Controlling cooperative emission and superradiance in waveguide-coupled quantum dots

• URL: http://arxiv.org/abs/2410.17890v1
• Date: Wed, 23 Oct 2024 14:03:12 GMT
• Title: Controlling cooperative emission and superradiance in waveguide-coupled quantum dots
• Authors: D. Hallett, J. Wiercinski, L. Hallacy, S. Sheldon, R. Dost, N. Martin, A. Fenzl, I. Farrer, A. Verma, M. Cygorek, E. M. Gauger, M. S. Skolnick, L. R. Wilson,
• Abstract summary: We report the measurement of collective emission from a pair of independently tuneable InAs quantum dots embedded in a nanophotonic waveguide. A split diode structure allows independent electrical control of the quantum dot transition energies over a wide range with minimal loss in waveguide coupling efficiency.
• Score: 0.0
• License:
• Abstract: We report the measurement of collective emission from a pair of independently tuneable InAs quantum dots embedded in a nanophotonic waveguide. A split diode structure allows independent electrical control of the quantum dot transition energies over a wide range with minimal loss in waveguide coupling efficiency. We utilise this to systematically map out the transition from collective to independent emission. We perform both lifetime as well as Hanbury Brown-Twiss measurements on the device, observing anti-dips in the photon coincidences indicating collective emission while at the same time observing a drop in lifetime around zero detuning, indicating superradiant behaviour. Performing both measurement types allows us to investigate detuning regions which show both superradiant rate enhancement and inter-emitter coherence, as well as regions in which correlations persist in the absence of rate enhancement.

Related papers

• Tunable photon scattering by an atom dimer coupled to a band edge of a photonic crystal waveguide [0.0]
  Quantum emitters trapped near photonic crystal waveguides have emerged as an exciting platform for realizing novel quantum matter-light interfaces. We study tunable photon scattering in a photonic crystal waveguide coupled to an atom dimer with an arbitrary spatial separation.
  arXiv  Detail & Related papers  (2024-09-30T13:57:58Z)
• Coherent Control of Collective Spontaneous Emission through Self-interference [1.0723935272906462]
  This work proposes an innovative scheme to coherently control collective emission rates via a self-interference mechanism in a nonlinear waveguide setting. The interference between two propagation pathways of the same photon leads to controllable superradiance and subradiance. An experimental setup based on superconducting transmission line resonators and transmon qubits is further proposed to realize controllable collective emission rates.
  arXiv  Detail & Related papers  (2022-04-04T08:58:31Z)
• Tunable Anderson Localization of Dark States [146.2730735143614]
  We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system. We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes. The experiment opens the door to the study of various localization phenomena on a new platform.
  arXiv  Detail & Related papers  (2021-05-25T07:52:52Z)
• 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)
• Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
  Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
  arXiv  Detail & Related papers  (2021-03-11T17:49:52Z)
• Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
  We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide. Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
  arXiv  Detail & Related papers  (2020-11-24T07:06:36Z)
• Quantum Borrmann effect for dissipation-immune photon-photon correlations [137.6408511310322]
  We study theoretically the second-order correlation function $g(2)(t)$ for photons transmitted through a periodic Bragg-spaced array of superconducting qubits, coupled to a waveguide. We demonstrate that photon bunching and anti-bunching persist much longer than both radiative and non-radiative lifetimes of a single qubit.
  arXiv  Detail & Related papers  (2020-09-29T14:37:04Z)
• 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)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)

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.