Muzzle the Shuttle: Efficient Compilation for Multi-Trap Trapped-Ion Quantum Computers
Abdullah Ash Saki1,a, Rasit Onur Topaloglu2 and Swaroop Ghosh1,b
1Dept. of Electrical Engineering Pennsylvania State University University Park, PA
aash.saki@live.com
bszg212@psu.edu
2IBM Poughkeepsie, NY
rasit@us.ibm.com
ABSTRACT
Trapped-ion systems can have a limited number of ions (qubits) in a single trap. Increasing the qubit count to run meaningful quantum algorithms would require multiple traps where ions need to shuttle between traps to communicate. The existing compiler has several limitations, which result in a high number of shuttle operations and degraded fidelity. In this paper, we target this gap and propose compiler optimizations to reduce the number of shuttles. Our technique achieves a maximum reduction of 51.17% in shuttles (average ≈ 33%) tested over 125 circuits. Furthermore, the improved compilation enhances the program fidelity up to 22.68X with a modest increase in the compilation time.
Keywords: Quantum Computing, Qubit, Trapped-Ion, Shuttle, Compiler.
