Suppose we have reason to suspect that a certain quantum object has only three quantum states. When we excite such an object we observe that it emits electromagnetic radiation of three different...

Suppose we have reason to suspect that a certain quantum object has only three quantum states. When we excite such an

object we observe that it emits electromagnetic radiation of three different energies: 2.48 eV (green), 1.91 eV (orange), and

0.57 eV (infrared).

(a) Propose two possible energy-level schemes for this system.

(b) Explain how to use an absorption measurement to distinguish between the two proposed schemes.