Resonant and phonon-assisted ultrafast coherent control of a single hBN
color center
- URL: http://arxiv.org/abs/2205.04780v1
- Date: Tue, 10 May 2022 10:01:48 GMT
- Title: Resonant and phonon-assisted ultrafast coherent control of a single hBN
color center
- Authors: Johann A. Preu{\ss}, Daniel Groll, Robert Schmidt, Thilo Hahn,
Pawe{\l} Machnikowski, Rudolf Bratschitsch, Tilmann Kuhn, Steffen Michaelis
de Vasconcellos, Daniel Wigger
- Abstract summary: We demonstrate coherent state manipulation of a single hBN color center with ultrafast laser pulses.
Our results pave the way for ultrafast phonon quantum state control on the nanoscale.
- Score: 0.9780978323141835
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Single-photon emitters in solid-state systems are important building blocks
for scalable quantum technologies. Recently, quantum light emitters have been
discovered in the wide-gap van der Waals insulator hBN. These color centers
have attracted considerable attention due to their quantum performance at
elevated temperatures and wide range of transition energies. Here, we
demonstrate coherent state manipulation of a single hBN color center with
ultrafast laser pulses and investigate in our joint experiment-theory study the
coupling between the electronic system and phonons. We demonstrate that
coherent control can not only be performed resonantly on the optical transition
giving access to the decoherence but also phonon-assisted, which reveals the
internal phonon quantum dynamics. In the case of optical phonons we measure
their decoherence, stemming in part from their anharmonic decay. Dephasing
induced by the creation of acoustic phonons manifests as a rapid decrease of
the coherent control signal when traveling phonon wave packets are emitted.
Furthermore, we demonstrate that the quantum superposition between a
phonon-assisted process and the resonant excitation causes ultrafast
oscillations of the coherent control signal. Our results pave the way for
ultrafast phonon quantum state control on the nanoscale and open up a new
promising perspective for hybrid quantum technologies.
Related papers
- Photon bunching in high-harmonic emission controlled by quantum light [0.0]
Recent theories have laid the groundwork for understanding how quantum-optical properties affect high-field photonics.
We demonstrate a new experimental approach that transduces some properties of a quantum-optical state through a strong-field nonlinearity.
Our results suggest that perturbing strong-field dynamics with quantum-optical states is a viable way to coherently control the generation of these states at short wavelengths.
arXiv Detail & Related papers (2024-04-08T12:53:42Z) - Band Gap Engineering and Controlling Transport Properties of Single
Photons in Periodic and Disordered Jaynes-Cummings Arrays [0.0]
We study the single photon transport properties in periodic and position-disordered Jaynes-Cummings arrays.
In the disordered case, we find that the single photon transmission curves show the disappearance of band formation.
The results of this work may find application in the study of quantum many-body effects in the optical domain.
arXiv Detail & Related papers (2024-01-26T22:32:21Z) - Coherent Coupling of a Diamond Tin-Vacancy Center to a Tunable Open
Microcavity [0.0]
We present a quantum photonic interface based on a single Tin-Vacancy center in a micrometer-thin diamond membrane coupled to a tunable open microcavity.
We observe a transmission dip of 50 % for low incident photon number per Purcell-reduced excited state lifetime, while the dip disappears as the emitter is saturated with higher photon number.
This work establishes a versatile and tunable platform for advanced quantum optics experiments and proof-of-principle demonstrations towards quantum networking with solid-state qubits.
arXiv Detail & Related papers (2023-11-14T19:00:02Z) - Many-body cavity quantum electrodynamics with driven inhomogeneous
emitters [2.745127037087037]
We study how a large, inhomogeneously broadened ensemble of solid-state emitters coupled with high cooperativity to a nanophotonic resonator behaves under strong excitation.
We discover a sharp, collectively induced transparency (CIT) in the cavity reflection spectrum, resulting from quantum interference and collective response induced by the interplay between driven inhomogeneous emitters and cavity photons.
These phenomena in the many-body cQED regime enable new mechanisms for achieving slow light and frequency referencing, pave a way towards solid-state superradiant lasers and inform the development of ensemble-based quantum interconnects.
arXiv Detail & Related papers (2022-08-08T18:06:08Z) - Slowing down light in a qubit metamaterial [98.00295925462214]
superconducting circuits in the microwave domain still lack such devices.
We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide.
Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
arXiv Detail & Related papers (2022-02-14T20:55:10Z) - Tailoring the degree of entanglement of two coherently coupled quantum
emitters [0.0]
Controlled molecular entanglement can serve as a test-bench to decipher more complex physical or biological mechanisms governed by the coherent coupling.
We implement hyperspectral imaging to identify pairs of coupled organic molecules trapped in a low temperature matrix.
We also demonstrate far-field selective excitation of the long-lived subradiant delocalized states with a laser field tailored in amplitude and phase.
arXiv Detail & Related papers (2021-09-22T08:30:59Z) - 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) - Coherent control in the ground and optically excited state of an
ensemble of erbium dopants [55.41644538483948]
Ensembles of erbium dopants can realize quantum memories and frequency converters.
In this work, we use a split-ring microwave resonator to demonstrate such control in both the ground and optically excited state.
arXiv Detail & Related papers (2021-05-18T13:03:38Z) - 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) - Optical repumping of resonantly excited quantum emitters in hexagonal
boron nitride [52.77024349608834]
We present an optical co-excitation scheme which uses a weak non-resonant laser to reduce transitions to a dark state and amplify the photoluminescence from quantum emitters in hexagonal boron nitride (hBN)
Our results are important for the deployment of atom-like defects in hBN as reliable building blocks for quantum photonic applications.
arXiv Detail & Related papers (2020-09-11T10:15:22Z) - Mechanical Decoupling of Quantum Emitters in Hexagonal Boron Nitride
from Low-Energy Phonon Modes [52.77024349608834]
Quantum emitters in hexagonal Boron Nitride (hBN) were recently reported to hol a homogeneous linewidth according to the Fourier-Transform limit up to room temperature.
This unusual observation was traced back to decoupling from in-plane phonon modes which can arise if the emitter is located between two planes of the hBN host material.
arXiv Detail & Related papers (2020-04-22T20:00:49Z)
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.