Analogue Quantum Simulation with Fixed-Frequency Transmon Qubits
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866914692563206144 |
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| author | Greenaway, Sean Smith, Adam Mintert, Florian Malz, Daniel |
| author_facet | Greenaway, Sean Smith, Adam Mintert, Florian Malz, Daniel |
| contents | We experimentally assess the suitability of transmon qubits with fixed frequencies and fixed interactions for the realization of analogue quantum simulations of spin systems. We test a set of necessary criteria for this goal on a commercial quantum processor using full quantum process tomography and more efficient Hamiltonian tomography. Significant single qubit errors at low amplitudes are identified as a limiting factor preventing the realization of analogue simulations on currently available devices. We additionally find spurious dynamics in the absence of drive pulses, which we identify with coherent coupling between the qubit and a low dimensional environment. With moderate improvements, analogue simulation of a rich family of time-dependent many-body spin Hamiltonians may be possible. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_16439 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Analogue Quantum Simulation with Fixed-Frequency Transmon Qubits Greenaway, Sean Smith, Adam Mintert, Florian Malz, Daniel Quantum Physics We experimentally assess the suitability of transmon qubits with fixed frequencies and fixed interactions for the realization of analogue quantum simulations of spin systems. We test a set of necessary criteria for this goal on a commercial quantum processor using full quantum process tomography and more efficient Hamiltonian tomography. Significant single qubit errors at low amplitudes are identified as a limiting factor preventing the realization of analogue simulations on currently available devices. We additionally find spurious dynamics in the absence of drive pulses, which we identify with coherent coupling between the qubit and a low dimensional environment. With moderate improvements, analogue simulation of a rich family of time-dependent many-body spin Hamiltonians may be possible. |
| title | Analogue Quantum Simulation with Fixed-Frequency Transmon Qubits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2211.16439 |