Distinguishability and 'which pathway' information in multidimensional interferometric spectroscopy with a single entangled photon-pair
| Autor: | Shaul Mukamel, Shahaf Asban |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Quantum Physics Multidisciplinary Photon SciAdv r-articles FOS: Physical sciences Physics::Optics Optics Pathway information Interferometry Quantum mechanics ComputingMethodologies_DOCUMENTANDTEXTPROCESSING Physical and Materials Sciences Quantum Physics (quant-ph) Focus (optics) Spectroscopy Quantum ComputingMilieux_MISCELLANEOUS Research Article |
| Zdroj: | Science advances, vol 7, iss 39 Science Advances |
| ISSN: | 2375-2548 |
| DOI: | 10.1126/sciadv.abj4566 |
| Popis: | Description Resolving light-matter interaction histories via interferometry of quantum sources. Correlated photons inspire abundance of metrology-related platforms, which benefit from quantum (anti-) correlations and outperform their classical counterparts. While these mainly focus on entanglement, the role of photon exchange phase and degree of distinguishability has not been widely used in quantum applications. Using an interferometric setup, we theoretically show that, when a two-photon wave function is coupled to matter, it is encoded with “which pathway?” information even at low-degree of entanglement. An interferometric protocol, which enables phase-sensitive discrimination between microscopic interaction histories (pathways), is developed. We find that quantum light interferometry facilitates utterly different set of time delay variables, which are unbound by uncertainty to the inverse bandwidth of the wave packet. We illustrate our findings on an exciton model system and demonstrate how to probe intraband dephasing in the time domain without temporally resolved detection. The unusual scaling of multiphoton coincidence signals with the applied pump intensity is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|