Distance scaling of electric-field noise in a surface-electrode ion trap
We investigate anomalous ion-motional heating, a limitation to multiqubit quantum-logic gate fidelity in trapped-ion systems, as a function of ion-electrode separation. Using a multizone surface-electrode trap in which ions can be held at five discrete distances from the metal electrodes, we measure...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/114395 https://orcid.org/0000-0002-4034-8744 |
| _version_ | 1811083342506885120 |
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| author | Sedlacek, Jonathon Greene, Amy L Stuart, J. Scott McConnell, Robert P. Bruzewicz, Colin D. Sage, Jeremy M. Chiaverini, John |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Sedlacek, Jonathon Greene, Amy L Stuart, J. Scott McConnell, Robert P. Bruzewicz, Colin D. Sage, Jeremy M. Chiaverini, John |
| author_sort | Sedlacek, Jonathon |
| collection | MIT |
| description | We investigate anomalous ion-motional heating, a limitation to multiqubit quantum-logic gate fidelity in trapped-ion systems, as a function of ion-electrode separation. Using a multizone surface-electrode trap in which ions can be held at five discrete distances from the metal electrodes, we measure power-law dependencies of the electric-field noise experienced by the ion on the ion-electrode distance d. We find a scaling of approximately d^{−4} regardless of whether the electrodes are at room temperature or cryogenic temperature, despite the fact that the heating rates are approximately two orders of magnitude smaller in the latter case. Through auxiliary measurements using the application of noise to the electrodes, we rule out technical limitations to the measured heating rates and scalings. We also measure the frequency scaling of the inherent electric-field noise close to 1/f at both temperatures. These measurements eliminate from consideration anomalous-heating models which do not have a d⁻⁴ distance dependence, including several microscopic models of current interest. |
| first_indexed | 2024-09-23T12:31:32Z |
| format | Article |
| id | mit-1721.1/114395 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:31:32Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1143952022-10-01T09:34:44Z Distance scaling of electric-field noise in a surface-electrode ion trap Sedlacek, Jonathon Greene, Amy L Stuart, J. Scott McConnell, Robert P. Bruzewicz, Colin D. Sage, Jeremy M. Chiaverini, John Lincoln Laboratory Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Sedlacek, Jonathon Greene, Amy L Stuart, J. Scott McConnell, Robert P. Bruzewicz, Colin D. Sage, Jeremy M. Chiaverini, John We investigate anomalous ion-motional heating, a limitation to multiqubit quantum-logic gate fidelity in trapped-ion systems, as a function of ion-electrode separation. Using a multizone surface-electrode trap in which ions can be held at five discrete distances from the metal electrodes, we measure power-law dependencies of the electric-field noise experienced by the ion on the ion-electrode distance d. We find a scaling of approximately d^{−4} regardless of whether the electrodes are at room temperature or cryogenic temperature, despite the fact that the heating rates are approximately two orders of magnitude smaller in the latter case. Through auxiliary measurements using the application of noise to the electrodes, we rule out technical limitations to the measured heating rates and scalings. We also measure the frequency scaling of the inherent electric-field noise close to 1/f at both temperatures. These measurements eliminate from consideration anomalous-heating models which do not have a d⁻⁴ distance dependence, including several microscopic models of current interest. 2018-03-27T15:31:49Z 2018-03-27T15:31:49Z 2018-02 2017-12 2018-02-15T18:54:42Z Article http://purl.org/eprint/type/JournalArticle 2469-9926 2469-9934 http://hdl.handle.net/1721.1/114395 Sedlacek, J. A. et al. "Distance scaling of electric-field noise in a surface-electrode ion trap." Physical Review A 97, 2 (February 2018): 020302(R) © 2018 American Physical Society https://orcid.org/0000-0002-4034-8744 en http://dx.doi.org/10.1103/PhysRevA.97.020302 Physical Review A Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Sedlacek, Jonathon Greene, Amy L Stuart, J. Scott McConnell, Robert P. Bruzewicz, Colin D. Sage, Jeremy M. Chiaverini, John Distance scaling of electric-field noise in a surface-electrode ion trap |
| title | Distance scaling of electric-field noise in a surface-electrode ion trap |
| title_full | Distance scaling of electric-field noise in a surface-electrode ion trap |
| title_fullStr | Distance scaling of electric-field noise in a surface-electrode ion trap |
| title_full_unstemmed | Distance scaling of electric-field noise in a surface-electrode ion trap |
| title_short | Distance scaling of electric-field noise in a surface-electrode ion trap |
| title_sort | distance scaling of electric field noise in a surface electrode ion trap |
| url | http://hdl.handle.net/1721.1/114395 https://orcid.org/0000-0002-4034-8744 |
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