Quantum Digital Simulation of Cavity Quantum Electrodynamics: Insights from Superconducting and Trapped Ion Quantum Testbeds

• URL: http://arxiv.org/abs/2404.03861v2
• Date: Sat, 17 Aug 2024 14:33:45 GMT
• Title: Quantum Digital Simulation of Cavity Quantum Electrodynamics: Insights from Superconducting and Trapped Ion Quantum Testbeds
• Authors: Alex H. Rubin, Brian Marinelli, Victoria A. Norman, Zainab Rizvi, Ashlyn D. Burch, Ravi K. Naik, John Mark Kreikebaum, Matthew N. H. Chow, Daniel S. Lobser, Melissa C. Revelle, Christopher G. Yale, Megan Ivory, David I. Santiago, Christopher Spitzer, Marina Krstic-Marinkovic, Susan M. Clark, Irfan Siddiqi, Marina Radulaski,
• Abstract summary: We present an early exploration of the potential for quantum computers to efficiently investigate open CQED physics. Our simulations make use of a recent quantum algorithm that maps the dynamics of a singly excited open Tavis-Cummings model containing $N$ atoms. By applying technology-specific transpilation and error mitigation techniques, we minimize the impact of gate errors, noise, and decoherence in each hardware platform.
• Score: 0.016994625126740815
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A leading application of quantum computers is the efficient simulation of large unitary quantum systems. Extending this advantage to the study of open Cavity Quantum Electrodynamics (CQED) systems could enable the use of quantum computers in the exploration and design of many-body quantum optical devices. Such devices have promising applications in optical quantum communication, simulation, and computing. In this work, we present an early exploration of the potential for quantum computers to efficiently investigate open CQED physics. Our simulations make use of a recent quantum algorithm that maps the dynamics of a singly excited open Tavis-Cummings model containing $N$ atoms coupled to a lossy cavity. We report the results of executing this algorithm on two noisy intermediate-scale quantum computers, a superconducting processor and a trapped ion processor, to simulate the population dynamics of an open CQED system featuring $N = 3$ atoms. By applying technology-specific transpilation and error mitigation techniques, we minimize the impact of gate errors, noise, and decoherence in each hardware platform, obtaining results which agree closely with the exact solution of the system. These results provide confidence that future simulation algorithms, combined with emerging large-scale quantum processors, can be a powerful tool for studying cavity quantum electrodynamics.

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