Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter
The Doppler effect of moving atoms can create irreversibility of light. We show that the laser field in an electromagnetic induced transparency (EIT) scheme with atomic motion can control the directional propagation of two counter-propagating output probe fields in an atomic gas. Quantum coherence a...
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my.um.eprints.79432019-10-09T07:05:23Z http://eprints.um.edu.my/7943/ Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter Ooi, Chong Heng Raymond QC Physics The Doppler effect of moving atoms can create irreversibility of light. We show that the laser field in an electromagnetic induced transparency (EIT) scheme with atomic motion can control the directional propagation of two counter-propagating output probe fields in an atomic gas. Quantum coherence and the Doppler effect enable the system to function like an optical transistor with two outputs that can generate states analogous to the Bell basis. Interference of the two output fields from the gas provides useful features for determining the mean atomic velocity and can be used as a sensitive quantum velocimeter. Some subtle physics of EIT is also discussed. In particular, the sign of the dispersive phase in EIT is found to have a unique property, which helps to explain certain features in the interference. IOP Publishing 2008 Article PeerReviewed Ooi, Chong Heng Raymond (2008) Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter. New Journal of Physics, 10. p. 123024. ISSN 1367-2630 http://iopscience.iop.org/1367-2630/10/12/123024/pdf/1367-2630_10_12_123024.pdf doi:10.1088/1367-2630/10/12/123024 |
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QC Physics Ooi, Chong Heng Raymond Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
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The Doppler effect of moving atoms can create irreversibility of light. We show that the laser field in an electromagnetic induced transparency (EIT) scheme with atomic motion can control the directional propagation of two counter-propagating output probe fields in an atomic gas. Quantum coherence and the Doppler effect enable the system to function like an optical transistor with two outputs that can generate states analogous to the Bell basis. Interference of the two output fields from the gas provides useful features for determining the mean atomic velocity and can be used as a sensitive quantum velocimeter. Some subtle physics of EIT is also discussed. In particular, the sign of the dispersive phase in EIT is found to have a unique property, which helps to explain certain features in the interference. |
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Ooi, Chong Heng Raymond |
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Ooi, Chong Heng Raymond |
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Ooi, Chong Heng Raymond |
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Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
title_short |
Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
title_full |
Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
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Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
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Controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
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controlling irreversibility and directionality of light via atomic motion: optical transistor and quantum velocimeter |
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IOP Publishing |
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2008 |
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http://eprints.um.edu.my/7943/ http://iopscience.iop.org/1367-2630/10/12/123024/pdf/1367-2630_10_12_123024.pdf |
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