MURI: Quantum Optical Circuits of Hybrid Quantum Memories

The program objective is to investigate and demonstrate optically-coupled hybrid quantum circuitry, with an aim of exploiting particular features of various quantum platforms for enhanced quantum information capabilities. We will demonstrate quantum optical interfaces between (a) atomic systems having excellent coherence and memory properties, (b) solid state systems with high-speed operations and scalable architectures, and (c) optical photonic systems with long-distance communication capabilities. This endeavor is defined by a close collaboration between experimental and theoretical groups with expertise in different fields, and our team from JQI/Maryland, Illinois, Duke, Michigan, NRL, and San Diego is well-positioned to explore the following specific platforms:

• Atomic: Ion traps and atom chip traps (Monroe, Kim, Lev)
• Solid state: GaAs/AlGaAs semiconductor quantum dots (QD) (Steel, Waks, Gammon)
• Optical: Nonlinear and single-photon quantum optics (Kwiat, Gauthier)

The theory team of Duan, Taylor, and Sham will study the manifold challenges of impedance-matching these disparate platforms. We will perform detailed studies of asymmetric decoherence processes in such hybrid quantum systems and investigate new forms of quantum error correction expected to arise. While we concentrate on the above specific systems, we anticipate that the approaches and technology developed in this program may apply to other known quantum systems or even future systems that have yet to be uncovered.

Copyright © JQI, University of Maryland, 2011
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