The results show that no squeezing exists for the selective fast atomic ionization and measurement, while for the slow atom, squeezing up to 25%can be obtained.

• 结果表明,对快原子进行选择电离和测量,腔场不存在压缩;而对慢原子进行选择性电离和测量,腔场存在压缩,最大压缩处压缩参量可达25%25。