A quantum computation scheme based on encoding qubits as coherent states of equal absolute amplitude but opposite sign is presented. The optical networks required to manipulate the qubits are conceptually simple and require only linear interactions and photon counting, provided coherent superpositioin ancilla states are available. It is shown that qubits with amplitude |α|=2 and resource cat states of amplitude |α|=√6 would be sufficient.
|Number of pages||11|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Issue number||4 A|
|Publication status||Published - Oct 2003|