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

abstract

• 2014 The Authors. Defining a computational basis of pseudo-number states, we interpret a coherent state of large amplitude, ||d/2, 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.

authors

• Nha, Hyunchul

published proceedings

• OPTICS COMMUNICATIONS

author list (cited authors)

• Kim, J., Lee, J., Ji, S., Nha, H., Anisimov, P. M., & Dowling, J. P.

citation count

• 21

complete list of authors

• Kim, Jaewan||Lee, Juhui||Ji, Se-Wan||Nha, Hyunchul||Anisimov, Petr M||Dowling, Jonathan P

publication date

• February 2015

publisher

• Elsevier  Publisher

published in

• Optics Communications  Journal

keywords

• Cluster State
• Cross-kerr
• Qudit
• Teleportation

Digital Object Identifier (DOI)

• 10.1016/j.optcom.2014.07.016

start page

• 79

end page

• 82

volume

• 337

URL

• http://dx.doi.org/10.1016/j.optcom.2014.07.016