document: Quantum phase gate for photonic qubits using only beam splitters and postselection We show that a beam splitter of reflectivity one-third can be used to realize a quantum phase gate operation if only the outputs conserving the number of photons on each side are postselected
doc_bio_tags: B I I O B I O O O O O B O O O O O O O B O O O O O O O B I I O O O O B O O O O O O O O O O
extractive_keyphrases: quantum phase gate photonic qubits postselection reflectivity outputs
abstractive_keyphrases: multiqubit networks postselected quantum gate optical quantum gate operations quantum phase gate operation photon number conservation postselected photon number conserving outputs quantum computation quantum information processing postselected quantum phase gate polarization beam splitters