Related papers: Unconventional saturation effects at intermediate drive in a lossy cavity coupled to few emitters

Unconventional saturation effects at intermediate drive in a lossy cavity coupled to few emitters

URL: http://arxiv.org/abs/2110.00595v2
Date: Fri, 17 Feb 2023 18:03:51 GMT
Title: Unconventional saturation effects at intermediate drive in a lossy cavity coupled to few emitters
Authors: Therese Karmstrand, Benjamin Rousseaux, Anton Frisk Kockum, Timur Shegai, G\"oran Johansson
Abstract summary: We study a nonlinear response of the cavity for resonant external driving of intermediate strength. In this regime, $(N+1)$-photon processes dominate when the cavity couples to $N$ emitters. We find that a central condition for the observed effect is large cooperativity, i.e., the product of the cavity and emitter decay rates is much smaller than the collective cavity-emitter interaction strength squared.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Recent technological advancements have enabled strong light-matter interaction in highly dissipative cavity-emitter systems. However, in these systems, which are well described by the Tavis-Cummings model, the considerable loss rates render the realization of many desirable nonlinear effects, such as saturation and photon blockade, problematic. Here we present another effect occurring within the Tavis-Cummings model: a nonlinear response of the cavity for resonant external driving of intermediate strength, which makes use of large cavity dissipation rates. In this regime, $(N+1)$-photon processes dominate when the cavity couples to $N$ emitters. We explore and characterize this effect in detail, and provide a picture of how the effect occurs due to destructive interference between the emitter ensemble and the external drive. We find that a central condition for the observed effect is large cooperativity, i.e., the product of the cavity and emitter decay rates is much smaller than the collective cavity-emitter interaction strength squared. Importantly, this condition does not require strong coupling. We also find an analytical expression for the critical drive strength at which the effect appears. Our results have potential for quantum state engineering, e.g., photon filtering, and could be used for the characterization of cavity-emitter systems where the number of emitters is unknown. In particular, our results open the way for investigations of unique quantum-optics applications in a variety of platforms that neither require high-quality cavities nor strong coupling.

Related papers

How single-photon nonlinearity is quenched with multiple quantum emitters: Quantum Zeno effect in collective interactions with $\Lambda$-level atoms [49.1574468325115]
We show that the single-photon nonlinearity vanishes with the number of emitters. The mechanism behind this behavior is the quantum Zeno effect, manifested in the slowdown of the photon-controlled dynamics.
arXiv Detail & Related papers (2024-01-13T06:55:18Z)
Kondo QED: The Kondo effect and photon trapping in a two-impurity Anderson model ultra-strongly coupled to light [0.43496401697112697]
Kondo effect is one of the most studied examples of strongly correlated quantum many-body physics. We study a system that combines both phenomena, consisting of a two-impurity Anderson model ultra-strongly coupled to a single-mode cavity. While presented as an abstract model, it is relevant for a range of future hybrid cavity-QED systems.
arXiv Detail & Related papers (2023-02-02T12:17:15Z)
Dissipative light-matter coupling and anomalous dispersion in nonideal cavities [0.0]
We show that an effective dissipative coupling between the emitter and the cavity can emerge because of their interaction with a common photonic environment. Our results provide a pathway for accessing a range of non-Hermitian phenomena in a variety of light-matter coupled systems.
arXiv Detail & Related papers (2023-01-05T18:43:50Z)
Resolving Fock states near the Kerr-free point of a superconducting resonator [51.03394077656548]
We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting Asymmetric Inductive eLement) We have excited photons near this Kerr-free point and characterized the device using a transmon qubit.
arXiv Detail & Related papers (2022-10-18T09:55:58Z)
Probing the symmetry breaking of a light--matter system by an ancillary qubit [50.591267188664666]
Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena. We experimentally observe the parity symmetry breaking of an ancillary Xmon artificial atom induced by the field of a lumped-element superconducting resonator. This result opens a way to experimentally explore the novel quantum-vacuum effects emerging in the deep-strong coupling regime.
arXiv Detail & Related papers (2022-09-13T06:14:08Z)
Regimes of Cavity-QED under Incoherent Excitation: From Weak to Deep Strong Coupling [0.0]
A two-level atom interacting with a quantized single-mode electromagnetic field is described by the quantum Rabi model (QRM) Here, we study the photon flux emission rate of this system under the incoherent excitation of the two-level atom for any light-matter interaction strength.
arXiv Detail & Related papers (2021-12-16T14:36:54Z)
Optomechanical strong coupling between a single cavity photon and a single atom [0.0]
Single atoms coupled to a cavity offer unique opportunities as quantum optomechanical devices because of their small mass and strong interaction with light. We propose an alternative route in such systems, which relies on the coupling of atomic motion to the much narrower cavity-dressed atomic resonance frequency. We analyze the prominent observable features of this optomechanical strong coupling, which include a per-photon motional heating that is significantly larger than the single-photon recoil energy.
arXiv Detail & Related papers (2021-08-07T21:32:17Z)
A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
arXiv Detail & Related papers (2021-06-21T17:34:02Z)
Coherence in Cooperative Photon Emission from Indistinguishable Quantum Emitters [0.0]
We probe the role of coherence in cooperative emission arising from two distant but indistinguishable solid-state emitters because of path erasure. Our experiments establish techniques to control and characterize cooperative behavior between matter qubits using the full quantum optics toolbox.
arXiv Detail & Related papers (2021-05-19T20:59:25Z)
Observation-dependent suppression and enhancement of two-photon coincidences by tailored losses [68.8204255655161]
Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter. In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement. Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
arXiv Detail & Related papers (2021-05-12T06:47:35Z)
Frequency-resolved photon correlations in cavity optomechanics [58.720142291102135]
We analyze the frequency-resolved correlations of the photons being emitted from an optomechanical system. We discuss how the time-delayed correlations can reveal information about the dynamics of the system. This enriched understanding of the system can trigger new experiments to probe nonlinear phenomena in optomechanics.
arXiv Detail & Related papers (2020-09-14T06:17:36Z)

This list is automatically generated from the titles and abstracts of the papers in this site.