Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence
in a Single CdSe/ZnSe Quantum Dot
- URL: http://arxiv.org/abs/2011.10393v2
- Date: Wed, 13 Jan 2021 12:52:25 GMT
- Title: Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence
in a Single CdSe/ZnSe Quantum Dot
- Authors: Philipp Henzler, Christian Traum, Matthias Holtkemper, David Nabben,
Marcel Erbe, Doris E. Reiter, Tilmann Kuhn, Suddhassatta Mahapatra, Karl
Brunner, Denis V. Seletskiy, and Alfred Leitenstorfer
- Abstract summary: Biexcitonic induced absorption reveals quantum beats between hot trion states at 133 GHz.
Interband dephasing is dominated by relaxation of the P-shell hole within 390 fs.
Trionic coherence remains stored in the spin system for 85 ps due to Pauli blocking of the triplet electron.
- Score: 2.3275555443501488
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Ultrafast transmission changes around the fundamental trion resonance are
studied after exciting a p-shell exciton in a negatively charged II-VI quantum
dot. The biexcitonic induced absorption reveals quantum beats between hot trion
states at 133 GHz. While interband dephasing is dominated by relaxation of the
P-shell hole within 390 fs, trionic coherence remains stored in the spin system
for 85 ps due to Pauli blocking of the triplet electron. The complex
spectro-temporal evolution of transmission is explained analytically by solving
the Maxwell-Liouville equations. Pump and probe polarizations provide full
control over amplitude and phase of the quantum beats.
Related papers
- Dipole coupling of a bilayer graphene quantum dot to a high-impedance
microwave resonator [0.14908922253160745]
superconducting microwave resonator with a double quantum dot electrostatically defined in a graphene-based van der Waals heterostructure.
We achieve sensitive and fast detection with a signal-to-noise ratio of 3.5 within 1 $mumathrms$ integration time.
Our results introduce cQED as a probe for quantum dots in van der Waals materials and indicate a path toward coherent charge-photon coupling with bilayer graphene quantum dots.
arXiv Detail & Related papers (2023-12-22T11:59:20Z) - A quantum dot coupled to a suspended-beam mechanical resonator: from the
unresolved- to the resolved-sideband regime [2.116339958735258]
We present experiments in which self-assembled InAs quantum dots are coupled to a thin, suspended-beam GaAs resonator.
The quantum dots are driven resonantly and the resonance fluorescence is detected.
We show that one quantum dot couples to eight mechanical modes spanning a frequency range from $30$ to $600mathrmMHz$: one quantum dot provides an extensive characterisation of the mechanical resonator.
arXiv Detail & Related papers (2023-11-09T13:28:52Z) - Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by
Ultrafast Four-Wave Mixing Spectroscopy [0.3586100057780835]
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.
arXiv Detail & Related papers (2023-04-20T08:14:45Z) - Quantum vortices of strongly interacting photons [52.131490211964014]
Vortices are hallmark of nontrivial dynamics in nonlinear physics.
We report on the realization of quantum vortices resulting from a strong photon-photon interaction in a quantum nonlinear optical medium.
For three photons, the formation of vortex lines and a central vortex ring attests to a genuine three-photon interaction.
arXiv Detail & Related papers (2023-02-12T18:11:04Z) - Three-photon excitation of quantum two-level systems [0.0]
We demonstrate that semiconductor quantum dots can be excited efficiently in a resonant three-photon process.
Time-dependent Floquet theory is used to quantify the strength of the multi-photon processes.
We exploit this technique to probe intrinsic properties of InGaN quantum dots.
arXiv Detail & Related papers (2022-02-04T09:20:24Z) - Phonon dephasing and spectral diffusion of quantum emitters in hexagonal
Boron Nitride [52.915502553459724]
Quantum emitters in hexagonal boron nitride (hBN) are emerging as bright and robust sources of single photons for applications in quantum optics.
We study phonon dephasing and spectral diffusion of quantum emitters in hBN via resonant excitation spectroscopy at cryogenic temperatures.
arXiv Detail & Related papers (2021-05-25T05:56:18Z) - 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) - Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition.
The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model.
A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
arXiv Detail & Related papers (2020-11-07T11:18:24Z) - Theory of waveguide-QED with moving emitters [68.8204255655161]
We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace.
We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
arXiv Detail & Related papers (2020-03-20T12:14:10Z) - Optical Magnetometer: Quantum Resonances at pumping repetition rate of
1/n of the Larmor frequency [58.720142291102135]
Quantum sub-resonances at a repetition rate of $1/n$ of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained.
Investigations in single alkali atoms cells as well as mixed alkali atoms of K and Rb are presented.
arXiv Detail & Related papers (2020-02-20T09:14:56Z) - 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.