Digital Quantum Simulations of the Non-Resonant Open Tavis-Cummings Model
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866914204827516928 |
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| author | Sims, Aidan N. Patel, Dhrumil Philip, Aby Rubin, Alex H. Bandyopadhyay, Rahul Radulaski, Marina Wilde, Mark M. |
| author_facet | Sims, Aidan N. Patel, Dhrumil Philip, Aby Rubin, Alex H. Bandyopadhyay, Rahul Radulaski, Marina Wilde, Mark M. |
| contents | The open Tavis--Cummings model consists of $N$ quantum emitters interacting with a common cavity mode, accounts for losses and decoherence, and is frequently explored for quantum information processing and designing quantum devices. As $N$ increases, it becomes harder to simulate the open Tavis--Cummings model using traditional methods. To address this problem, we implement two quantum algorithms for simulating the dynamics of this model in the inhomogeneous, non-resonant regime, with up to three excitations in the cavity. We show that the implemented algorithms have gate complexities that scale polynomially, as $O(N^2)$ and $O(N^3)$, while the number of qubits used by these algorithms (space complexity) scales linearly as $O(N)$. One of these algorithms is the sampling-based wave matrix Lindbladization algorithm, for which we propose two protocols to implement its system-independent fixed interaction, resolving key open questions of [Patel and Wilde, Open Sys. & Info. Dyn., 30:2350014 (2023)]. We benchmark our results against a classical differential equation solver in a variety of scenarios and demonstrate that our algorithms accurately reproduce the expected dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_18522 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Digital Quantum Simulations of the Non-Resonant Open Tavis-Cummings Model Sims, Aidan N. Patel, Dhrumil Philip, Aby Rubin, Alex H. Bandyopadhyay, Rahul Radulaski, Marina Wilde, Mark M. Quantum Physics Data Structures and Algorithms Computational Physics Optics The open Tavis--Cummings model consists of $N$ quantum emitters interacting with a common cavity mode, accounts for losses and decoherence, and is frequently explored for quantum information processing and designing quantum devices. As $N$ increases, it becomes harder to simulate the open Tavis--Cummings model using traditional methods. To address this problem, we implement two quantum algorithms for simulating the dynamics of this model in the inhomogeneous, non-resonant regime, with up to three excitations in the cavity. We show that the implemented algorithms have gate complexities that scale polynomially, as $O(N^2)$ and $O(N^3)$, while the number of qubits used by these algorithms (space complexity) scales linearly as $O(N)$. One of these algorithms is the sampling-based wave matrix Lindbladization algorithm, for which we propose two protocols to implement its system-independent fixed interaction, resolving key open questions of [Patel and Wilde, Open Sys. & Info. Dyn., 30:2350014 (2023)]. We benchmark our results against a classical differential equation solver in a variety of scenarios and demonstrate that our algorithms accurately reproduce the expected dynamics. |
| title | Digital Quantum Simulations of the Non-Resonant Open Tavis-Cummings Model |
| topic | Quantum Physics Data Structures and Algorithms Computational Physics Optics |
| url | https://arxiv.org/abs/2501.18522 |