Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by
Ultrafast Four-Wave Mixing Spectroscopy
- URL: http://arxiv.org/abs/2304.10148v1
- Date: Thu, 20 Apr 2023 08:14:45 GMT
- Title: Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by
Ultrafast Four-Wave Mixing Spectroscopy
- Authors: Daniel Wigger, Johannes Schall, Marielle Deconinck, Nikolai Bart,
Pawe{\l} Mrowi\'nski, Mateusz Krzykowski, Krzysztof Gawarecki, Martin von
Helversen, Ronny Schmidt, Lucas Bremer, Frederik Bopp, Dirk Reuter, Andreas
D. Wieck, Sven Rodt, Julien Renard, Gilles Nogues, Arne Ludwig, Pawe{\l}
Machnikowski, Jonathan J. Finley, Stephan Reitzenstein, Jacek Kasprzak
- Abstract summary: We report on the first demonstration of a coherently controlled inter-dot tunnel-coupling.
We use ultrafast four-wave mixing spectroscopy to generate a quantum coherence in one trion complex, transfer it to and probe it in another trion configuration.
With the help of theoretical modelling on different levels of complexity we give an instructive explanation of the underlying coupling mechanism and dynamical processes.
- Score: 0.3586100057780835
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Semiconductor quantum dot molecules are considered as promising candidates
for quantum technological applications due to their wide tunability of optical
properties and coverage of different energy scales associated with charge and
spin physics. While previous works have studied the tunnel-coupling of the
different excitonic charge complexes shared by the two quantum dots by
conventional optical spectroscopy, we here report on the first demonstration of
a coherently controlled inter-dot tunnel-coupling focusing on the quantum
coherence of the optically active trion transitions. We employ ultrafast
four-wave mixing spectroscopy to resonantly generate a quantum coherence in one
trion complex, transfer it to and probe it in another trion configuration. With
the help of theoretical modelling on different levels of complexity we give an
instructive explanation of the underlying coupling mechanism and dynamical
processes.
Related papers
- Quantum theory of non-hermitian optical binding between nanoparticles [0.0]
Recent experiments demonstrate highly tunable non-reciprocal coupling between levitated nanoparticles due to optical binding.
We show how to reach non-reciprocal and unidirectional coupling, and identify unique quantum signatures of optical binding.
arXiv Detail & Related papers (2023-06-20T21:15:19Z) - Continuous-variable quantum optics and resource theory for ultrafast
semiconductor spectroscopy [0.0]
We focus on multichannel homodyne detection as a powerful tool to measure the quantum coherence and the full density matrix of a polariton system.
By monitoring the temporal decay of quantum coherence in the polariton condensate, we observe coherence times exceeding the nanosecond scale.
The combination of tailored resource quantifiers and ultrafast spectroscopy techniques presented here paves the way for future applications of quantum information technologies.
arXiv Detail & Related papers (2023-06-02T13:56:47Z) - Resonance fluorescence of a chiral artificial atom [0.28675177318965034]
We demonstrate a superconducting artificial atom with strong unidirectional coupling to a microwave photonic waveguide.
Our demonstration puts forth a superconducting hardware platform for the realization of several key functionalities pursued within the paradigm of chiral quantum optics.
arXiv Detail & Related papers (2022-12-21T22:59:43Z) - Trapped-Ion Quantum Simulation of Collective Neutrino Oscillations [55.41644538483948]
We study strategies to simulate the coherent collective oscillations of a system of N neutrinos in the two-flavor approximation using quantum computation.
We find that the gate complexity using second order Trotter- Suzuki formulae scales better with system size than with other decomposition methods such as Quantum Signal Processing.
arXiv Detail & Related papers (2022-07-07T09:39:40Z) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces.
With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
arXiv Detail & Related papers (2022-03-28T19:37:08Z) - Cooperative quantum phenomena in light-matter platforms [0.34376560669160383]
cooperativity is evident in light-matter platforms where quantum emitter ensembles are interfaced with confined optical modes.
This tutorial provides a set of theoretical tools to tackle the behavior responsible for the onset of cooperativity.
arXiv Detail & Related papers (2021-07-06T15:27:23Z) - 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) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z) - Coupling colloidal quantum dots to gap waveguides [62.997667081978825]
coupling between single photon emitters and integrated photonic circuits is an emerging topic relevant for quantum information science and other nanophotonic applications.
We investigate the coupling between a hybrid system of colloidal quantum dots and propagating gap modes of a silicon nitride waveguide system.
arXiv Detail & Related papers (2020-03-30T21:18:27Z) - All-order momentum correlations of three ultracold bosonic atoms
confined in triple-well traps: Signatures of emergent many-body quantum phase
transitions and analogies with three-photon quantum-optics interference [0.0]
All-order momentum correlation functions associated with the time-of-flight spectroscopy of three spinless ultracold bosonic interacting neutral atoms are presented.
Our investigations target matter-wave interference of massive particles, aiming at characterizing the quantum states of trapped manifested or repulsively interacting ultracold particles.
arXiv Detail & Related papers (2020-02-02T03:23:38Z)
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.