Quantum state engineering of spin-orbit coupled ultracold atoms in a Morse potential
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| Main Authors: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866918283090853888 |
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| author | Ban, Yue Chen, Xi Muga, J. G. Sherman, E. Ya |
| author_facet | Ban, Yue Chen, Xi Muga, J. G. Sherman, E. Ya |
| contents | Achieving full control of a Bose-Einstein condensate can have valuable applications in metrology, quantum information processing, and quantum condensed matter physics. We propose protocols to simultaneously control the internal (related to its pseudospin-1/2) and motional (position-related) states of a spin-orbit-coupled Bose-Einstein condensate confined in a Morse potential. In the presence of synthetic spin-orbit coupling, the state transition of a noninteracting condensate can be implemented by Raman coupling and detuning terms designed by invariant-based inverse engineering. The state transfer may also be driven by tuning the direction of the spin-orbit-coupling field and modulating the magnitude of the effective synthetic magnetic field. The results can be generalized for interacting condensates by changing the time-dependent detuning to compensate for the interaction. We find that a two-level algorithm for the inverse engineering remains numerically accurate even if the entire set of possible states is considered. The proposed approach is robust against the laser-field noise and systematic device-dependent errors. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_06996 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quantum state engineering of spin-orbit coupled ultracold atoms in a Morse potential Ban, Yue Chen, Xi Muga, J. G. Sherman, E. Ya Quantum Physics Quantum Gases Achieving full control of a Bose-Einstein condensate can have valuable applications in metrology, quantum information processing, and quantum condensed matter physics. We propose protocols to simultaneously control the internal (related to its pseudospin-1/2) and motional (position-related) states of a spin-orbit-coupled Bose-Einstein condensate confined in a Morse potential. In the presence of synthetic spin-orbit coupling, the state transition of a noninteracting condensate can be implemented by Raman coupling and detuning terms designed by invariant-based inverse engineering. The state transfer may also be driven by tuning the direction of the spin-orbit-coupling field and modulating the magnitude of the effective synthetic magnetic field. The results can be generalized for interacting condensates by changing the time-dependent detuning to compensate for the interaction. We find that a two-level algorithm for the inverse engineering remains numerically accurate even if the entire set of possible states is considered. The proposed approach is robust against the laser-field noise and systematic device-dependent errors. |
| title | Quantum state engineering of spin-orbit coupled ultracold atoms in a Morse potential |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2601.06996 |