Stimulated emission of superradiant atoms in waveguide QED
- URL: http://arxiv.org/abs/2203.06943v1
- Date: Mon, 14 Mar 2022 09:15:05 GMT
- Title: Stimulated emission of superradiant atoms in waveguide QED
- Authors: Rui Asaoka, Julio Gea-Banacloche, Yuuki Tokunaga, and Kazuki Koshino
- Abstract summary: We provide an analytical result when a short $pi$ pulse is incident, which shows that the atoms emit photons coherently into the output pulse.
An incident pulse is amplified in phase-preserving manner, where noise is added almost entirely in the phase direction in phase space.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate the stimulated emission of superradiant atoms coupled to a
waveguide induced by a coherent-state photon pulse. We provide an analytical
result when a short $\pi$ pulse is incident, which shows that the atoms emit
photons coherently into the output pulse, which remains a coherent state in the
short pulse limit. An incident pulse is amplified in phase-preserving manner,
where noise is added almost entirely in the phase direction in phase space.
This property improves the ratio of intensity signal to noise after the
amplification for sufficiently short pulses. This is a unique feature different
from general phase-preserving linear amplifiers, where the signal-to-noise
ratio deteriorates in the amplification process. We also discuss the dependence
of the photon-emission probability on pulse parameters, such as the pulse area
and the duration.
Related papers
- Many-photon scattering and entangling in a waveguide with a
{\Lambda}-type atom [55.2480439325792]
We show that after transmission of a short few-photon pulse, the final state of the atom and all the photons is a genuine multipartite entangled state belonging to the W class.
The parameters of the input pulse are optimized to maximize the efficiency of three- and four-partite W-state production.
arXiv Detail & Related papers (2023-09-25T09:06:28Z) - Two-photon pulse scattering spectroscopy for arrays of two-level atoms,
coupled to the waveguide [125.99533416395765]
We have theoretically studied the scattering of two-photon pulses from a spatially-separated array of two-level atoms coupled to a waveguide.
The contributions of various single-eigenstate and double-excited eigenstates of the array have been analyzed.
arXiv Detail & Related papers (2023-02-27T22:05:07Z) - Resonant Parametric Photon Generation in Waveguide-coupled Quantum Emitter Arrays [83.88591755871734]
We have developed a theory of parametric photon generation in the waveguides coupled to arrays of quantum emitters with temporally modulated resonance frequencies.
Such generation can be interpreted as a dynamical Casimir effect.
We demonstrate numerically and analytically how the emission directionality and photon-photon correlations can be controlled by the phases of the modulation.
arXiv Detail & Related papers (2023-02-24T18:07:49Z) - Heisenberg treatment of multiphoton pulses in waveguide QED with
time-delayed feedback [62.997667081978825]
We propose a projection onto a complete set of states in the Hilbert space to decompose the multi-time correlations into single-time matrix elements.
We consider the paradigmatic example of a two-level system that couples to a semi-infinite waveguide and interacts with quantum light pulses.
arXiv Detail & Related papers (2021-11-04T12:29:25Z) - Generation of entanglement between a highly wave-packet-tunable photon
and a spin-wave memory in cold atoms [14.228823912825142]
We demonstrate control of waveform length of the photon entangled with an atomic memory.
Bell parameter S as a function of the duration of photon pulse is measured.
We confirm that the increase in photon noise probability per pulse with the pulse-duration is responsible for the S decrease.
arXiv Detail & Related papers (2021-10-31T02:49:24Z) - Active resonator depletion with short microwave pulses [0.0]
We discuss the conditions for matching the amplitude and phase of the pulse optimally within the framework of the model.
We consider how to deal with pulses and transient dynamics within the input-output formalism.
arXiv Detail & Related papers (2021-10-21T15:01:37Z) - Probing Electron-Hole Coherence in Strongly-Driven Solids [2.2182171526013774]
High-harmonic generation (HHG) is a coherent optical process in which the incident photon energy is up-converted to the multiples of its initial energy.
In solids, under the influence of a strong laser field, electron-hole (e-h) pairs are generated and subsequently driven to high energy and momentum.
arXiv Detail & Related papers (2021-09-09T18:39:51Z) - Transient dynamics of the quantum light retrieved from Rydberg
polaritons [0.0]
We show that the value of the second-order autocorrelation function of the transmitted light strongly depends on the position within the pulse.
We derive a theoretical model that quantitatively predicts our results and explains the physical behavior involved.
We show that by selecting only the last part of the transmitted pulse, the single photons show an antibunching parameter as low as 0.12 and a generation efficiency per trial larger than possible.
arXiv Detail & Related papers (2020-11-25T08:51:24Z) - Phase randomness in a gain-switched semiconductor laser: stochastic
differential equation analysis [55.41644538483948]
We performed theoretical analysis of the phase randomness in a gain-switched semiconductor laser in the context of its application as a quantum entropy source.
Numerical simulations demonstrate that phase diffusion r.m.s. exhibits non-linear dependence on the bias current.
It is shown that phase diffusion between laser pulses cannot always be assumed to exhibit required efficiency.
arXiv Detail & Related papers (2020-11-20T13:35:35Z) - Strongly entangled system-reservoir dynamics with multiphoton pulses
beyond the two-excitation limit: Exciting the atom-photon bound state [62.997667081978825]
We study the non-Markovian feedback dynamics of a two-level system interacting with the electromagnetic field inside a semi-infinite waveguide.
We compare the trapped excitation for an initially excited quantum emitter and an emitter prepared via quantized pulses containing up to four photons.
arXiv Detail & Related papers (2020-11-07T12:56:16Z)
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.