Photonic simulation of giant atom decay
- URL: http://arxiv.org/abs/2008.06533v1
- Date: Fri, 14 Aug 2020 18:33:04 GMT
- Title: Photonic simulation of giant atom decay
- Authors: Stefano Longhi
- Abstract summary: We suggest a photonic simulation of non-Markovian giant atom decay based on light escape dynamics in an optical waveguide non-locally-coupled to a waveguide lattice.
Major effects such as non-exponential decay, enhancement or slowing down of the decay, and formation of atom-field dark states can be emulated in this system.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Spontaneous emission of an excited atom in a featureless continuum of
electromagnetic modes is a fundamental process in quantum electrodynamics
associated with an exponential decay of the quantum emitter to its ground state
accompanied by an irreversible emission of a photon. However, such a simple
scenario is deeply modified when considering a $^{\prime}$giant$^{\prime}$
atom, i.e an atom whose dimension is larger than the wavelength of the emitted
photon. In such an unconventional regime, non-Markovian effects and strong
deviations from an exponential decay are observed owing to interference effects
arising from non-local light-atom coupling. Here we suggest a photonic
simulation of non-Markovian giant atom decay, based on light escape dynamics in
an optical waveguide non-locally-coupled to a waveguide lattice. Major effects
such as non-exponential decay, enhancement or slowing down of the decay, and
formation of atom-field dark states can be emulated in this system
Related papers
- Conversion of twistedness from light to atoms [0.0]
We show that in the inelastic collision of a photon and an atom, the twisted state of the photon is transferred to the center-of-mass state.
We also show that, depending on the experimental conditions, the twistedness of the photon is either transferred to the atomic center-of-mass quantum state or modifies the selection rule for the bound electron transition.
arXiv Detail & Related papers (2024-04-17T17:00:47Z) - 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) - Giant-Atom Effects on Population and Entanglement Dynamics of Rydberg
Atoms [2.8899691390187794]
Giant atoms are attracting interest as an emerging paradigm in the quantum optics of engineered waveguides.
We propose to realize a synthetic giant atom working in the optical regime starting from a pair of interacting Rydberg atoms.
Our findings may be relevant to quantum information processing, besides broadening the giant-atom waveguide physics with optically driven natural atoms.
arXiv Detail & Related papers (2023-04-28T09:32:04Z) - 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) - 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) - Quantum-limited millimeter wave to optical transduction [50.663540427505616]
Long distance transmission of quantum information is a central ingredient of distributed quantum information processors.
Current approaches to transduction employ solid state links between electrical and optical domains.
We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
arXiv Detail & Related papers (2022-07-20T18:04:26Z) - Quantum density matrix theory for a laser without adiabatic elimination
of the population inversion: transition to lasing in the class-B limit [62.997667081978825]
No class-B quantum density-matrix model is available to date, capable of accurately describing coherence and photon correlations within a unified theory.
Here we carry out a density-matrix theoretical approach for generic class-B lasers, and provide closed equations for the photonic and atomic reduced density matrix in the Fock basis of photons.
This model enables the study of few-photon bifurcations and non-classical photon correlations in class-B laser devices, also leveraging quantum descriptions of coherently coupled nanolaser arrays.
arXiv Detail & Related papers (2022-05-26T16:33:51Z) - Ultrastrong waveguide QED with giant atoms [0.0]
We extend the theory of giant atoms to deal with the ultrastrong coupling regime.
We show that virtual photons dressing the ground state are non-exponentially localized around the contact points but decay as a power-law.
arXiv Detail & Related papers (2022-05-16T18:01:13Z) - Down-conversion of a single photon as a probe of many-body localization [0.0]
In a non-linear medium, even a single photon would decay by down-converting (splitting) into lower frequency photons with the same total energy.
In this case, the photon's fate becomes the long-standing question of many-body localization (MBL)
Our result introduces a new platform to explore fundamentals of MBL without having to control many atoms or qubits.
arXiv Detail & Related papers (2022-03-31T17:11:12Z) - Correlations between cascaded photons from spatially localized
biexcitons in ZnSe [55.41644538483948]
We demonstrate a radiative cascade from the decay of a biexciton at an impurity-atom complex in aSe quantum well.
Our result establishes impurity atoms inSe as a potential platform for photonic quantum technologies using radiative cascades.
arXiv Detail & Related papers (2022-03-11T23:15:37Z) - Inelastic scattering of a photon by a quantum phase-slip [0.0]
We show that a quantum phase-slip fluctuation in high-impedance superconducting waveguides can split a single microwave photon into a large number of lower-energy photons.
The measured decay rates are explained without adjustable parameters in the framework of a new model of a quantum impurity in a Luttinger liquid.
arXiv Detail & Related papers (2020-10-05T15:35:21Z)
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.