Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session W72: Fault-Tolerance and Optimization
3:00 PM–6:00 PM,
Thursday, March 9, 2023
Room: Room 406
Sponsoring
Unit:
DQI
Chair: David Layden, IBM Research - Almaden
Abstract: W72.00001 : Flag Gadgets based on Classical Codes*
3:00 PM–3:12 PM
Presenter:
Benjamin Anker
(University of New Mexico)
Authors:
Benjamin Anker
(University of New Mexico)
Milad Marvian
(University of New Mexico)
We develop a framework to design flag gadgets using classical codes, which is applicable to all stabilizer codes. Using this framework we show how to perform fault-tolerant syndrome extraction using exponentially fewer qubits than conventional methods. Taking advantage of the sublinear scaling of our construction, we also show how to fault-tolerantly measure several stabilizers using a single gadget, further reducing the number of ancilla qubits required. Using the developed framework we perform numerical simulations to find several small examples where our constructions reduce the number of qubits required. These small examples may be relevant to near-term experiments on small-scale quantum computers.
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Systems Accelerator, and by the NSF Grant No. CCF-1954960.
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