Manipulating biphotonic qutrits

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

doi:10.1103/PhysRevLett.100.060504

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 journal › Article

103 Citations (Scopus)

Abstract

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 language	English
Article number	060504
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review Letters
Volume	100
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.100.060504
Publication status	Published - 14 Feb 2008
Externally published	Yes

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10.1103/PhysRevLett.100.060504

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AU - Weinhold, T. J.

AU - Langford, N. K.

AU - O'Brien, J. L.

AU - Resch, K. J.

AU - Gilchrist, A.

AU - White, A. G.

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