Manipulating biphotonic qutrits

B. P. Lanyon, T. J. Weinhold, N. K. Langford, J. L. O'Brien, K. J. Resch, A. Gilchrist, A. G. White

Research output: Contribution to journalArticlepeer-review

139 Citations (Scopus)
18 Downloads (Pure)


Quantum information carriers with higher dimension than the canonical qubit offer significant advantages. However, manipulating such systems is extremely difficult. We show how measurement-induced nonlinearities can dramatically extend the range of possible transforms on biphotonic qutrits-three-level quantum systems formed by the polarization of two photons in the same spatiotemporal mode. We fully characterize the biphoton-photon entanglement that underpins our technique, thereby realizing the first instance of qubit-qutrit entanglement. We discuss an extension of our technique to generate qutrit-qutrit entanglement and to manipulate any bosonic encoding of quantum information.

Original languageEnglish
Article number060504
JournalPhysical Review Letters
Issue number6
Publication statusPublished - 14 Feb 2008
Externally publishedYes


Dive into the research topics of 'Manipulating biphotonic qutrits'. Together they form a unique fingerprint.

Cite this