Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots
Single-photon sources with photon antibunching characteristics are essential for quantum information technologies. This paper investigates the potential of quaternary-alloy CdTeSeS colloidal core quantum dots (cQDs) as compact, room-temperature, and fiber-integrated single-photon sources. Single-pho...
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MDPI AG
2025-01-01
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| author | Surasak Chiangga |
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| description | Single-photon sources with photon antibunching characteristics are essential for quantum information technologies. This paper investigates the potential of quaternary-alloy CdTeSeS colloidal core quantum dots (cQDs) as compact, room-temperature, and fiber-integrated single-photon sources. Single-photon emission from CdTeSeS cQDs was verified by measuring the second-order correlation function, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>g</mi><mrow><mfenced><mn>2</mn></mfenced></mrow></msup><mfenced><mi>τ</mi></mfenced></mrow></semantics></math></inline-formula>, using a Hanbury-Brown and Twiss setup. A novel method to determine zero-time delay through afterpulsing analysis is presented. The results demonstrate strong photon antibunching with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>g</mi><mrow><mfenced><mn>2</mn></mfenced></mrow></msup><mfenced><mn>0</mn></mfenced><mo>=</mo><mn>0.13</mn></mrow></semantics></math></inline-formula>, confirming that the photoemission from the CdTeSeS cQDs function as a single-photon source. This work highlights the potential of CdTeSeS cQDs as reliable and efficient single-photon sources for practical use in fiber-based quantum information technologies. |
| format | Article |
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| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-a402756f63d24435b7f503c7b03ad7682025-01-24T13:46:20ZengMDPI AGPhotonics2304-67322025-01-011215210.3390/photonics12010052Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum DotsSurasak Chiangga0Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, ThailandSingle-photon sources with photon antibunching characteristics are essential for quantum information technologies. This paper investigates the potential of quaternary-alloy CdTeSeS colloidal core quantum dots (cQDs) as compact, room-temperature, and fiber-integrated single-photon sources. Single-photon emission from CdTeSeS cQDs was verified by measuring the second-order correlation function, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>g</mi><mrow><mfenced><mn>2</mn></mfenced></mrow></msup><mfenced><mi>τ</mi></mfenced></mrow></semantics></math></inline-formula>, using a Hanbury-Brown and Twiss setup. A novel method to determine zero-time delay through afterpulsing analysis is presented. The results demonstrate strong photon antibunching with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>g</mi><mrow><mfenced><mn>2</mn></mfenced></mrow></msup><mfenced><mn>0</mn></mfenced><mo>=</mo><mn>0.13</mn></mrow></semantics></math></inline-formula>, confirming that the photoemission from the CdTeSeS cQDs function as a single-photon source. This work highlights the potential of CdTeSeS cQDs as reliable and efficient single-photon sources for practical use in fiber-based quantum information technologies.https://www.mdpi.com/2304-6732/12/1/52single-photon sourcequantum dotsoptical fiberscorrelation functionHanbury–Brown and Twiss |
| spellingShingle | Surasak Chiangga Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots Photonics single-photon source quantum dots optical fibers correlation function Hanbury–Brown and Twiss |
| title | Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots |
| title_full | Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots |
| title_fullStr | Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots |
| title_full_unstemmed | Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots |
| title_short | Room-Temperature Fiber-Coupled Single-Photon Source from CdTeSeS Core Quantum Dots |
| title_sort | room temperature fiber coupled single photon source from cdteses core quantum dots |
| topic | single-photon source quantum dots optical fibers correlation function Hanbury–Brown and Twiss |
| url | https://www.mdpi.com/2304-6732/12/1/52 |
| work_keys_str_mv | AT surasakchiangga roomtemperaturefibercoupledsinglephotonsourcefromcdtesescorequantumdots |