A Cascaded Random Access Quantum Memory
Fuente:
arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866914363575631872 |
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| author | Li, Ziqian Gupta, Eesh Zhao, Fang Banerjee, Riju Lu, Yao Roy, Tanay Oriani, Andrew Vrajitoarea, Andrei Chakram, Srivatsan Schuster, David I. |
| author_facet | Li, Ziqian Gupta, Eesh Zhao, Fang Banerjee, Riju Lu, Yao Roy, Tanay Oriani, Andrew Vrajitoarea, Andrei Chakram, Srivatsan Schuster, David I. |
| contents | Dynamic random access memory (DRAM) is critical to classical computing but notably absent in current superconducting quantum processors. Integrating high-coherence memory units would enable resource-efficient control of logical qubits and allow the separate optimization of logic and storage subsystems. Here, we realize an 8-bit cascaded random access quantum memory (RAQM). By introducing a buffer layer between the processor and a multimode storage cavity, we leverage the control resources of a single transmon to address eight memory modes while isolating them from processor non-linearities. We demonstrate arbitrary random access with an average infidelity of $\lesssim 1.5\%$ per mode, characterizing the many-body interactions that dominate the error budget. This architecture enables a significant reduction in control lines per logical qubit and supports transversal operations within the memory module, establishing a scalable unit cell for fault-tolerant quantum architectures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_13953 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Cascaded Random Access Quantum Memory Li, Ziqian Gupta, Eesh Zhao, Fang Banerjee, Riju Lu, Yao Roy, Tanay Oriani, Andrew Vrajitoarea, Andrei Chakram, Srivatsan Schuster, David I. Quantum Physics Dynamic random access memory (DRAM) is critical to classical computing but notably absent in current superconducting quantum processors. Integrating high-coherence memory units would enable resource-efficient control of logical qubits and allow the separate optimization of logic and storage subsystems. Here, we realize an 8-bit cascaded random access quantum memory (RAQM). By introducing a buffer layer between the processor and a multimode storage cavity, we leverage the control resources of a single transmon to address eight memory modes while isolating them from processor non-linearities. We demonstrate arbitrary random access with an average infidelity of $\lesssim 1.5\%$ per mode, characterizing the many-body interactions that dominate the error budget. This architecture enables a significant reduction in control lines per logical qubit and supports transversal operations within the memory module, establishing a scalable unit cell for fault-tolerant quantum architectures. |
| title | A Cascaded Random Access Quantum Memory |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.13953 |