Work

Coherent-state optical qudit cluster state generation and teleportation via homodyne detection

Year: 2014

Type: article

Abstract: Defining a computational basis of pseudo-number states, we interpret a coherent state of large amplitude, |α|⪢d/2π, as a qudit — a d-level quantum system — that is an even (meaning same size of amplitudes) superposition of d pseudo-number basis states. A pair of such coherent-state qudits can be maximally entangled by generalized Controlled-Z operation that is based on cross-Kerr nonlinearity, which can be weak for large d. Hence, a coherent-state optical qudit cluster state can be prepared by repetitive application of the generalized Controlled-Z operation to a set of coherent states. We thus propose an optical qudit teleportation as a simple demonstration of cluster state quantum computation.

Source: Optics Communications

DOI: 10.1016/j.optcom.2014.07.016

Authors: Jaewan Kim, Juhui Lee, Se-Wan Ji, Hyunchul Nha, Petr M. Anisimov, Jonathan P. Dowling

Institutions: Korea Institute for Advanced Study, Texas A&M University at Qatar, Louisiana State University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,600