Opinion: Democratizing Spin Qubits

Charles Tahan

doi:10.22331/q-2021-11-18-584

Opinion: Democratizing Spin Qubits

Laboratory for Physical Sciences, 8050 Greenmead Rd, College Park, MD 20740

Published:	2021-11-18, volume 5, page 584
Eprint:	arXiv:2001.08251v2
Doi:	https://doi.org/10.22331/q-2021-11-18-584
Citation:	Quantum 5, 584 (2021).

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Abstract

I've been building Powerpoint-based quantum computers with electron spins in silicon for 20 years. Unfortunately, real-life-based quantum dot quantum computers are harder to implement. Materials, fabrication, and control challenges still impede progress. The way to accelerate discovery is to make and measure more qubits. Here I discuss separating the qubit realization and testing circuitry from the materials science and on-chip fabrication that will ultimately be necessary. This approach should allow us, in the shorter term, to characterize wafers non-invasively for their qubit-relevant properties, to make small qubit systems on various different materials with little extra cost, and even to test spin-qubit to superconducting cavity entanglement protocols where the best possible cavity quality is preserved. Such a testbed can advance the materials science of semiconductor quantum information devices and enable small quantum computers. This article may also be useful as a light and light-hearted introduction to quantum dot spin qubits.

Popular summary

I've been building Powerpoint-based quantum computers with electron spins in silicon for 20 years. Unfortunately, real-life-based quantum dot quantum computers are harder to implement. The way to accelerate discovery is to make and measure more qubits. Here I discuss separating the qubit realization and testing circuitry from the materials science and on-chip fabrication that will ultimately be necessary. Such a testbed can advance the materials science of semiconductor quantum information devices and enable small quantum computers.

► BibTeX data

@article{Tahan2021opinion,
  doi = {10.22331/q-2021-11-18-584},
  url = {https://doi.org/10.22331/q-2021-11-18-584},
  title = {Opinion: {D}emocratizing {S}pin {Q}ubits},
  author = {Tahan, Charles},
  journal = {{Quantum}},
  issn = {2521-327X},
  publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
  volume = {5},
  pages = {584},
  month = nov,
  year = {2021}
}

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