Abstract
Nowadays, the quantum switch is playing a key device in optical quantum networks. In this paper, we investigate the transport of a single photon in one-dimensional coupled-resonator waveguides with two quantum emitters, which the first quantum emitter fixed at x = 0 and the other can be placed at any position. The numerical results show that the transport properties of the single-photon are particularly sensitive to the position of the second quantum emitter. The coupling strength of gn can broaden the width of the transmission spectra, the larger the coupling strength gn is, the wider transmission spectra is. Not only that, single-photon in the controllable channel can be perfectly reflected or transmitted by the quantum emitter. We also found that if both two quantum emitters are embedded at x = 0, the dipole-dipole interactions of two quantum emitters can change the dip positions in the spectra.
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This work are supported by National Natural Science Foundation of China under Grant Nos. 11674253, 11674089, 11725524 and 61471356.
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Yan, GA., Lu, H. & Wang, Yp. A Single-Photon Switch with Two Quantum Emitters in One-Dimensional Coupled-Resonator Waveguides. Int J Theor Phys 59, 632–640 (2020). https://doi.org/10.1007/s10773-019-04356-5
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DOI: https://doi.org/10.1007/s10773-019-04356-5