A memory is capable of storing coupled qubits. The memory includes a plurality of memory cells, wherein each of the memory cells is for storing values of one of the qubits. The memory also includes an electronic controller electrically connected to operate said memory cells. The controller is able to selectively store a qubit value to any of the memory cells in either a first state or a second state. The controller is configured to read any one of the memory cells in a manner dependent on whether the first state or the second state was previously used to store a qubit value in the same one of the memory cells.