Bialczak, R.C. et al. (2011) Fast tunable coupler for superconducting qubits. Physical Review Letters, 106(6), 060501. (doi: 10.1103/PhysRevLett.106.060501) (PMID:21405448)
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Abstract
A major challenge in the field of quantum computing is the construction of scalable qubit coupling architectures. Here, we demonstrate a novel tunable coupling circuit that allows superconducting qubits to be coupled over long distances. We show that the interqubit coupling strength can be arbitrarily tuned over nanosecond time scales within a sequence that mimics actual use in an algorithm. The coupler has a measured on/off ratio of 1000. The design is self-contained and physically separate from the qubits, allowing the coupler to be used as a module to connect a variety of elements such as qubits, resonators, amplifiers, and readout circuitry over distances much larger than nearest-neighbor. Such design flexibility is likely to be useful for a scalable quantum computer.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Weides, Professor Martin |
| Authors: | Bialczak, R.C., Ansmann, M., Hofheinz, M., Lenander, M., Lucero, E., Neeley, M., O’Connell, A.D., Sank, D., Wang, H., Weides, M., Wenner, J., Yamamoto, T., Cleland, A.N., and Martinis, J.M. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
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