All Outputs (77)

Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas (2019)
Journal Article

Understanding and manipulating the non-Hermitian optical property based on coherent atomic gases is of great importance and has attracted much theoretical and experimental attentions. Advancing this study to the nonlinear optics regime is highly desi... Read More about Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas.

Exploring nonequilibrium phases of the generalized Dicke model with a trapped Rydberg-ion quantum simulator (2019)
Journal Article

Trapped ions are a versatile platform for the investigation of quantum many-body phenomena, in particular for the study of scenarios where long-range interactions are mediated by phonons. Recent experiments have shown that the trapped ion platform ca... Read More about Exploring nonequilibrium phases of the generalized Dicke model with a trapped Rydberg-ion quantum simulator.

Stable single light bullets and vortices and their active control in cold Rydberg gases (2019)
Journal Article

Realizing single light bullets and vortices that are stable in high dimensions is a long-standing goal in the study of nonlinear optical physics. On the other hand, the storage and retrieval of such stable high dimensional optical pulses may offer a... Read More about Stable single light bullets and vortices and their active control in cold Rydberg gases.

Robust Rydberg gate via Landau-Zener control of Förster resonance (2018)
Journal Article

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.

Devil's staircases without particle-hole symmetry (2018)
Journal Article

We present and analyze spin models with long-range interactions whose ground state features a so-called devil’s staircase and where plateaus of the staircase are accessed by varying two-body interactions. This is in contrast to the canonical devil’s... Read More about Devil's staircases without particle-hole symmetry.

Supersolidity of lattice bosons immersed in strongly correlated Rydberg dressed atoms (2018)
Journal Article

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.

Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems (2017)
Journal Article

We investigate the dynamics of a generic interacting many-body system under conditions of electromagnetically induced transparency (EIT). This problem is of current relevance due to its connection to non-linear optical media realized by Rydberg atoms... Read More about Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems.

Single strontium Rydberg ion confined in a Paul trap (2017)
Journal Article

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.

Quantum melting of two-component Rydberg crystals (2016)
Journal Article

We investigate the quantum melting of one-dimensional crystals that are realized in an atomic lattice in which ground state atoms are laser excited to two Rydberg states. We focus on a regime where both, intra- and interstate density-density interact... Read More about Quantum melting of two-component Rydberg crystals.

Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances (2016)
Journal Article

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.

Emergent devil's staircase without particle-hole symmetry in Rydberg quantum gases with competing attractive and repulsive interactions (2015)
Journal Article

The devil's staircase is a fractal structure that characterizes the ground state of one-dimensional classical lattice gases with long-range repulsive convex interactions. Its plateaus mark regions of stability for specific filling fractions which are... Read More about Emergent devil's staircase without particle-hole symmetry in Rydberg quantum gases with competing attractive and repulsive interactions.

Coherence in a cold atom photon transistor (2015)
Journal Article

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.

Non-equilibrium universality in the dynamics of dissipative cold atomic gases (2015)
Journal Article

The theory of continuous phase transitions predicts the universal collective properties of a physical system near a critical point, which for instance manifest in characteristic power-law behaviours of physical observables. The well-established conce... Read More about Non-equilibrium universality in the dynamics of dissipative cold atomic gases.

Phase-imprinting of Bose-Einstein condensates with Rydberg impurities (2015)
Journal Article

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

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

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

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.