It’s not necessary to bring quantum physics into it. Isomorphic consciousness-structures have the same experience (else they wouldn’t be isomorphic, since we make their experience part of them). The me up to the point of waking up tomorrow (or the point of my apparent death) is a such a structure (with no canonical language unfortunately; there are infinitely many that suffice), and so it has an elementary class, the structures that elementarily extend it, in particular that extend its experience past tomorrow morning.
It’s not necessary to bring quantum physics into it. Isomorphic consciousness-structures have the same experience (else they wouldn’t be isomorphic, since we make their experience part of them). The me up to the point of waking up tomorrow (or the point of my apparent death) is a such a structure (with no canonical language unfortunately; there are infinitely many that suffice), and so it has an elementary class, the structures that elementarily extend it, in particular that extend its experience past tomorrow morning.