【量子光学】 Quantum Optics 2 Quiz 1.6(1)

Quantum Optics 2课程第一次测验

第1题 (单选)

We consider a beam splitter with a quasi-classical state $\left|\alpha\right\rangle_1$ in input mode 1 and another quasi-classical state $\left|\beta\right\rangle_2$ in input mode 2.
Do the full calculation of the output mode and select the right answer among the following proposals:

A) $\left|r\alpha-t\beta\right\rangle_3\left|t\alpha+r\beta\right\rangle_4$

B) $-\left|r\alpha+t\beta\right\rangle_3\left|t\alpha-r\beta\right\rangle_4$

C) $\left|r\alpha+t\beta\right\rangle_3\left|t\alpha-r\beta\right\rangle_4$

D) The output mode can be predicted only if $\Re\left[\alpha\beta^*\right]=0.$

第2题 (单选)

In that case, are the amplitudes in the two output modes the same than what they would be for classical fields?

A) Yes

B) No

第3题 (不定项选择)

What differentiates the field described by a quasi-classical state $\left|\alpha_\ell\right\rangle$ from a classical field $E_\ell\left(r,t\right)=-2\vec{\epsilon}_\ell\left|\alpha_\ell\right|\epsilon_\ell^{(1)}\sin\left(k_\ell r-\omega_\ell t+\phi_\ell\right)$?

A) The mean energy in the quantization volume.

B) The dispersion of the energy in the quantization volume.

C) The single photo-detection signal.

D) The double photo-detection signal.

第4题 (不定项选择)

What differentiates a quasi-classical state with $\left|\alpha_\ell\right\rangle$ from a one-photon state?

A) The mean photon number.

B) The dispersion of the photon number.

C) The single photo-detection signal.

D) The double photo-detection signal.

补全下方信息(禁止使用符号‘#’，‘/’)，点击Submit Answer按钮提交答案。
姓名(英语/拼音)：

邮箱(手机/其他)：

备注(英语/不填)：

Submit Answer

---提交后等待口令，若无需刷新后重新提交！---

任何问题请联系：email:happyan@piphipsi.com