Critical slowing down of multi-atom entanglement by Rydberg blockade
arXiv:1806.11440 · doi:10.1103/PhysRevA.98.022324
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 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.
arXiv comment5 pages, 6 figures
References in corpus (15)
- Stimulated Raman adiabatic passage in physics, chemistry and beyond
- Simple pulses for elimination of leakage in weakly nonlinear qubits
- Ground state overlap and quantum phase transitions
- Dynamics of a Quantum Phase Transition
- Shortcuts to adiabaticity
- Measuring multipartite entanglement via dynamic susceptibilities
- Quantum gates and multi-particle entanglement by Rydberg excitation blockade and adiabatic passage
- Detecting multiparticle entanglement of Dicke states
- Quantum fidelity and quantum phase transitions in matrix product states
- Universal Work Fluctuations during Shortcuts To Adiabaticity by Counterdiabatic Driving
- Low temperature relaxational dynamics of the Ising chain in a transverse field
- Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble
- Long-range quantum discord in critical spin systems
- Quantum macroscopicity measure for arbitrary spin systems and its application to quantum phase transitions
- Scaling of macroscopic superpositions close to a quantum phase transition