Quantum control of continuous systems via nonharmonic potential modulation
We present a theoretical proposal for preparing and manipulating a state of a single continuous-variable degree of freedom confined to a nonharmonic potential. By utilizing optimally controlled modulation of the potential's position and depth, we demonstrate the generation of non-Gaussian state...
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| Format: | Article |
| Language: | English |
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Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2025-08-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2025-08-08-1824/pdf/ |
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| author | Piotr T. Grochowski Hannes Pichler Cindy A. Regal Oriol Romero-Isart |
| author_facet | Piotr T. Grochowski Hannes Pichler Cindy A. Regal Oriol Romero-Isart |
| author_sort | Piotr T. Grochowski |
| collection | DOAJ |
| description | We present a theoretical proposal for preparing and manipulating a state of a single continuous-variable degree of freedom confined to a nonharmonic potential. By utilizing optimally controlled modulation of the potential's position and depth, we demonstrate the generation of non-Gaussian states, including Fock, Gottesman-Kitaev-Preskill, multi-legged-cat, and cubic-phase states, as well as the implementation of arbitrary unitaries within a selected two-level subspace. Additionally, we propose protocols for single-shot orthogonal state discrimination, algorithmic cooling, and correcting for nonlinear evolution. We analyze the robustness of this control scheme against noise. Since all the presented protocols rely solely on the precise modulation of the effective nonharmonic potential landscape, they are relevant to several experiments with continuous-variable systems, including the motion of a single particle in an optical tweezer or lattice, or current in circuit quantum electrodynamics. |
| format | Article |
| id | doaj-art-8545d23d14f74e4fa2f5cb64956354e7 |
| institution | Kabale University |
| issn | 2521-327X |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| record_format | Article |
| series | Quantum |
| spelling | doaj-art-8545d23d14f74e4fa2f5cb64956354e72025-08-20T03:59:32ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2025-08-019182410.22331/q-2025-08-08-182410.22331/q-2025-08-08-1824Quantum control of continuous systems via nonharmonic potential modulationPiotr T. GrochowskiHannes PichlerCindy A. RegalOriol Romero-IsartWe present a theoretical proposal for preparing and manipulating a state of a single continuous-variable degree of freedom confined to a nonharmonic potential. By utilizing optimally controlled modulation of the potential's position and depth, we demonstrate the generation of non-Gaussian states, including Fock, Gottesman-Kitaev-Preskill, multi-legged-cat, and cubic-phase states, as well as the implementation of arbitrary unitaries within a selected two-level subspace. Additionally, we propose protocols for single-shot orthogonal state discrimination, algorithmic cooling, and correcting for nonlinear evolution. We analyze the robustness of this control scheme against noise. Since all the presented protocols rely solely on the precise modulation of the effective nonharmonic potential landscape, they are relevant to several experiments with continuous-variable systems, including the motion of a single particle in an optical tweezer or lattice, or current in circuit quantum electrodynamics.https://quantum-journal.org/papers/q-2025-08-08-1824/pdf/ |
| spellingShingle | Piotr T. Grochowski Hannes Pichler Cindy A. Regal Oriol Romero-Isart Quantum control of continuous systems via nonharmonic potential modulation Quantum |
| title | Quantum control of continuous systems via nonharmonic potential modulation |
| title_full | Quantum control of continuous systems via nonharmonic potential modulation |
| title_fullStr | Quantum control of continuous systems via nonharmonic potential modulation |
| title_full_unstemmed | Quantum control of continuous systems via nonharmonic potential modulation |
| title_short | Quantum control of continuous systems via nonharmonic potential modulation |
| title_sort | quantum control of continuous systems via nonharmonic potential modulation |
| url | https://quantum-journal.org/papers/q-2025-08-08-1824/pdf/ |
| work_keys_str_mv | AT piotrtgrochowski quantumcontrolofcontinuoussystemsvianonharmonicpotentialmodulation AT hannespichler quantumcontrolofcontinuoussystemsvianonharmonicpotentialmodulation AT cindyaregal quantumcontrolofcontinuoussystemsvianonharmonicpotentialmodulation AT oriolromeroisart quantumcontrolofcontinuoussystemsvianonharmonicpotentialmodulation |