Voltage-controlled storage and retrieval of an infrared-light pulse in a quantum-dot molecule |
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Authors: | Jiahua Li Rong Yu Xiaoxue Yang |
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Institution: | a Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China b School of Science, Wuhan Institute of Technology, Wuhan 430073, People’s Republic of China |
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Abstract: | Dynamic storage and retrieval of a weak infrared (IR)-light pulse are investigated theoretically with feasible parameters in an asymmetric double quantum dot system, a quantum dot molecule (QDM). It is shown that, with a voltage-controlled tunneling, we are able to store and retrieve the IR signal pulse in this three-subband QDM medium by slowly switching off and on the tunneling. The scheme proposed may open up the electrical controllability of quantum optical information storage and retrieval, which is expected to be useful in quantum information science in an asymmetric double quantum dot controlled by voltage. |
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Keywords: | 78 67 Hc 42 50 Gy 73 21 La |
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