It is not physically possible to pay down a deficit. It is only possible to pay down a debt. The only way a debt can be paid down is to stop borrowing. The only way to stop borrowing is to have NO deficit!
Talk of reducing the deficit is meaningless. As long as there is any deficit at all, the debt grows, making ultimate financial collapse inevitable. Delaying the collapse does nothing to prevent the collapse. The concepts are not really even related.