Critical slowing down of multi-atom entanglement by Rydberg blockade
Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms if their highest excited state is subject to Rydberg blockade. Solution of the Schr\"odinger equation shows that it is increasingly diff...
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| Published in | arXiv.org |
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| Language | English |
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29.06.2018
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| ISSN | 2331-8422 |
| DOI | 10.48550/arxiv.1806.11440 |
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| Abstract | Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms if their highest excited state is subject to Rydberg blockade. Solution of the Schr\"odinger equation shows that it is increasingly difficult to ensure the adiabatic evolution as the number of atoms increases. A diminishing energy gap, significant variations in collective observables, and increased work fluctuations link the critical slowing down of the adiabatic evolution with a quantum phase transition-like behavior of the system. |
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| AbstractList | Phys. Rev. A 98, 022324 (2018) Laser excitation pulses that lead to perfect adiabatic state transfer in an
ensemble of three-level ladder atoms lead to highly entangled states of many
atoms if their highest excited state is subject to Rydberg blockade. Solution
of the Schrödinger equation shows that it is increasingly difficult to ensure
the adiabatic evolution as the number of atoms increases. A diminishing energy
gap, significant variations in collective observables, and increased work
fluctuations link the critical slowing down of the adiabatic evolution with a
quantum phase transition-like behavior of the system. Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms if their highest excited state is subject to Rydberg blockade. Solution of the Schr\"odinger equation shows that it is increasingly difficult to ensure the adiabatic evolution as the number of atoms increases. A diminishing energy gap, significant variations in collective observables, and increased work fluctuations link the critical slowing down of the adiabatic evolution with a quantum phase transition-like behavior of the system. |
| Author | Mølmer, Klaus Abad, Tahereh |
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| BackLink | https://doi.org/10.48550/arXiv.1806.11440$$DView paper in arXiv https://doi.org/10.1103/PhysRevA.98.022324$$DView published paper (Access to full text may be restricted) |
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| Copyright | 2018. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. http://arxiv.org/licenses/nonexclusive-distrib/1.0 |
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| DOI | 10.48550/arxiv.1806.11440 |
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| Snippet | Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms... Phys. Rev. A 98, 022324 (2018) Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly... |
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| SubjectTerms | Adiabatic flow Atomic properties Energy gap Entangled states Evolution Phase transitions Physics - Quantum Physics Quantum entanglement Variation |
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| Title | Critical slowing down of multi-atom entanglement by Rydberg blockade |
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