  Secret sharing schemes for classical secrets can be classified into classical
secret sharing schemes and quantum secret sharing schemes. Classical secret
sharing has been known to be able to distribute some shares before a given
secret. On the other hand, quantum mechanics extends the capabilities of secret
sharing beyond those of classical secret sharing. We propose quantum secret
sharing with the capabilities in designing of access structures more flexibly
and realizing higher efficiency beyond those of classical secret sharing, that
can distribute some shares before a given secret.
