Quantum speed limit and optimal control of many-boson dynamics
We apply the concept of quantum speed limit (QSL)—the minimal time needed to perform a driven evolution—to complex interacting many-body systems where the effects of interactions have to be taken into account. We introduce a general strategy to eliminate the detrimental effects of the interparticle...
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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
7 December 2015
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| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2015, Volume: 92, Issue: 6 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.92.062110 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.92.062110 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.92.062110 
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| Author Notes: | Ioannis Brouzos, Alexej I. Streltsov, Antonio Negretti, Ressa S. Said, Tommaso Caneva, Simone Montangero, and Tommaso Calarco |
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| 245 | 1 | 0 | |a Quantum speed limit and optimal control of many-boson dynamics |c Ioannis Brouzos, Alexej I. Streltsov, Antonio Negretti, Ressa S. Said, Tommaso Caneva, Simone Montangero, and Tommaso Calarco |
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| 520 | |a We apply the concept of quantum speed limit (QSL)—the minimal time needed to perform a driven evolution—to complex interacting many-body systems where the effects of interactions have to be taken into account. We introduce a general strategy to eliminate the detrimental effects of the interparticle repulsion and drive the system at the QSL by applying a compensating control pulse (CCP). To prove the principles we consider a prototypical many-body system, a bosonic Josephson junction, and investigate a transfer of atoms from the ground state of one well to the ground state of the neighboring well, at increasing levels of complexity—from a textbook two-level approximation to full many-body treatment. By tracing the efficiency of the CCP protocol we show that the driven dynamics does follow the geodetic pathway and, therefore, it is optimal. The CCP strategy, applicable for a general interacting quantum many-body system with strong driving, can be of a practical relevance for the experimental implementation of quantum technology protocols, as quantum simulations or matter-wave metrology. | ||
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| 700 | 1 | |a Negretti, Antonio |e VerfasserIn |4 aut | |
| 700 | 1 | |a Said, Ressa S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Caneva, Tommaso |e VerfasserIn |4 aut | |
| 700 | 1 | |a Montangero, Simone |e VerfasserIn |4 aut | |
| 700 | 1 | |a Calarco, Tommaso |e VerfasserIn |4 aut | |
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