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

abstract

  • © 2014 The Authors. 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.

published proceedings

  • Optics Communications

author list (cited authors)

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

citation count

  • 19

complete list of authors

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

publication date

  • February 2015