All Outputs (69)

Robust Rydberg gate via Landau-Zener control of Förster resonance (2018)
Journal Article
Huang, X.-R., Ding, Z.-X., Hu, C.-S., Shen, L.-T., Li, W., Wu, H., & Zheng, S.-B. (2018). Robust Rydberg gate via Landau-Zener control of Förster resonance. Physical Review A, 98(5), Article 052324. https://doi.org/10.1103/physreva.98.052324

In this paper, we propose a scheme to implement the two-qubit controlled-Z gate via the Stark-tuned Förster interaction of Rydberg atoms, where the Förster defect is driven by a time-dependent electric field of a simple sinusoidal function while the... Read More about Robust Rydberg gate via Landau-Zener control of Förster resonance.

Supersolidity of lattice bosons immersed in strongly correlated Rydberg dressed atoms (2018)
Journal Article
Li, Y., Geiβler, A., Hofstetter, W., & Li, W. (2018). Supersolidity of lattice bosons immersed in strongly correlated Rydberg dressed atoms. Physical Review A, 97(2), Article 023619. https://doi.org/10.1103/PhysRevA.97.023619

Recent experiments have illustrated that long range two-body interactions can be induced by laser coupling atoms to highly excited Rydberg states. Stimulated by this achievement, we study supersolidity of lattice bosons in an experimentally relevant... Read More about Supersolidity of lattice bosons immersed in strongly correlated Rydberg dressed atoms.

Single strontium Rydberg ion confined in a Paul trap (2017)
Journal Article
Higgins, G., Li, W., Pokorny, F., Zhang, C., Kress, F., Maier, C., …Hennrich, M. (2017). Single strontium Rydberg ion confined in a Paul trap. Physical Review X, 7(2), Article 021038. https://doi.org/10.1103/PhysRevX.7.021038

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two system... Read More about Single strontium Rydberg ion confined in a Paul trap.

Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances (2016)
Journal Article
Gorniaczyk, H., Tresp, C., Bienias, P., Paris-Mandoki, A., Li, W., Mirgorodskiy, I., …Hofferberth, S. (2016). Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances. Nature Communications, 7, Article e12480. https://doi.org/10.1038/ncomms12480

We demonstrate experimentally that Stark-tuned Förster resonances can be used to substantially increase the interaction between individual photons mediated by Rydberg interaction inside an optical medium. This technique is employed to boost the gain... Read More about Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances.

Coherence in a cold atom photon transistor (2015)
Journal Article
Li, W., & Lesanovsky, I. (2015). Coherence in a cold atom photon transistor. Physical Review A, 92(4), Article 043828. https://doi.org/10.1103/PhysRevA.92.043828

Recent experiments have realized an all-optical photon transistor using a cold atomic gas. This approach relies on electromagnetically induced transparency (EIT) in conjunction with the strong interaction among atoms excited to high-lying Rydberg sta... Read More about Coherence in a cold atom photon transistor.

Phase-imprinting of Bose-Einstein condensates with Rydberg impurities (2015)
Journal Article
Mukherjee, R., Ates, C., Li, W., & Wüster, S. (2015). Phase-imprinting of Bose-Einstein condensates with Rydberg impurities. Physical Review Letters, 115(4), 1-6. https://doi.org/10.1103/PhysRevLett.115.040401

We show how the phase profile of Bose-Einstein condensates can be engineered through its in- teraction with localized Rydberg excitations. The interaction is made controllable and long-range by off-resonantly coupling the condensate to another Rydber... Read More about Phase-imprinting of Bose-Einstein condensates with Rydberg impurities.

Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers (2015)
Journal Article
Hush, M. R., Li, W., Genway, S., Lesanovsky, I., & Armour, A. (2015). Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers. Physical Review A, 91, Article 061401. https://doi.org/10.1103/PhysRevA.91.061401

We investigate quantum synchronization theoretically in a system consisting of two cold ions in microtraps. The ions' motion is damped by a standing-wave laser whilst also being driven by a blue-detuned laser which results in self-oscillation. Workin... Read More about Spin correlations as a probe of quantum synchronization in trapped ion phonon-lasers.

Electromagnetically induced transparency in an entangled medium (2014)
Journal Article
Li, W., Viscor, D., Hofferberth, S., & Lesanovsky, I. (2014). Electromagnetically induced transparency in an entangled medium. Physical Review Letters, 112(24), https://doi.org/10.1103/PhysRevLett.112.243601

We theoretically investigate light propagation and electromagnetically induced transparency (EIT) in a quasi one-dimensional gas in which atoms interact strongly via exchange interactions. We focus on the case in which the gas is initially prepared i... Read More about Electromagnetically induced transparency in an entangled medium.

Generalized Dicke nonequilibrium dynamics in trapped ions (2014)
Journal Article
Genway, S., Li, W., Ates, C., Lanyon, B. P., & Lesanovsky, I. (2014). Generalized Dicke nonequilibrium dynamics in trapped ions. Physical Review Letters, 112(2),

We explore trapped ions as a setting to investigate nonequilibrium phases in a generalized Dicke model of dissipative spins coupled to phonon modes. We find a rich dynamical phase diagram including superradiantlike regimes, dynamical phase coexistenc... Read More about Generalized Dicke nonequilibrium dynamics in trapped ions.