Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Z69: Recent advances in bosonic quantum error correction
11:30 AM–2:30 PM,
Friday, March 10, 2023
Room: Room 421
Sponsoring Unit: DQI
Chair: Murphy Yuezhen Niu, Google LLC
Abstract: Z69.00002 : Encoding qubits in multiple oscillators*
12:06 PM–12:42 PM
Steven M Girvin
In this talk, I will show that we can tackle this challenge by encoding a logical qubit in multiple modes instead of a single one. Interestingly, these multimode codes have several properties that make them an attractive option as the basis for a quantum computer. More precisely, we introduce a method to autonomously stabilize the code space of multimode GKP codes, and introduce a two-mode grid code which has improved properties with respect to traditional single mode GKP codes. When stabilized with a qubit ancilla, we numerically show that this code has improved robustness against ancilla decay.
*This work was supported by the Army Research Office under Grant No. W911NF-18-1-0212.
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