Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Results in Optics

Single-photon pulse transport in a waveguide coupled with a quantum system

Adam Sulieman Ibrahim Abdalla, Suliman Alameen, Mohamed Saeid Gabreel Hamed, Mohamed Hassan Eisa, Osamah A. Aldaghri

Published Nov 1, 2020• 1 citation
Publisher

Abstract

We study the transmission and reflection properties of a single-photon pulse in a one-dimensional waveguide side coupled with a Jaynes-Cummings system, namely, a multi-cavity with an embedded Rydberg atom. A Single-photon pulse is applied to tune the atoms energy spectrum, and varying it can bring the atomic qubit transition on or off-resonance for the cavity. The transmission and reflection behavior are systematically explored by a real-space model Hamiltonian and we find that the coupling strength between the waveguide and the side optical cavity exerts a tremendous impact on it. The influence of cavity and atomic dissipations and the incident pulse width on the transport properties of the single-photon is also investigated simultaneously. Based on these phenomena, we point out the possibility of utilizing this system as a single-photon transport in practice and has potential applications in quantum information.

DOI
10.1016/j.rio.2020.100026

Related papers

Transmission and correlation of a two-photon pulse in a one-dimensional waveguide coupled with quantum emitters

Qingmei Hu, Bingsuo Zou, Yongyou Zhang

Transmission and correlation properties of a two-photon pulse are studied in a one-dimensional waveguide (1DW) in the presence of three types of quantum emitters: two-level atom (TLA), side optical cavity (SOC), and Jaynes-Cummings model (JCM). Since there are many plane-wave components for a two-photon pulse, a nonlinear waveguide dispersion is used instead of the linearized one. The two-photon transmission spectra become flatter with decreasing the pulse width. With respect to the $\ensuremath{\delta}$ coupling between the 1DW and quantum emitter the transmission dips show a blueshift for the non-$\ensuremath{\delta}$ one and the blueshift first increases and then decreases with increasing the width of the coupling. The TLA and JCM can induce an effective photon-photon interaction that depends on the distance between the two photons, while the SOC cannot. We show that the 1DW coupled with the TLA or JCM is able to evaluate the overlap of the two photons and that the non-$\ensuremath{\delta}$ coupling has potential for controlling the two-photon correlation.

Physical Review A•Mar 26, 2018•13 citations

Tailoring optical pulse transport in a two-mode waveguide coupled with a quantum system

Adam Sulieman Ibrahim Abdalla

The dynamics of a coherent wave packet traveling through a two-mode waveguide, coupled to a cavity embedded with a two-state quantum system, is analyzed. The guided coherent wave transmission and reflection coefficients, as well as the atom and cavity excitation amplitudes, are solved exactly via a real-space approach. We show that a two-point waveguide coupled to a Rydberg-atom hybrid system can tailor the waveform of the incident coherent pulse wave into other forms by controlling the coupling strength tuning between the waveguide, the cavity, and the atom. Tailoring involves modifying properties such as amplitude, phase, or spectral content based on the quantum system interaction. This phenomenon is different from the situation of the plane wave input, where the transmitted and reflected waves are the plane waves and the same to the incident one. Consequently, we provide an effective method that can be used to tailor pulse-wave propagation to enhance efficient quantum sensitivity in the field of ultrafast photonics devices.

APL Quantum•May 13, 2025•0 citations

Controllable single-photon transport mediated by a time-modulated Jaynes–Cummings model

Hao-Zhen Li, Lan Yang, Ran Zeng +5 more

Abstract Controllable single-photon scattering in a one-dimensional waveguide coupled to a Jaynes–Cummings structure containing a time-modulated two-level atom interacting with a single-mode cavity is investigated. The photon transmission and reflection amplitudes are calculated by using an effective Floquet Hamiltonian in real space. The results show that the coupling between the atom and the cavity mode can dynamically be tuned via periodically modulating the atomic transition frequency. As a consequence, the scattering behaviors of the waveguide photons can be actively manipulated, and a controllable single-photon switch with high on-off ratio could be realized. More interestingly, the switch works well within a wide frequency region, i.e., the transmission of both resonant and off-resonant waveguide photons can be effectively switched on or off with appropriate system parameters. Furthermore, the proposed dynamically tunable switching scheme is robust against atomic dissipation associated with the help of atom-cavity coupling mismatch. Such single-photon device can be used as an elementary unit for various quantum information processing.

