How do I get these toggles in my notification bar?
These toggles aren't part of Android. Third party ROMs like CyanogenMod and MIUI, and certain skins that Hardware manufacturers put on Android include that.

If you want to have this functionality on a Nexus running stock Android you might want to try these two applications, I have used them both, and they are quite stable and useful.

Power Toggles : 
https://play.google.com/store/apps/details?id=com.painless.pc

More Quickly Panel: 
https://play.google.com/store/apps/details?id=com.mabware.android.MoreQuicklyPanel