Effect of magnetic field on a multi window ladder type electromagnetically induced transparency with 87Rb atoms in vapour cell |
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Authors: | Sumit Bhushan Vikas Singh Chauhan Dixith M Raghavan K Easwaran |
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Institution: | Indian Institute of Technology Patna, Bihta, Patna-801103, India |
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Abstract: | In this work, we experimentally study the effect of externally applied magnetic field on a ladder type EIT in a vapour cell consisting of 87Rb atoms. The introduction of magnetic field causes the Zeeman splitting of the hyperfine levels of 87Rb atoms and hence the number of available windows of transparency increases. We report the observation of nine such windows. Such multi window EIT systems are capable of storing pulses at the different frequencies, corresponding to these windows hence paving the way for realization of multi frequency quantum memories. Also, the total bandwidth of storage is 218.4 MHz which is two orders of magnitude higher than that typically obtained in single window EIT based storage systems. These systems have tremendous applications in the field of speedy transmission of data over a long distance quantum communication channel. |
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Keywords: | Corresponding author Electromagnetically induced transparency Broadband quantum memory Quantum communication |
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