Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits
We consider mediated interactions in an array of floating transmons, where each qubit capacitor consists of two superconducting pads galvanically isolated from ground. Each such pair contributes two quantum degrees of freedom, one of which is used as a qubit, while the other remains fixed. Howeve...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/143814 |
| _version_ | 1811098217473900544 |
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| author | Yanay, Yariv Braumüller, Jochen Orlando, Terry P Gustavsson, Simon Tahan, Charles Oliver, William D |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Yanay, Yariv Braumüller, Jochen Orlando, Terry P Gustavsson, Simon Tahan, Charles Oliver, William D |
| author_sort | Yanay, Yariv |
| collection | MIT |
| description | We consider mediated interactions in an array of floating transmons, where
each qubit capacitor consists of two superconducting pads galvanically isolated
from ground. Each such pair contributes two quantum degrees of freedom, one of
which is used as a qubit, while the other remains fixed. However, these
extraneous modes can generate coupling between the qubit modes that extends
beyond the nearest neighbor. We present a general formalism describing the
formation of this coupling and calculate it for a one-dimensional chain of
transmons. We show that the strength of coupling and its range (that is, the
exponential falloff) can be tuned independently via circuit design to realize a
continuum from nearest-neighbor-only interactions to interactions that extend
across the length of the chain. We present designs with capacitance and
microwave simulations showing that various interaction configurations can be
achieved in realistic circuits. Such coupling could be used in analog
simulation of different quantum regimes or to increase connectivity in digital
quantum systems. Thus mechanism must also be taken into account in other types
of qubits with extraneous modes. |
| first_indexed | 2024-09-23T17:11:45Z |
| format | Article |
| id | mit-1721.1/143814 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T17:11:45Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1438142023-02-09T16:22:43Z Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits Yanay, Yariv Braumüller, Jochen Orlando, Terry P Gustavsson, Simon Tahan, Charles Oliver, William D Massachusetts Institute of Technology. Research Laboratory of Electronics Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Lincoln Laboratory We consider mediated interactions in an array of floating transmons, where each qubit capacitor consists of two superconducting pads galvanically isolated from ground. Each such pair contributes two quantum degrees of freedom, one of which is used as a qubit, while the other remains fixed. However, these extraneous modes can generate coupling between the qubit modes that extends beyond the nearest neighbor. We present a general formalism describing the formation of this coupling and calculate it for a one-dimensional chain of transmons. We show that the strength of coupling and its range (that is, the exponential falloff) can be tuned independently via circuit design to realize a continuum from nearest-neighbor-only interactions to interactions that extend across the length of the chain. We present designs with capacitance and microwave simulations showing that various interaction configurations can be achieved in realistic circuits. Such coupling could be used in analog simulation of different quantum regimes or to increase connectivity in digital quantum systems. Thus mechanism must also be taken into account in other types of qubits with extraneous modes. 2022-07-18T16:18:43Z 2022-07-18T16:18:43Z 2022-03-25 2022-07-18T16:15:41Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/143814 Yanay, Yariv, Braumüller, Jochen, Orlando, Terry P, Gustavsson, Simon, Tahan, Charles et al. 2022. "Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits." Physical Review Applied, 17 (3). en 10.1103/physrevapplied.17.034060 Physical Review Applied 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. application/pdf American Physical Society (APS) APS |
| spellingShingle | Yanay, Yariv Braumüller, Jochen Orlando, Terry P Gustavsson, Simon Tahan, Charles Oliver, William D Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title | Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title_full | Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title_fullStr | Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title_full_unstemmed | Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title_short | Mediated Interactions beyond the Nearest Neighbor in an Array of Superconducting Qubits |
| title_sort | mediated interactions beyond the nearest neighbor in an array of superconducting qubits |
| url | https://hdl.handle.net/1721.1/143814 |
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