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Gail Bender added, Greenberg2024_ablation paper added, Ali Binai-Motlagh MSc thesis added, Rajibul bio updated to include OQD, Gilbert profile updated, Hawking profile updated
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| --- | ||
| title: "Gail Bender" | ||
| date: 2024-03-01T21:16:17-04:00 | ||
| draft: false | ||
| image: " " | ||
| tenure: | ||
| office: "QNC 4123" | ||
| extention: "x37379" | ||
| email: "g3bender@uwaterloo.ca" | ||
| previousInstitution: | ||
| currentInstitution: | ||
| tags: | ||
| - "adminAssistant" | ||
| - "g3bender" | ||
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| In her role as IQC Research Finance Coordinator, Mr. Gail Bender is the administrative assistant for the group. | ||
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| https://uwaterloo.ca/institute-for-quantum-computing/contacts/gail-bender |
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| --- | ||
| title: "Robust Optical Engineering for a Trapped Ion Quantum Computer" | ||
| authors: [[ "Ali BInai-Motlagh, MSc thesis", "ali.binai-motlagh"]] | ||
| link: "https://uwspace.uwaterloo.ca/handle/10012/18710" | ||
| journal: "University of Waterloo [Thesis link]" | ||
| volume: | ||
| issue: | ||
| date: 2022-09-02T00:00:00-00:00 | ||
| draft: false | ||
| arXiv: | ||
| tags: | ||
| - "Thesis" | ||
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| Trapped ions are one of the leading platforms for the implementation of quantum information processing (QIP), | ||
| exhibiting one of the highest reported quantum gate and measurement fidelities. The challenge for the platform | ||
| now is to maintain these high quality operations while expanding the system size beyond the ∼10-30 qubits that | ||
| are available in today’s devices. Currently we are near completion of the construction of our trapped ion quantum | ||
| computer that will incorporate multiple isotopes of barium as qubits/qudits. Barium has several favourable properties | ||
| that make it the ideal ion for QIP and the aim of our device in the near future is to develop this species into | ||
| the premiere ion for QIP. The device in the future is hoped to serve as a cloud based resource for the Waterloo | ||
| research community, fostering collaborations between algorithms, error correction and atomic physics researchers, | ||
| that is ultimately hoped to expedite the development of trapped ion QIP. This thesis discusses the robust optical | ||
| engineering that went into the construction of this trapped ion quantum computer. We describe the details of the | ||
| continuous wave optical subsystems used for ion initialization, cooling, and measurements of the quantum states, | ||
| including the imaging system used to collect ion fluorescence. In addition, this thesis discusses the unique individual | ||
| addressing system that we have designed and built for performing single and two-qubit gates based on Raman transitions. | ||
| With this system we attain a relative intensity crosstalk between neighbouring ions on the order of 1e−4. | ||
| This is comparable to the best currently available implementations but our system provides additional optical | ||
| frequency and phase control knobs that allow for more control over quantum simulation and computation experiments. | ||
| Finally we will discuss the trap, its associated electronics and the vacuum system that houses our ions and atomic source. |
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content/publications/2024-Greenberg-microgram-ablation-paper.md
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| title: "Microgram BaCl_2 Ablation Targets for Trapped Ion Experiments" | ||
| authors: [['Noah Greenberg'], ['Akbar Jahangiri Jozani','a2jahang'], ['Collin JC Epstein'], ['Xinghe Tan','Hawking Tan'], ['Rajibul Islam', 'krislam'], ['Crystal Senko']] | ||
| link: "" | ||
| journal: "" | ||
| volume: "" | ||
| issue: "" | ||
| date: 2024-02-06T00:00:00-00:00 | ||
| DOI: | ||
| draft: false | ||
| arXiv: "2402.06632" | ||
| tags: | ||
| - "QITI" | ||
| image: "images/publications/2024-Greenberg.png" | ||
| --- | ||
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| **Abstract:** Trapped ions for quantum information processing has been an area of intense study due to the extraordinarily high | ||
| fidelity operations that have been reported experimentally. Specifically, barium trapped ions have been shown to have | ||
| exceptional state-preparation and measurement (SPAM) fidelities. The 133Ba+ (I=1/2) isotope in particular is a promising candidate | ||
| for large-scale quantum computing experiments. However, a major pitfall with this isotope is that it is radioactive and | ||
| is thus generally used in microgram quantities to satisfy safety regulations. We describe a new method for creating microgram | ||
| barium chloride (BaCl_2) ablation targets for use in trapped ion experiments and compare our procedure to previous methods. We outline | ||
| two recipes for fabrication of ablation targets that increase the production of neutral atoms for isotope-selective loading of barium ions. | ||
| We show that heat-treatment of the ablation targets greatly increases the consistency at which neutral atoms can be produced | ||
| and we characterize the uniformity of these targets using trap-independent techniques such as energy dispersive x-ray spectroscopy (EDS) | ||
| and neutral fluorescence collection. Our comparison between fabrication techniques and demonstration of consistent neutral fluorescence | ||
| paves a path towards reliable loading of 133Ba+ in surface traps and opens opportunities for scalable quantum computing with this isotope. |
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