Magnon squeezing in an antiferromagnet: reducing the spin noise below the standard quantum limit |
| |
| Authors: | Zhao Jimin Bragas A V Lockwood D J Merlin R |
| |
| Institution: | Focus Center and Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109-1120, USA. |
| |
| Abstract: | We report the first experimental demonstration of quantum squeezing of a collective spin-wave excitation (magnon) using femtosecond optical pulses to generate correlations involving pairs of spins in an antiferromagnetic insulator MnF2. In the squeezed state, the fluctuations of the magnetization of a crystallographic unit cell vary periodically in time and are reduced below that of the ground-state quantum noise. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
