【量子光学】 Quantum Optics 1 Quiz 1.2.2(4)

Quantum Optics 1课程第四次测验

第1题 (单选)

The energy of an eigenvector of the harmonic oscillator Hamiltonian is of the form $E_n=\hbar \omega(n+\frac{1}{2})$ where $n$ is positive integer.
In this expression, the energy $E=0$ (energy origin) corresponds to :

A) The energy of the ground state.

B) The potential energy at the bottom of the potential ($x=0$).

第2题 (单选)

Is the following statement correct (yes) or not correct (no) ?
The vector $\hat{a}\left|0\right\rangle$ has a norm of 0?

A) Yes

B) No

第3题 (单选)

Which expression is right?

A) $\left\langle 0\right|\hat{a}=0$

B) $\left\langle 0\right|\hat{a}^\dagger=0$

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