CQuIC Seminars
Scaling approaches for trapped-ion quantum computing
Presented by Jonathan Home, ETH
A VIRTUAL AMO SEMINAR presented in a Zoom meeting vetted by CQuIC. See https://sites.google.com/stanford.edu/virtual-amo-seminar/schedule for the meeting link. While error-prone quantum computers consisting of tens of qubits provide much excitement today, useful quantum computers are predicted to need more than 100,000 physical qubits. The primary cause of this scaling is the need for quantum error-correction to make these devices produce reliable outcomes. Scaling is likely to require the use of different technologies to those in use today, as well as benefitting from the exploration of new approaches. I will describe two areas which we are exploring at ETH Zürich in the context of trapped-ion quantum computing. On the technology side, we have demonstrated the use of chip traps fabricated in a commercial foundry to perform multi-qubit quantum logic using light delivered from the chip to the ion using integrated photonics, producing entangled Bell states with a fidelity of 99.3% [1]. We are also exploring the use of micro-Penning trap arrays to produce 2-dimensional ion systems for quantum computing and quantum simulation using only static trapping fields. This removes a number of constraints which stem from the use of strong radio-frequency fields for ion trapping, which is an attractive feature for scaling [2]. [1] K. Mehta et al. arXiv:2002.02258 (2020)
[2] S. Jain et al. arXiv:1812.06755v3 (2020)
1:00 pm, Friday, June 26, 2020
Zoom,
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