Shortcut-to-Adiabatic Controlled-Phase Gate in Rydberg Atoms
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866917055754665984 |
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| author | Bosch, Luis S. Yagüe Ehret, Tim Petiziol, Francesco Arimondo, Ennio Wimberger, Sandro |
| author_facet | Bosch, Luis S. Yagüe Ehret, Tim Petiziol, Francesco Arimondo, Ennio Wimberger, Sandro |
| contents | A shortcut-to-adiabatic protocol for the realization of a fast and high-fidelity controlled-phase gate in Rydberg atoms is developed. The adiabatic state transfer, driven in the high-blockade limit, is sped up by compensating nonadiabatic transitions via oscillating fields that mimic a counterdiabatic Hamiltonian. High fidelities are obtained in wide parameter regions. The implementation of the bare effective counterdiabatic field, without original adiabatic pulses, enables to bypass gate errors produced by the accumulation of blockade-dependent dynamical phases, making the protocol efficient also at low blockade values. As an application toward quantum algorithms, how the fidelity of the gate impacts the efficiency of a minimal quantum-error correction circuit is analyzed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_11594 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Shortcut-to-Adiabatic Controlled-Phase Gate in Rydberg Atoms Bosch, Luis S. Yagüe Ehret, Tim Petiziol, Francesco Arimondo, Ennio Wimberger, Sandro Quantum Physics Quantum Gases Atomic Physics A shortcut-to-adiabatic protocol for the realization of a fast and high-fidelity controlled-phase gate in Rydberg atoms is developed. The adiabatic state transfer, driven in the high-blockade limit, is sped up by compensating nonadiabatic transitions via oscillating fields that mimic a counterdiabatic Hamiltonian. High fidelities are obtained in wide parameter regions. The implementation of the bare effective counterdiabatic field, without original adiabatic pulses, enables to bypass gate errors produced by the accumulation of blockade-dependent dynamical phases, making the protocol efficient also at low blockade values. As an application toward quantum algorithms, how the fidelity of the gate impacts the efficiency of a minimal quantum-error correction circuit is analyzed. |
| title | Shortcut-to-Adiabatic Controlled-Phase Gate in Rydberg Atoms |
| topic | Quantum Physics Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2312.11594 |