J4 ›› 2010, Vol. 27 ›› Issue (2): 180-186.

• Quantum Optics • Previous Articles     Next Articles

Minimal measurement complexity for quantum information splitting of two-qubit state

  

  • Received:2009-06-16 Revised:2010-03-05 Published:2010-03-28 Online:2010-03-05
  • Supported by:
    The project supported by the Talent Foundation of High Education of Anhui Province for outstanding youth

Abstract: We propose a quantum information splitting scheme of two-qubit state by using two asymmetric W states as quantum channels. We show that if the two-qubit state is known to the sender (Alice), then she can split quantum information and distribute it to the receivers (Bob and Charlie) by performing a two-qubit projective measurement. Bob and Charlie can collaborate and recover the quantum information by first performing a collective unitary operation on their qubits, and then respectively implementing two single-qubit unitary operations. So our scheme greatly reduces the measurement complexity.