Abstract
Quantum technology promises to deliver quantum computers, unbreakable communication and ultra-sensitive sensors. Quantum photonics is one of the prominent platforms of quantum technology which utilizes photons - often called flying qubits. Entanglement generated from a photon-pair source is a crucial resource for many quantum photonic implementations, for example, an entanglement-based global quantum network and metrology beyond classical limits. Here, we will discuss our recent results of chip-scale photon-pair sources in silicon photonics. These results are focused on improving brightness, spectral purity and indistinguishability of the photon-pair sources, for example, by engineering photonic structures and temporal pulse shaping. We have found that both methods have trade-offs among brightness, spectral purity and indistinguishability. Additionally, we have observed that generating a high-fidelity quantum state using a quantum photonic circuit requires sufficient isolation between the nonlinear photon-pair sources and the linear photonic circuit. It is crucial to remove the nonlinear effect of the strong pump both before and after the sources to limit the spurious photon-pair generation which contaminates the target quantum state.
Original language | English |
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Title of host publication | Quantum Sensing and Nano Electronics and Photonics XIX |
Editors | Manijeh Razeghi, Giti A. Khodaparast, Miriam S. Vitiello |
Publisher | SPIE - The International Society for Optical Engineering |
ISBN (Electronic) | 9781510659650 |
DOIs | |
Publication status | Published - 2023 |
Event | Quantum Sensing and Nano Electronics and Photonics XIX 2023 - San Francisco, United States Duration: 29 Jan 2023 → 2 Feb 2023 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 12430 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Quantum Sensing and Nano Electronics and Photonics XIX 2023 |
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Country/Territory | United States |
City | San Francisco |
Period | 29/01/23 → 2/02/23 |
Bibliographical note
Publisher Copyright:© 2023 SPIE.
Research Groups and Themes
- QETLabs
Keywords
- heralded single-photon source
- micro-resonator
- nonlinear optics
- photon-pairs source
- Quantum photonics
- silicon photonics
- spontaneous four wave mixing