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ANN ARBOR, Mich.—University of Michigan Physics Professors Luming Duan and Duncan Steel (also Professor of EECS) are part of a national Multidisciplinary University Research Initiative (MURI) collaboration formed to study Quantum-Optical Circuits of Hybrid Quantum Memories. The initiative will investigate and demonstrate optically coupled hybrid quantum circuitry, with the aim of utilizing certain features of various quantum platforms to enhance quantum information. This initiative may affect the future by creating new long-distance communication capabilities.
The collaboration will use integrated and reconfigurable quantum optical systems as a means of seeding, entangling, and teleporting quantum information between stable atomic quantum memories and scalable and fast solid-state quantum processors.
The first phase of the grant will allow the investigators to pave the way for the eventual quantum linkage of an atomic and solid-state quantum memory. They will integrate quantum memories to photonic and chip devices in both trapped ion/atom and quantum dot (QD) systems.
Specifically, Professor Luming Duan will study the manifold of challenges associated with impedance matching between these disparate platforms. His theoretical team 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 the team concentrates on the above specific systems, they anticipate that the approaches and developed technology may apply to other quantum systems as the program develops.
Professor Duncan Steel will work with epitaxially grown InAs/lGaAs semiconductor quantum dots (QD) in collaboration with the condensed matter group at the Naval Research Laboratory headed by Dan Gammon and the quantum optics group at University of Illinois directed by Professor Paul Quiat. His experimental team will implement an interface between the solid-state quantum processor and the photonic pulses, which can carry quantum information to distant locations. His team will generate entanglement between a photon and the spin of an electron or hole contained in a semiconductor quantum dot. This will eventually lead to a reconfigurable quantum optical circuit that can connect different quantum platforms such as the atomic memory and the solid-state quantum processor.
The interdisciplinary team consists of experimental and theoretical groups from JQI/Maryland, University of Illinois, Duke University, University of Michigan, U.S. Naval Research Laboratory, and the University of San Diego.
The Department of Defense Multidisciplinary University Research Initiative (MURI) program supports research by teams of investigators that intersect more than one traditional science and engineering discipline in order to accelerate both research progress and transition of research results to application. Most MURI efforts involve researchers from multiple academic institutions and academic departments.
News Contact: Carol Rabuck, firstname.lastname@example.org, U-M Physics Department Communications