Florentin Reiter, Lars Tornberg, Göran Johansson, Anders S. S\orensen
We present a scheme for dissipative preparation of an entangled steady state of two superconducting qubits in a circuit QED setup. Combining resonator photon loss, a dissipative process already present in the setup, with an effective two-photon microwave drive, we engineer an effective decay mechanism which prepares a maximally entangled state of the two qubits. This state is then maintained as the steady state of the driven, dissipative evolution. The performance of the dissipative state preparation protocol is studied analytically and verified numerically. In view of the experimental implementation of the presented scheme we investigate the effects of potential experimental imperfections and show that our scheme is robust to small deviations in the parameters. The promising results of our study thus open a route for the demonstration of an entangled steady state in circuit QED.
View original:
http://arxiv.org/abs/1304.0746
No comments:
Post a Comment