Session X26: Superconducting Qubits: Coherent Phases in Superconducting Resonators
2:30 PM–5:30 PM, Thursday, March 18, 2010
Room: D136
Sponsoring Unit:
GQI
Chair: Matthias Steffen, IBM
Abstract ID: BAPS.2010.MAR.X26.11
Abstract: X26.00011 : Deterministic generation of entangled photon pairs in coupled superconducting resonators
4:30 PM–4:42 PM
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Abstract 
Authors:
Yong Hu
(5200 N Lake Rd., School of Natural Sciences, University of California, Merced, CA 95343, USA)
Lin Tian
(5200 N Lake Rd., School of Natural Sciences, University of California, Merced, CA 95343, USA)
Entangled photon pairs play an important role in quantum information. In this work, we propose a scheme for the on-demand generation of entangled photon pairs in a circuit of four superconducting transmission-line resonators connected in a ring geometry. Each resonator in this circuit couples with a superconducting qubit. Strong coupling between superconducting resonators and superconducting qubits has been demonstrated in recent experiments. This coupling can generate a tunable Kerr-like nonlinearity in the resonators. Combining this nonlinearity with the photon tunneling between adjacent resonators, the system can be described as a Bose-Hubbard-like model. We will show that entangled photon pairs, i.e. EPR pairs, can be prepared by microwave pulses with high fidelity when the nonlinearity dominates over the photon tunneling; and can be transferred to flying modes when the photon tunneling dominates over the nonlinearity. We also studied the effect of resonator damping on this scheme.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.X26.11