| Autor: |
Lior Cohen, Elisha S. Matekole, Yehuda Pilnyak, Daniel Istrati, Jonathan P. Dowling, Hagai S. Eisenberg |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
AVS Quantum Science. 5 |
| ISSN: |
2639-0213 |
| DOI: |
10.1116/5.0147694 |
| Popis: |
The Schmidt number quantifies the number of modes and is mainly used as a measure for the quality of entanglement. We theoretically compute the photon distribution of type-I spontaneous parametric down conversion (SPDC) with an arbitrary Schmidt number. The photon distribution is used for a novel method to measure the Schmidt number. This method requires only two on–off single-photon detectors with no photon number or temporal resolution. The method works in the strong pumping regime where high photon numbers are non-negligible. We experimentally demonstrate the method for type-II SPDC. The easy and fast measurement of the Schmidt number has a broad range of applications from the calibration of strong pump SPDC and entanglement sources to multi-photon quantum interference and Gaussian boson sampling. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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