A cut to the chase approach to controlled nuclear fusion.

OK, we all know how impossibly complex electromagnetic confinement and electrostatic confinement approaches to controlled nuclear fusion are. Good steady work, of course, because the problems never get solved. But, we've had H-bombs since 1952. And, the core of the H-bomb is a small A-bomb. Now, actually, we have had quite small A-bombs since the late 1950's, as well. Indeed, we can build an A-bomb with a yield of just 10 tons of TNT. https://en.wikipedia.org/wiki/W54 This would suggest the possibility of an H-bomb with a yield of perhaps a single kiloton, or so. Would there be any possibility, whatsoever, of "harnassing", in any way whatsoever, that wasn't purely destructive, a bomb yield of a thousand tons of TNT? That is, could a spacecraft employ such an explosive yield as a form of thrust, for example?