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 LL07: V: Quantum Characterization, Verification, and Validation
5:00 AM–6:48 AM,
Tuesday, March 21, 2023
Room: Virtual Room 7
Sponsoring
Unit:
DQI
Chair: Luke Govia, IBM TJ Watson Research Center
Abstract: LL07.00009 : Universal compilation for quantum state tomography*
6:36 AM–6:48 AM
Presenter:
Le Bin Ho
(Tohoku University)
Authors:
Le Bin Ho
(Tohoku University)
Vu Tuan Hai
(University of Information Technology, Ho Chi Minh City, 700000, Vietnam)
Recently, quantum compiling, a circuit-based approach that compiles a trainable unitary into a target unitary, provides a fascinating playground in quantum computing. It has vast potential applications, from depth-circuit compressing to device benchmarking and quantum error mitigation. Here we propose a universal compilation algorithm for quantum state tomography in low-depth quantum circuits. We apply various gradient-based optimizations and evaluate the performance of trainable unitary topologies for getting high efficiency. The results are comparable with the shadow tomography method - a similar fashion in the field, and reveal the crucial role of the circuit depth in robust fidelity. Our work expresses the universal compilation algorithm's adequate capacity to maximize quantum state tomography's efficiency. Further, it promises applications in quantum metrology, quantum sensing, and various quantum computing tasks in the Noisy intermediate-scale quantum era.
*This work is supported by the Ensemble Grants for Early Career Researches in Tohoku University, and the VNUHCM-University of Information Technologies Scientific Research Support Fund.
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