Non-Markovian Collective Emission of Giant emitters in the Zeno Regime
- URL: http://arxiv.org/abs/2406.14811v2
- Date: Wed, 11 Sep 2024 08:56:18 GMT
- Title: Non-Markovian Collective Emission of Giant emitters in the Zeno Regime
- Authors: Qing-Yang Qiu, Xin-You Lü,
- Abstract summary: We explore the collective Zeno dynamics of giant artificial atoms that are coupled, via multiple coupling points, to a common photonic or acoustic reservoir.
We reveal that giant atoms build up their collective emission smoothly from the decay rate of zero to that predicted by Markovian approximation.
Our results might be probed in state-of-art waveguide QED experiments, and fundamentally broaden the fields of collective emission in systems with giant atoms.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We explore the collective Zeno dynamics of giant artificial atoms that are coupled, via multiple coupling points, to a common photonic or acoustic reservoir. In this regime, the establishment of atomic cooperativity and the revivification of exponential decay, are highly intertwined, which is utterly beyond the non-Markovian regime with only retarded backaction. We reveal that giant atoms build up their collective emission smoothly from the decay rate of zero to that predicted by Markovian approximation, and show great disparity between different waveguide QED setups. As a comparison, the step-like growth of instantaneous decay rates in the retardation-only picture has also been shown. All of these theoretical pictures predict the same collective behavior in the long time limit. From a phenomenological standpoint, we observe that the atomic superradiance exhabits significant directional property. In addition, the subradiant photons feature prolonged oscillation in the early stage of collective radiance, where the energy is exchanged remarkably between giant emitters and the field. Our results might be probed in state-of-art waveguide QED experiments, and fundamentally broaden the fields of collective emission in systems with giant atoms.
Related papers
- Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system.
Our findings open a new way to engineer dissipation-induced entanglement.
arXiv Detail & Related papers (2024-11-11T08:39:32Z) - Emergence of second-order coherence in superfluorescence [0.0]
We investigate the second-order quantum coherence function of a superradiant burst in a cascaded quantum system.
Our findings reveal that, despite the fundamentally different coupling Hamiltonian, superradiance in cascaded and symmetrically coupled systems feature a strikingly large number of similarities.
arXiv Detail & Related papers (2024-07-17T13:30:16Z) - Higher-order topological Peierls insulator in a two-dimensional
atom-cavity system [58.720142291102135]
We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state.
The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states.
Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
arXiv Detail & Related papers (2023-05-05T10:25:14Z) - Zeno Regime of Collective Emission: Non-Markovianity beyond Retardation [2.297524877457939]
We study the non-Markovian process in a subwavelength atom chain coupled to a one-dimensional (1D) waveguide.
By comparing a full quantum treatment with an approach incorporating only the retardation effect, we find that the field memory effect, characterized by the population of atomic excitation, is much more pronounced in collective emissions.
arXiv Detail & Related papers (2023-04-03T05:23:13Z) - Collective Radiance of Giant Atoms in Non-Markovian Regime [11.798151369038557]
We investigate the non-Markovian dynamics of two giant artificial atoms interacting with a continuum of bosonic modes in a 1D waveguide.
For certain collective states, the decay rates are found to be far beyond that predicted in the the Dicke model and standard Markovian framework.
The trapped photons/phonons in the BICs can also be re-released conveniently by changing the energy level splitting of giant atoms.
arXiv Detail & Related papers (2022-05-23T01:14:56Z) - Correlated steady states and Raman lasing in continuously pumped and
probed atomic ensembles [68.8204255655161]
We consider an ensemble of Alkali atoms that are continuously optically pumped and probed.
Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state.
We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
arXiv Detail & Related papers (2022-05-10T06:54:54Z) - Qubit-photon bound states in topological waveguides with long-range
hoppings [62.997667081978825]
Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states.
We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases.
We consider the coupling of emitters to the edge modes appearing in the different topological phases.
arXiv Detail & Related papers (2021-05-26T10:57:21Z) - Collective emission of photons from dense, dipole-dipole interacting
atomic ensembles [0.0]
We study the collective radiation properties of cold, trapped ensembles of atoms.
We find that the emission rate of a photon from an excited atomic ensemble is strongly enhanced for an elongated cloud.
arXiv Detail & Related papers (2020-09-18T06:44:02Z) - Many-body Signatures of Collective Decay in Atomic Chains [0.0]
We investigate the role of finite interatomic separation on correlated decay in mesoscopic chains.
We show that the superradiant burst survives at small distances, despite Hamiltonian dipole-dipole interactions.
We calculate the two-photon correlation function and demonstrate that emission is correlated and directional, as well as sensitive to small changes in the interatomic distance.
arXiv Detail & Related papers (2020-08-18T20:07:44Z) - Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas.
Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit.
The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
arXiv Detail & Related papers (2020-08-05T18:00:26Z) - Collective radiation from distant emitters [63.391402501241195]
We show that the spectrum of the radiated field exhibits non-Markovian features such as linewidth broadening beyond standard superradiance.
We discuss a proof-of-concept implementation of our results in a superconducting circuit platform.
arXiv Detail & Related papers (2020-06-22T19:03:52Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.