| Title: | Electrically and geometrically tunable photon pair entanglement from ferroelectric nematic liquid crystal |
|---|
| Authors: | ID Klopčič, Sara, Institut "Jožef Stefan" (Author)
ID Kavčič, Aljaž, Institut "Jožef Stefan" (Author)
ID Sebastián Ugarteche, Nerea, Institut "Jožef Stefan" (Author)
ID Humar, Matjaž, Institut "Jožef Stefan" (Author) |
|---|
| Files: |  URL - Source URL, visit https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/advs.202515206
 PDF - Presentation file, download (1,80 MB)
MD5: 94FE669424F9E914A5B78507AC8C2794
|
|---|
| Language: | English |
|---|
| Typology: | 1.01 - Original Scientific Article |
|---|
| Organization: |  IJS - Jožef Stefan Institute
|
|---|
| Abstract: | Entangled photons are a cornerstone of quantum technologies, enabling applications from secure communication to quantum computing. A longstanding challenge is to develop a compact source that would generate polarization-entangled photons with tunable quantum state on demand. The promising materials for such sources are ferroelectric nematic liquid crystals (FNLCs), due to their nonlinear optical properties and easily controllable configuration. In this work, it is demonstrated that the polarization state and the degree of entanglement of photon pairs generated within FNLCs can be changed in a controllable and reversible manner. First, tuning of the entanglement is demonstrated via sample geometry with twisted FNLC configurations in a sample of varying thickness. Secondly, by applying an electric field, the degree of entanglement can be tuned in real time. In both scenarios, the degree of entanglement can be adjusted from nearly entirely separate photons to fully entangled. These findings represent a significant step toward tunable quantum sources that can produce any desired polarization state on demand. In the future, by adding more electrodes, different parts of the sample could be controlled individually, allowing for the creation of pixelated quantum light sources. |
|---|
| Keywords: | photon entanglement, ferroelectric nematic liquid crystal, tunability |
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Submitted for review: | 08.08.2025 |
|---|
| Article acceptance date: | 07.10.2025 |
|---|
| Publication date: | 24.10.2025 |
|---|
| Publisher: | Wiley-VCH GmbH |
|---|
| Year of publishing: | 2025 |
|---|
| Number of pages: | str. 1-10 |
|---|
| Numbering: | Vol. , iss. |
|---|
| Source: | Nemčija |
|---|
| PID: | 20.500.12556/DiRROS-25308  |
|---|
| UDC: | 53 |
|---|
| ISSN on article: | 2198-3844 |
|---|
| DOI: | 10.1002/advs.202515206 |
|---|
| COBISS.SI-ID: | 264859907 |
|---|
| Copyright: | © 2025 The Author(s). |
|---|
| Note: | Nasl. z nasl. zaslona;
Soavtorji: Aljaž Kavčič, Nerea Sebastián, Matjaž Humar;
Opis vira z dne 15. 1. 2026;
|
|---|
| Publication date in DiRROS: | 15.01.2026 |
|---|
| Views: | 164 |
|---|
| Downloads: | 102 |
|---|
| Metadata: |    |
|---|
|
:
|
Copy citation |
|---|
| | | | Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
