We introduce a modular-value two-qubit gate and explore its advantages in experimentally limited situations. The gate is defined such that the final state of a qubit is fully controlled by a pre- and postselection procedure in an ancillary qubit given an (imperfect or technically limited) intermediate conditional qubit–qubit interaction. As an example of the gate and its benefit, we make the connection to a postselected cross-phase modulation scenario when a undesired absorption is present. Probabilistic amplification of a small cross phase while mitigating relative absorption is possible, and a complementary behavior between phase and amplitude emerges.
Quantum Information Processing – Springer Journals
Published: Dec 28, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud