Absorption spectrum of a two-level system in a squeezed vacuum |
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| Institution: | 1. Departamento de Física, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico;2. Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México, Mexico;1. Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 790-784, Republic of Korea;2. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610051, China;3. Department of Physics, Indian Institute of Technology Dharwad, Dharwad 580011, Karnataka, India;4. ICFO – Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss 3, 08860 Castelldefels (Barcelona), Spain;5. Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warszawa, Poland;1. Physics Department, University of Massachusetts, Boston, 02125, USA;2. Department of Physics and Astronomy, and Center for Quantum Information Science and Technology, University of Southern California, Los Angeles, CA 90089-0484, USA;3. Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany;4. Munich Center for Quantum Science and Technology, Schellingstraße 4, 80799 München, Germany;1. Department of Chemistry, Technische Universität München, Garching, 85737, Germany;2. Munich Centre for Quantum Science and Technology (MCQST), München, 80799, Germany;3. Department of Mathematics, University of Würzburg, Würzburg, 97074, Germany |
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| Abstract: | The weak probe-field absorption spectrum of a two level atom driven by a coherent pump field in a squeezed vacuum is calculated. When the squeezed light and coherent driving field are tuned to atomic resonance, the absorption spectrum of the probe field can show a linewidth smaller than the linewidth in normal vacuum. |
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