Information Free Quantum Bus for Generating Stabiliser States

  • Authors:

  • Simon J. Devitt;Andrew D. Greentree;Lloyd C. Hollenberg

  • Affiliations:

  • Centre for Quantum Computer Technology, School of Physics, University of Melbourne, Melbourne, Australia 3010;Centre for Quantum Computer Technology, School of Physics, University of Melbourne, Melbourne, Australia 3010;Centre for Quantum Computer Technology, School of Physics, University of Melbourne, Melbourne, Australia 3010

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2007

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Abstract

Efficient generation of spatially delocalised entangledstates is at the heart of quantum information science. Generally,flying qubits are proposed for long range entangling interactions,however here we introduce a bus-mediated alternative for this task.Our scheme permits efficient and flexible generation ofdeterministic two-qubit operator measurements and has links to theimportant concepts of mode-entanglement and repeat-until-successprotocols. Importantly, unlike flying qubit protocols, our busparticle never contains information about the individual quantumstates of the particles, hence is information-free.