Quantum switch in coupled-resonator array: Controlling single-photon transport by the state of two-level system

2016 ◽  
Vol 30 (03) ◽  
pp. 1550262
Author(s):  
Xiao-Ke Qin
Keyword(s):  
Beam Splitter ◽  
Single Photon ◽  
The State ◽  
Destructive Interference ◽  
Level System ◽  
Superposition State ◽  
Constructive Interference ◽  
One Dimensional ◽  
Coherent Transport ◽  
Coupled Resonator

We present the model that two-level system (TLS) nonlocally interacts with one-dimensional coupled-resonator array (CRA). The coherent transport of single-photon inside CRA is well controlled by the state of TLS, which functions as quantum switch. Spin up and spin down correspond to switch on and switch off respectively, or vice versa, which originate from the constructive interference and the destructive interference of two coupling paths. We improve the fidelity of quantum switch by preadjusting the frequency of resonators which couple to TLS. Quantum switch realizes quantum beam splitter when TLS is in the superposition state. The single-photon wave packet would entangle with qubit and propagate to the remote resonators.

scholarly journals Single-photon nonreciprocal transport in one-dimensional coupled-resonator waveguides

2017 ◽  
Vol 95 (6) ◽  
Author(s):  
Xun-Wei Xu ◽  
Ai-Xi Chen ◽  
Yong Li ◽  
Yu-xi Liu
Keyword(s):  
Single Photon ◽  
One Dimensional ◽  
Coupled Resonator

scholarly journals NONLINEAR EFFECT ON THE TRANSMISSION OF LIGHT IN A CAVITY ARRAY

2011 ◽  
Vol 09 (02) ◽  
pp. 677-687
Author(s):  
H. D. LIU ◽  
W. WANG ◽  
X. X. YI
Keyword(s):  
Nonlinear Effect ◽  
Transmission Rate ◽  
Mean Field ◽  
Field Approximation ◽  
Mean Field Approximation ◽  
Level System ◽  
One Dimensional ◽  
Coherent Transport ◽  
The Mean ◽  
Cavity Array

Taking nonlinear effect into account, we study theoretically the transmission properties of photons in a one-dimensional coupled cavity, the cavity located at the center of the cavity array being coupled to a two-level system. By using the traditional scattering theory and the mean-field approximation, we calculate the transmission rate of photons along the cavities, and discuss the effect of nonlinearity and the cavity-atom coupling on the photon transport. The results show that the cavity-atom couplings affect the coherent transport of photons. The dynamics of such a system is also studied by numerical simulations, the effect of the atom-field detuning and nonlinearity on the dynamics is shown and discussed.

Scattering of a single photon in a one-dimensional coupled resonator waveguide with a Λ-type emitter assisted by an additional cavity

2018 ◽  
Vol 27 (5) ◽  
pp. 054206 ◽  
Author(s):  
Ming-Xia Li ◽  
Jie Yang ◽  
Gong-Wei Lin ◽  
Yue-Ping Niu ◽  
Shang-Qing Gong
Keyword(s):  
Single Photon ◽  
One Dimensional ◽  
Coupled Resonator

scholarly journals Controllable scattering of a single photon inside a one-dimensional coupled resonator waveguide with second-order nonlinearity

2020 ◽  
Vol 28 (2) ◽  
pp. 1249 ◽  
Author(s):  
Y. H. Zhou ◽  
X. Y. Zhang ◽  
Dan Dan Zou ◽  
Qi-Cheng Wu ◽  
Biao Ling Ye ◽  
...  
Keyword(s):  
Single Photon ◽  
Second Order ◽  
One Dimensional ◽  
Second Order Nonlinearity ◽  
Coupled Resonator

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

2016 ◽  
Vol 34 (1) ◽  
pp. 82
Author(s):  
Wen-An Li ◽  
Xiao-Shi Li ◽  
Jin-Jiang Huang ◽  
Cai-Mei Pan ◽  
Zhi-Feng Chen ◽  
...  
Keyword(s):  
Single Photon ◽  
Photon Transport ◽  
One Dimensional ◽  
Coupled Resonator
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