Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit
Bosonic codes store information in the phase space of a quantum harmonic oscillator and offer a hardware‐efficient path towards quantum error correction (QEC), requiring only an oscillator and an auxiliary qubit for measurement and universal control. Of the many bosonic codes, the so‐called Gottesma...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Published: |
Massachusetts Institute of Technology
2024
|
| Online Access: | https://hdl.handle.net/1721.1/156166 |
| _version_ | 1826216508699705344 |
|---|---|
| author | Chowdhury, Shoumik |
| author2 | Oliver, William D. |
| author_facet | Oliver, William D. Chowdhury, Shoumik |
| author_sort | Chowdhury, Shoumik |
| collection | MIT |
| description | Bosonic codes store information in the phase space of a quantum harmonic oscillator and offer a hardware‐efficient path towards quantum error correction (QEC), requiring only an oscillator and an auxiliary qubit for measurement and universal control. Of the many bosonic codes, the so‐called Gottesman‐Kitaev‐Preskill (GKP) code stands out as one of the most robust to dominant physical decoherence mechanisms, but is severely limited by bit‐ flip errors in the control qubit. In this thesis, we develop a new approach for implementing GKP QEC in superconducting circuits based on using a heavy fluxonium as the auxiliary control qubit due to its inherent bit‐flip protection. We demonstrate progress towards this in experiment by using a fluxonium in a 3D superconducting cavity architecture, and also propose novel strategies for moving future experiments to a fully 2D platform. |
| first_indexed | 2024-09-23T16:48:48Z |
| format | Thesis |
| id | mit-1721.1/156166 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:48:48Z |
| publishDate | 2024 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1561662024-08-15T03:01:55Z Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit Chowdhury, Shoumik Oliver, William D. Grover, Jeffrey A. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Bosonic codes store information in the phase space of a quantum harmonic oscillator and offer a hardware‐efficient path towards quantum error correction (QEC), requiring only an oscillator and an auxiliary qubit for measurement and universal control. Of the many bosonic codes, the so‐called Gottesman‐Kitaev‐Preskill (GKP) code stands out as one of the most robust to dominant physical decoherence mechanisms, but is severely limited by bit‐ flip errors in the control qubit. In this thesis, we develop a new approach for implementing GKP QEC in superconducting circuits based on using a heavy fluxonium as the auxiliary control qubit due to its inherent bit‐flip protection. We demonstrate progress towards this in experiment by using a fluxonium in a 3D superconducting cavity architecture, and also propose novel strategies for moving future experiments to a fully 2D platform. S.M. 2024-08-14T20:12:24Z 2024-08-14T20:12:24Z 2024-05 2024-07-10T12:59:32.040Z Thesis https://hdl.handle.net/1721.1/156166 In Copyright - Educational Use Permitted Copyright retained by author(s) https://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Chowdhury, Shoumik Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title | Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title_full | Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title_fullStr | Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title_full_unstemmed | Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title_short | Bosonic Quantum Error Correction with a Heavy Fluxonium Control Qubit |
| title_sort | bosonic quantum error correction with a heavy fluxonium control qubit |
| url | https://hdl.handle.net/1721.1/156166 |
| work_keys_str_mv | AT chowdhuryshoumik bosonicquantumerrorcorrectionwithaheavyfluxoniumcontrolqubit |