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Journal of the Optical Society of America B

Coherent manipulation of single-photon propagation in a one-dimensional waveguide with multiple Λ-type periodically arrayed atoms

Xiangyang Yu, Jianhong Li

Published Jan 7, 2016• 8 citations
Publisher

Abstract

Coherent manipulation of a single photon’s propagation behaviors is investigated theoretically through fully utilizing the external coherent driving fields exerted into a one-dimensional optical waveguide system with multiple three-level Λ-type periodically arrayed atoms. It is explicitly shown that the transmission amplitude can be changed arbitrarily and dramatically between one and zero as well as maintain a large-scale steady threshold by constructing the corresponding transition pathways. This characteristic presented above demonstrates that the external controllable tool can perform efficiently as a useful large-scale functional gate to engineer the photon’s propagation behavior such as determinedly targeting its travelling direction, which could have some potential applications in the multi-dimensional quantum network.

DOI
10.1364/josab.33.000165

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Coherent manipulation of a single photon’s propagation behaviors is investigated theoretically through fully utilizing the external coherent driving fields exerted into a one-dimensional optical waveguide system with multiple three-level Λ-type periodically arrayed atoms. It is explicitly shown that the transmission amplitude can be changed arbitrarily and dramatically between one and zero as well as maintain a large-scale steady threshold by constructing the corresponding transition pathways. This characteristic presented above demonstrates that the external controllable tool can perform efficiently as a useful large-scale functional gate to engineer the photon’s propagation behavior such as determinedly targeting its travelling direction, which could have some potential applications in the multi-dimensional quantum network.
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We study the dynamics of the single-photon pulse (SPP) propagating through a pair of V-type three-level atoms coupled to a one-dimensional (1D) waveguide. The time evolutions of the two atoms can be influenced by the phase difference of the two external fields driving the atoms. We show that the SPP unidirectional propagation in the 1D waveguide can be controlled by the phase difference of the two external fields, and the rectifying efficiency increases as the bandwidth of the SPP decreases. The system can serve as the basis of all-optical devices, such as optical diode, optical isolator and optical rectifier.
All-optical manipulation of a single-photon quantum transport is of fundamental importance in quantum nanophotonics. Here, a system consisting of a single-mode waveguide coupling with a V-type three-level atom is proposed, where two excited states of the atom are strongly driven by the external coherent field. Transmission and reflection spectra for the output photon at different frequency components, including virtual transitions induced by the ultrastrong driving, are calculated. The interaction between the waveguide photon and the driven atom experiences quantum interferences, which leads to a variety of capabilities for manipulating the single-photon transport in the spectral domain. We perform simulations to demonstrate the possibilities of achieving desired frequency conversions as well as generating different correlated single-photon states by using external drive field at chosen strength. Our work therefore studies the single-photon transport in a strongly driven atom–waveguide system and shows applications for all-optically manipulating the single photon in the field of quantum information processing.
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 examine a quantum routing mechanism utilizing a giant-atom-like array coupled to two one-dimensional waveguides. The giant-atom-like array is formed by a one-dimensional array of three-level-systems. In the regime of strong atom-waveguide coupling and weak inter-atomic interactions, this system functions as an efficient and directionally controllable single-photon router. Our analysis shows that the routing behavior is influenced by effective phase accumulation and interference effects, which can be adjusted by varying the number of coupling sites NNN, the photon energy EEE, and the inter-atomic coupling strength JJJ. Importantly, we identify configurations that enable perfect photon transfer (100%100 \%100% efficiency) over a wide range of energies and that provide dynamic control over the output channel. In addition, we investigate how the system responds to changes in its internal parameters, demonstrating the robustness and scalability of routing performance. These findings underscore the potential of this setup for implementation in reconfigurable and integrated quantum photonic networks.
We theoretically investigate coherent controlling single photon transport in one-dimensional waveguide coupled to a giant atom interacting with a resonator. The giant atom is considered as a Λ-type system. One transition of the atom couples to the waveguide and the other one is driven by the resonator. Single photon scattering amplitudes are calculated for three kinds of coupling schematics, respectively. Both the analytical and numerical results show that single photon scattering properties can be manipulated by adjusting the size of the giant atom, the coupling strengths of the waveguide-resonator and resonator-giant atom. Specifically, the transmission spectra exhibit two Rabi-splitting dips and the locations of the dips are strongly dependent on the size of the giant atom (GA). It also shows that the resonant single photon can be tuned from being transmitted to being reflected by controlling the coupling strength. Our results may find applications in designing quantum devices based on giant atom at single-photon level.