Entanglement concentration and purification of two-mode squeezed microwave photons in circuit QED

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Annals of Physics

DOI:https://doi.org/10.1016/J.AOP.2018.02.007· OSTI ID:22848313

Zhang, Hao ^[1]; Alsaedi, Ahmed ^[2]; Hayat, Tasawar ^[2]; Deng, Fu-Guo ^[1]

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1. Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875 (China)
2. NAAM Research Group, Department of Mathematics, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)

We present a theoretical proposal for a physical implementation of entanglement concentration and purification protocols for two-mode squeezed microwave photons in circuit quantum electrodynamics (QED). First, we give the description of the cross-Kerr effect induced between two resonators in circuit QED. Then we use the cross-Kerr media to design the effective quantum nondemolition (QND) measurement on microwave-photon number. By using the QND measurement, the parties in quantum communication can accomplish the entanglement concentration and purification of nonlocal two-mode squeezed microwave photons. We discuss the feasibility of our schemes by giving the detailed parameters which can be realized with current experimental technology. Our work can improve some practical applications in continuous-variable microwave-based quantum information processing.

• OSTI ID: 22848313
• Journal Information: Annals of Physics, Journal Name: Annals of Physics Vol. 391; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
KERR EFFECT
MICROWAVE RADIATION
PURIFICATION
QUANTUM ELECTRODYNAMICS
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
RESONATORS