Quantum Technologies Infrastructure Discussion
Group discussions on infrastructure needs for solid-state qubits, defects, optics, and quantum materials, emphasizing collaboration, access modes, and multinational sources to address industry interest and alignment with research programs.
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Presentation Transcript
Group 1: solid state qubits - which surface/interface affects T2 - loss mechanism for each dielectric - test device for Q factor in resonant circuit across temp. and power - scaling vs. spatial resolution - T2 worse for smaller volume due to field strength - coupling benefits from smaller scale - temperature cycling - elastic strain - plastic deformation - variation of qubit performance - breaking of Cooper pairs by background radiation platforms - supercond. qubits - quantum dots - topological qubits problems (example: superconducting qubits) - materials' related sources of decoherence - uncontrolled oxides in Al/AlOx platform, more problems in Nb platform, NbTiN - improvement with Ta, 20 more candidates
solutions - spectroscopy on various length scales down to 10 nm - concentration gradients - in operando (but not at mK temperatures) - strain analysis - epitaxy (implicit/explicit) - spacial maps of charge noise versus x-ray imaging - identification of defects - impact of cleaner environment - hard superconducting gap and proximity by ARPES
Group 2: defects Problem 1) structure around defects 2) local strain field around dopants and in average 3) reason for active/inactive dopant 4) structure and electronic states down to 3 nm from surface 5) check homogenity of large number of dopants Needs 1) access to irradation facilities 2) expertise in irradiation 3) expertise in broad characterization tools - THz to x-rays, also multimodal Benefits - contribution to rendering solutions scaleable - reliable production persepective triggers industry interest
Group 3: Optics, quantum materials - better exploitation of quantum nature of photons - entanglement - downconversion - single photon generation - wave mixing methods - better exploitation of pure states of spin and orbital momentum - cleaner states and their manipulation - characterization and improvement of materials - cleaner surfaces - larger coherence times
Points discussed access mode - beyond "beamtime", users -> collaborators - align in-house research programs - request for extra infrastructure QT platforms are different - in infrastructure needs - which extra infrastructure is needed? - in TRL levels - from basic research to startups guidance - priorization required before call - address infrastructure needs (location, financing) - multinational sources (conditions for access)
Action: "Target driven research 2024: topical call across LEAPS facilities call step 1: express interest LEAPS + contact persons - check infrastructure needs - infrastructure available at LEAPS facilities? No development of infrastructure Yes 5 months selection and beamtime assessment of process distinguish platforms 1 contact person per platform from community + 1 from facility creates working group in community - name urgent problems to be addressed 6 months Meeting LEAPS + contact persons + funding agent - integrity check - select urgent problems to be addressed
