Generating and detecting multi-qubit GHZ states in circuit QED

          @misc{ scivideos_PIRSA:09090002,
            doi = {10.48660/09090002},
            url = {https://pirsa.org/09090002},
            author = {Bishop, Lev},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Generating and detecting multi-qubit GHZ states in circuit QED},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {sep},
            note = {PIRSA:09090002 see, \url{https://scivideos.org/index.php/pirsa/09090002}}
          }
          

Abstract

I will present recent work [1] on preparation by measurement of Greenberger–Horne–Zeilinger (GHZ) states in circuit quantum electrodynamics. In particular, for the 3-qubit case, when employing a nonlinear filter on the recorded homodyne signal the selected states are found to exhibit values of the Bell–Mermin operator exceeding 2 under realistic conditions. I will discuss the potential of the dispersive readout to demonstrate a violation of the Mermin bound, and present a measurement scheme avoiding the necessity for full detector tomography. [1] Lev S Bishop et al 2009 New J. Phys. 11 073040