Conditional Spectroscopy via Non-Stationary Optical Homodyne Quantum State Tomography
| Autor: | Marc Aßmann, Carolin Lüders, Johannes Thewes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Quantum optics
Physics Quantum Physics Phase (waves) FOS: Physical sciences Quantum tomography 01 natural sciences 010305 fluids & plasmas Amplitude Temporal resolution 0103 physical sciences Statistical physics 010306 general physics Spectroscopy Quantum Physics (quant-ph) Ultrashort pulse Light field Optics (physics.optics) Physics - Optics |
| Popis: | Continuous variable quantum state tomography is one of the most powerful techniques to study the properties of light fields in quantum optics. However, the need for a fixed phase reference has so far prevented widespread usage in other fields such as semiconductor spectroscopy. Here, we introduce non-stationary quantum state tomography, which adapts the technique to the special requirements of ultrafast spectroscopy. In detail, we gain access to the amplitude and phase of light fields with a temporal resolution of about 100\,fs without the need for a fixed phase reference. Further, we show how our technique allows us to perform conditional studies of stochastic dynamics that are inaccessible experimentally by conventional means, and demonstrate the capabilities experimentally by monitoring the stochastic dynamics of a thermal light field on the sub-ps scale. Finally, we discuss differences and similarities to more standard Hanbury Brown-Twiss photon correlation experiments, which may be considered as the discrete variable analogues of our technique. 12 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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