Effect of Laser on Squeezed States of Magnon
-
摘要: 壓縮態的量子起伏低于相干態相應的量子起伏.同聲子和光子比較,自旋波的元激發——磁振子,也屬于玻色子;在粒子數表像中,磁振子的哈密頓量在形式上與光子和聲子的哈密頓量相似,因而磁振子的壓縮態是可能存在的.通過測量在激光場下自旋分量的量子漲落,可以獲得材料的性能參數.Abstract: A squeezed state of phonons and photons may have less quantum fluctuation than a coherent state. Compared to phonons or photons, the elementary excitations of the spin waves-magnons, are also bosons. Their Hamiltonian in a particle-number representation is similar to that of phonons or photons, and thus the squeezed state of magnons is possible to exist. The parameters characterizing the properties of materials can be calculated by measuring the quantum fluctuation of spin components in the laser field.
-
Key words:
- squeezed state /
- coherent state /
- magnon /
- spin wave
-
點擊查看大圖
計量
- 文章訪問數: 150
- HTML全文瀏覽量: 29
- PDF下載量: 10
- 被引次數: 0
下載:
