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FM: Fall Meeting

FM 14: Quantum Computation: Hardware Platforms I

FM 14.7: Talk

Montag, 23. September 2019, 15:45–16:00, 3044

Scalable Rare Earth Ion Quantum Computing Nodes (SQUARE) — •David Hunger — Karlsruhe Institute of Technology, Karlsruhe, Germany

Quantum technologies rely on materials that offer the central resource of quantum coherence, that allow one to control this resource and to harness interactions to create entanglement. Rare earth ions (REI) doped into solids have an outstanding potential in this context and could serve as a scalable, multi-functional quantum material. REI provide a unique physical system enabling a quantum register with a large number of qubits, strong dipolar interactions between the qubits allowing fast quantum gates, and coupling to optical photons - including telecom wavelengths - opening the door to connect quantum processors in a quantum network. The flagship project SQUARE aims at establishing individually addressable rare earth ions as a fundamental building block of a quantum computer, and to overcome the main roadblocks on the way towards scalable quantum hardware. The goal is to realize the basic elements of a multifunctional quantum processor node, where multiple qubits can be used for quantum storage, quantum gates, and for coherent spin-photon quantum state mapping.