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-Band Induced Self-Organization and Dynamics with Repulsively Driven Ultracold Atoms in an Optical Cavity

Zupancic, Philip; Dreon, Davide; Li, Xiangliang; Baumgärtner, Alexander; Morales, Andrea; Zheng, W. J.; Cooper, N. R.; Esslinger, Tilman; Donner, Tobias

doi:10.1103/physrevlett.123.233601

Cited by 39 publications

(28 citation statements)

References 39 publications

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“…[41] and can be realized by suitably choosing the sign of the detuning between laser and atomic transition as in Ref. [34]. The scaling 1/N s of the nonlinear term corresponds to scaling the quantization volume with the lattice size [46].…”

Section: Bose-hubbard Model With Global Correlated Tunnelingmentioning

confidence: 99%

“…Specifically, this model could be also realized in the experimental setups as discussed in [57][58][59]. In this work, we shall keep on referring to a CQED setup, where the dynamics predicted by Hamiltonian (1) has been extensively studied and can be realized [32][33][34].…”

Section: Bose-hubbard Model With Global Correlated Tunnelingmentioning

confidence: 99%

“…We argue that these dynamics can be realized, for instance, in many-body cavity quantum electrodynamics (CQED) setups [32][33][34][35][36][37], like the one illustrated in Fig. 1 highlighting the experimental feasibility of our proposal.…”

Section: Introductionmentioning

confidence: 99%

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Self-organized topological insulator due to cavity-mediated correlated tunneling

Chanda

Kraus

Morigi

et al. 2021

Quantum

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Topological materials have potential applications for quantum technologies. Non-interacting topological materials, such as e.g., topological insulators and superconductors, are classified by means of fundamental symmetry classes. It is instead only partially understood how interactions affect topological properties. Here, we discuss a model where topology emerges from the quantum interference between single-particle dynamics and global interactions. The system is composed by soft-core bosons that interact via global correlated hopping in a one-dimensional lattice. The onset of quantum interference leads to spontaneous breaking of the lattice translational symmetry, the corresponding phase resembles nontrivial states of the celebrated Su-Schriefer-Heeger model. Like the fermionic Peierls instability, the emerging quantum phase is a topological insulator and is found at half fillings. Originating from quantum interference, this topological phase is found in "exact" density-matrix renormalization group calculations and is entirely absent in the mean-field approach. We argue that these dynamics can be realized in existing experimental platforms, such as cavity quantum electrodynamics setups, where the topological features can be revealed in the light emitted by the resonator.

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Section: Bose-hubbard Model With Global Correlated Tunnelingmentioning

confidence: 99%

Section: Bose-hubbard Model With Global Correlated Tunnelingmentioning

confidence: 99%

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Self-organized topological insulator due to cavity-mediated correlated tunneling

Chanda

Kraus

Morigi

et al. 2021

Quantum

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show abstract

“…2d. For the chosen atomic detuning ∆ a > 0, the self-organised phase corresponding to the real quadrature q vanishes for increasing transverse lattice depth [34]. Therefore, increasing the coupling strength results in lowering q and leads to a competition with the crystal structure with p = 0 .…”

mentioning

confidence: 99%

Self-oscillating geometric pump in a dissipative atom-cavity system

Dreon,

Baumgärtner,

et al. 2021

Preprint

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“…A paradigmatic example is the realization of the Dicke superradiant phase [22][23][24][25] in a weakly interacting Bose-Einstein condensate (BEC) coupled to a cavity [19,26]. The ubiquitous dissipation present in these systems can be exploited to obtain squeezing and entanglement [27], chiral states [28], as well as oscillatory and chaotic dynamics [29][30][31][32][33][34][35][36][37]. Particularly, cavity dissipation is known to stabilize excited eigenstates as steady states in the interpolating Dicke-Tavis-Cummings (IDTC) model where two-level atoms are coupled to both quadratures of the cavity field [38,39], which has recently been experimentally verified by employing a spinor BEC coupled to a cavity [40].…”

mentioning

confidence: 99%

Dissipation-engineered family of nearly dark states in many-body cavity-atom systems

Lin,

Rosa-Medina,

Ferri

et al. 2021

Preprint

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Three-level atomic systems coupled to light have the potential to host dark states. We study a system of V-shaped three-level atoms coherently coupled to the two quadratures of a dissipative cavity. The interplay between the atomic level structure and dissipation drastically modifies the phase diagram of the system. In particular, it leads to the stabilization of a continuous family of dark and nearly dark excited many-body states with inverted atomic populations as the steady states. The multistability of these states can be probed via their distinct fluctuations and excitation spectra, as well as the system's Liouvillian dynamics which are highly sensitive to ramp protocols. Our model can be implemented experimentally where the two higher-energy modes are addressed by orthogonal density-modulated states in a bosonic quantum gas. This implementation can potentially realize a microscopy of subwavelength spatial resolution by probing the associated fluctuations.

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P -Band Induced Self-Organization and Dynamics with Repulsively Driven Ultracold Atoms in an Optical Cavity

Cited by 39 publications

References 39 publications

Self-organized topological insulator due to cavity-mediated correlated tunneling

Self-organized topological insulator due to cavity-mediated correlated tunneling

Self-oscillating geometric pump in a dissipative atom-cavity system

Dissipation-engineered family of nearly dark states in many-body cavity-atom systems

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