Control and Measurement of Three-Qubit Entangled States
Top Cited Papers
- 4 June 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 304 (5676) , 1478-1480
- https://doi.org/10.1126/science.1097522
Abstract
We report the deterministic creation of maximally entangled three-qubit states—specifically the Greenberger-Horne-Zeilinger (GHZ) state and the W state—with a trapped-ion quantum computer. We read out one of the qubits selectively and show how GHZ and W states are affected by this local measurement. Additionally, we demonstrate conditional operations controlled by the results from reading out one qubit. Tripartite entanglement is deterministically transformed into bipartite entanglement by local operations only. These operations are the measurement of one qubit of a GHZ state in a rotated basis and, conditioned on this measurement result, the application of single-qubit rotations.Keywords
This publication has 17 references indexed in Scilit:
- Realization of the Cirac–Zoller controlled-NOT quantum gateNature, 2003
- Quantum erasers and probing classifications of entanglement via nuclear magnetic resonancePhysical Review A, 2002
- Measurement of qubitsPhysical Review A, 2001
- Step-by-Step Engineered Multiparticle EntanglementScience, 2000
- Experimental test of quantum nonlocality in three-photon Greenberger–Horne–Zeilinger entanglementNature, 2000
- Entanglement of projection and a new class of quantum erasersPhysical Review A, 1999
- Mixed-state entanglement and quantum error correctionPhysical Review A, 1996
- Error Correcting Codes in Quantum TheoryPhysical Review Letters, 1996
- Scheme for reducing decoherence in quantum computer memoryPhysical Review A, 1995
- Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channelsPhysical Review Letters, 1993