Quantum tasks using six qubit cluster states

  • Authors:

  • Naveen Paul;Jayakrishnan V. Menon;Siddharth Karumanchi;Sreraman Muralidharan;Prasanta K. Panigrahi

  • Affiliations:

  • Mphasis an HP Company, DLF SEZ IT Park, Porur, Chennai, India 600089;Christ University, Bangalore, India 560029;Birla Institute of Technology and Science, Pilani, India;School of EPS, Heriot-Watt University, Edinburgh, UK EH14 4AS;Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Mohanpur, India 741252 and Physical Research Laboratory, Ahmedabad, India 380 009

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2011

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Abstract

The usefulness of the recent experimentally realized six photon cluster state by C. Y. Lu et al. (Nature 3:91, 2007) is investigated for quantum communication protocols like quantum teleportation and quantum information splitting (QIS) and dense coding. We show that the present state can be used for the teleportation of an arbitrary two qubit state deterministically. Later, we devise two distinct protocols for the QIS of an arbitrary two qubit state among two parties. We construct sixteen orthogonal measurement basis on the cluster state, which will lock an arbitrary two qubit state among two parties. The capability of the state for dense coding is investigated and it is shown that one can send five classical bits by sending only three qubits using this state as a shared entangled resource. We finally show that this state can also be utilised in the remote state preparation of an arbitrary two qubit state.