Combined table lookup at quantum computing device

A quantum computing device comprising:

• a table lookup circuit configured to:
• receive a plurality of table lookup inputs that each include a respective plurality of table lookup input qubits;
• receive a control qubit state;
• and
• perform a respective plurality of table lookup operations on the plurality of table lookup inputs in parallel such that a respective plurality of table lookup outputs of the plurality of table lookup operations are logically interleaved within a combined output register, wherein a plurality of table lookup output qubits included in the plurality of table lookup outputs are configured to be written to the combined output register via respective outputs of a plurality of controlled exclusive or (CXOR) gates configured to receive the control qubit state.