Journal of Physics B Atomic Molecular and Optical Physics•Feb 28, 2024•1 citation

Single microwave photon switch controlled by an external electrostatic field

Qian Jiang, Qingmei Hu, Bingsuo Zou +1 more

We design a single microwave photon switch through a one-dimensional waveguide coupled with a side Jaynes-Cummings system, namely, a single-mode cavity with an embedded Rydberg atom $^{87}\mathrm{Rb}$. Since the energy spectra of the $^{87}\mathrm{Rb}$ atom depend on the electrostatic field, the $^{87}\mathrm{Rb}$ atom can couple with the cavity in tune and out of tune, corresponding to the switch on and off states, respectively. The influences of the single photon pulse width, cavity dissipation, and Rabi coupling on the on/off ratio are studied in detail by a non-Hermitian Hamiltonian. We find that the on/off ratio can be larger than 100 in a wide parameter space and the decay time and rise time are both about 0.75 ns. Within the master equation of the density matrix we also demonstrate that the on/off ratio can be reduced by the quantum noise but is still large enough for application. The transition energy of the two-level Rydberg atom $^{87}\mathrm{Rb}$ gives the switch operating frequency which is in the range of microwave regime. Accordingly, the switch is viable in practice and has potential in quantum informatics.

Physical Review A•Aug 15, 2018•14 citations

Propagation of a Single Photon in a 1-D Waveguide Coupled to a V-Type Atom

Saad Jaddua

The area of waveguide quantum electrodynamics plays a signi cant role in many quantum technology applications. Photonic waveguides can be used to coherently transport photon pulses and can also efficiently increase the light-matter interaction strength. The work is done by Shen and Fan [1, 2] on the propagation of a photon pulse in a 1-D waveguide coupled to a single two-level emitter shows that a photon pulse can undergo complete reflection or transmission through the waveguide by controlling the coupling strength between the atom and the guided photon. We propose a V-type atomic system embedded in a 1-D waveguide and study the properties of an incoming photon pulse in the waveguide. We show that the driving field, which couples one of the atomic transitions, can be used as a controlling parameter to allow the photon pulse to be reflected or transmitted through the waveguide. As there reflection and transmission of the incident photon pulse can be externally controlled in our system, in comparison to the system suggested by Shen and Fan [1, 2], the proposed system in this thesis is more practiced than the system [1, 2]

•Jul 31, 2020•0 citations

Controllable single-photon transport in a one-dimensional coupled-resonator waveguide coupled to two nanocavities interacting with atoms

Wenan Li, Xiaoshi Li, Jin-Jiang Huang +3 more

We investigate controllable single-photon transport in a one-dimensional coupled-resonator waveguide coupled to two nanocavities interacting with atoms. The reflection and transmission coefficients for a single photon propagating in such a system are deduced by using the discrete coordinates approach. The resonator–nanocavity coupling strength, atom–nanocavity coupling coefficient, and the detuning between the incident photon and the atom, respectively, which affect the transport properties of the single photon, are analyzed. It is found that some useful information, such as the atom–nanocavity coupling strength, can be extracted from the single-photon transmission spectrum under proper parameter settings. We also study how the coupling between two nanocavities affects the single-photon transmission property.

