If you get certified as your wife's caretaker I believe so. I'm not 100% on how it works, but I think you need to contact your department of human services and take some classes on how to care for the disabled. Then the government will pay you to care for your wife.
I think this only works after your wife has been approved to have a caretaker come to, or live in, the home and take care of her. So, basically you'd be doing the work and getting the pay that the outside caretaker would otherwise be getting.
Also, once you take and pass the classes, you'd be able to get paid to take care of other disabled people as well. I had a friend in college who was a househusband in married housing while his wife went to school. He took those classes and started doing laundry, dishes, etc for a guy in a wheelchair right across from his apartment and got paid like $14 an hour. And that was fifteen years ago.