  In this theoretical manuscript I propose a scheme for entangling a single
electron semiconductor spin qubit with a single electron semiconductor charge
qubit in a triangular triple quantum dot configuration. Two out of three
quantum dots are used to define a single electron semiconductor charge qubit.
Furthermore, the spin qubit is embedded in the Zeeman sub-levels of the third
quantum dot. Combining single qubit gates with entangling CNOT gates allows one
to construct a SWAP gate, and therefore to use the semiconductor spin qubit as
a long-lived memory for the semiconductor charge qubit.