Journal of the Optical Society of America B•Dec 9, 2016•3 citations
We study the transmission and reflection properties of a single-photon pulse in a one-dimensional waveguide side coupled with a Jaynes-Cummings system, namely, a multi-cavity with an embedded Rydberg atom. A Single-photon pulse is applied to tune the atoms energy spectrum, and varying it can bring the atomic qubit transition on or off-resonance for the cavity. The transmission and reflection behavior are systematically explored by a real-space model Hamiltonian and we find that the coupling strength between the waveguide and the side optical cavity exerts a tremendous impact on it. The influence of cavity and atomic dissipations and the incident pulse width on the transport properties of the single-photon is also investigated simultaneously. Based on these phenomena, we point out the possibility of utilizing this system as a single-photon transport in practice and has potential applications in quantum information.
Transmission and correlation properties of a two-photon pulse are studied in a one-dimensional waveguide (1DW) in the presence of three types of quantum emitters: two-level atom (TLA), side optical cavity (SOC), and Jaynes-Cummings model (JCM). Since there are many plane-wave components for a two-photon pulse, a nonlinear waveguide dispersion is used instead of the linearized one. The two-photon transmission spectra become flatter with decreasing the pulse width. With respect to the $\ensuremath{\delta}$ coupling between the 1DW and quantum emitter the transmission dips show a blueshift for the non-$\ensuremath{\delta}$ one and the blueshift first increases and then decreases with increasing the width of the coupling. The TLA and JCM can induce an effective photon-photon interaction that depends on the distance between the two photons, while the SOC cannot. We show that the 1DW coupled with the TLA or JCM is able to evaluate the overlap of the two photons and that the non-$\ensuremath{\delta}$ coupling has potential for controlling the two-photon correlation.
The dynamics of a coherent wave packet traveling through a two-mode waveguide, coupled to a cavity embedded with a two-state quantum system, is analyzed. The guided coherent wave transmission and reflection coefficients, as well as the atom and cavity excitation amplitudes, are solved exactly via a real-space approach. We show that a two-point waveguide coupled to a Rydberg-atom hybrid system can tailor the waveform of the incident coherent pulse wave into other forms by controlling the coupling strength tuning between the waveguide, the cavity, and the atom. Tailoring involves modifying properties such as amplitude, phase, or spectral content based on the quantum system interaction. This phenomenon is different from the situation of the plane wave input, where the transmitted and reflected waves are the plane waves and the same to the incident one. Consequently, we provide an effective method that can be used to tailor pulse-wave propagation to enhance efficient quantum sensitivity in the field of ultrafast photonics devices.
Abstract Controllable single-photon scattering in a one-dimensional waveguide coupled to a Jaynes–Cummings structure containing a time-modulated two-level atom interacting with a single-mode cavity is investigated. The photon transmission and reflection amplitudes are calculated by using an effective Floquet Hamiltonian in real space. The results show that the coupling between the atom and the cavity mode can dynamically be tuned via periodically modulating the atomic transition frequency. As a consequence, the scattering behaviors of the waveguide photons can be actively manipulated, and a controllable single-photon switch with high on-off ratio could be realized. More interestingly, the switch works well within a wide frequency region, i.e., the transmission of both resonant and off-resonant waveguide photons can be effectively switched on or off with appropriate system parameters. Furthermore, the proposed dynamically tunable switching scheme is robust against atomic dissipation associated with the help of atom-cavity coupling mismatch. Such single-photon device can be used as an elementary unit for various quantum information processing.
We design a single microwave photon switch through a one-dimensional waveguide coupled with a side Jaynes-Cummings system, namely, a single-mode cavity with an embedded Rydberg atom 87Rb^{87}\mathrm{Rb}87Rb. Since the energy spectra of the 87Rb^{87}\mathrm{Rb}87Rb atom depend on the electrostatic field, the 87Rb^{87}\mathrm{Rb}87Rb atom can couple with the cavity in tune and out of tune, corresponding to the switch on and off states, respectively. The influences of the single photon pulse width, cavity dissipation, and Rabi coupling on the on/off ratio are studied in detail by a non-Hermitian Hamiltonian. We find that the on/off ratio can be larger than 100 in a wide parameter space and the decay time and rise time are both about 0.75 ns. Within the master equation of the density matrix we also demonstrate that the on/off ratio can be reduced by the quantum noise but is still large enough for application. The transition energy of the two-level Rydberg atom 87Rb^{87}\mathrm{Rb}87Rb gives the switch operating frequency which is in the range of microwave regime. Accordingly, the switch is viable in practice and has potential in quantum informatics.
The area of waveguide quantum electrodynamics plays a signi cant role in many quantum technology applications. Photonic waveguides can be used to coherently transport photon pulses and can also efficiently increase the light-matter interaction strength. The work is done by Shen and Fan [1, 2] on the propagation of a photon pulse in a 1-D waveguide coupled to a single two-level emitter shows that a photon pulse can undergo complete reflection or transmission through the waveguide by controlling the coupling strength between the atom and the guided photon. We propose a V-type atomic system embedded in a 1-D waveguide and study the properties of an incoming photon pulse in the waveguide. We show that the driving field, which couples one of the atomic transitions, can be used as a controlling parameter to allow the photon pulse to be reflected or transmitted through the waveguide. As there reflection and transmission of the incident photon pulse can be externally controlled in our system, in comparison to the system suggested by Shen and Fan [1, 2], the proposed system in this thesis is more practiced than the system [1, 2]
We investigate controllable single-photon transport in a one-dimensional coupled-resonator waveguide coupled to two nanocavities interacting with atoms. The reflection and transmission coefficients for a single photon propagating in such a system are deduced by using the discrete coordinates approach. The resonator–nanocavity coupling strength, atom–nanocavity coupling coefficient, and the detuning between the incident photon and the atom, respectively, which affect the transport properties of the single photon, are analyzed. It is found that some useful information, such as the atom–nanocavity coupling strength, can be extracted from the single-photon transmission spectrum under proper parameter settings. We also study how the coupling between two nanocavities affects the single-photon transmission property.