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LASSP & AEP Seminar - Karan Mehta - Cornell University
Tuesday, February 22, 2022 at 12:20pm
700 Clark Hall
Host: Jeffrey Moses
Title: Integrated optical control of trapped-ion quantum systems
Abstract: Practical quantum information processing requires significant advances over current systems in error and robustness of basic operations, and in scale. The fundamental qualities of trapped atomic ion qubits are promising for long-term systems, but the optics required pose a major challenge in scaling. Interfacing low-noise atomic qubits with scalable integrated photonics [1] is a promising route forward, enabling practical extensibility while simultaneously lending robustness to noise. I will give a brief introduction to trapped-ion QC and current state of the art, and then describe recent experiments utilizing ion trap devices with integrated waveguide optical delivery, which have allowed us to realize multi-ion entangling quantum logic with fidelities >99.3% [2]. I will discuss how such techniques further allow generation of optical field profiles enabling new physical operations, including recent results on ions manipulated in passively phase-stable optical standing waves; opportunities and challenges in photonics posed by applications in atomic systems; and possibilities at this interface to advance future experiments in areas including sensing and precision metrology. [1] K.K. Mehta, C.D. Bruzewicz, R. McConnell, R.J. Ram, J.M. Sage, and J. Chiaverini. “Integrated optical addressing of an ion qubit.” Nature Nanotechnology 11, 1066-1070 (2016). [2] K.K. Mehta, C. Zhang, M. Malinowski, T.-L. Nguyen, M. Stadler, and J.P. Home. “Integrated optical multi-ion quantum logic.” Nature 586, 533-537 (2020).
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Lea Reagan
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6072559684
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Karan Mehta
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Cornell University
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https://www.engineering.cornell.edu/faculty-directory/karan-mehta
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