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Abstract Multi-photon entangled graph states are a fundamental resource in quantum communication networks, distributed quantum computing, and sensing. These states can in principle be created deterministically from quantum emitters such as optically active quantum dots or defects, atomic systems, or superconducting qubits. However, finding efficient schemes to produce such states has been a long-standing challenge. Here, we present an algorithm that, given a desired multi-photon graph state, determines the minimum number of quantum emitters and precise operation sequences that can produce it. The algorithm itself and the resulting operation sequence both scale polynomially in the size of the photonic graph state, allowing one to obtain efficient schemes to generate graph states containing hundreds or thousands of photons.
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Caught in a trap: how to capture a quantum dot
Many new quantum technologies will rely on the precise manipulation of single photons; however, most light sources produce photons randomly. Quantum dots, which can reliably produce single photons, may provide a solution. From Virginia Commonwealth University and Vanderbilt University in the US, Dr Nathaniel Kinsey and Dr Justus Ndukaife are developing a device that can trap quantum dots and enhance their photon emission rates, paving the way for new quantum technologies.
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- Award ID(s):
- 2322891
- PAR ID:
- 10621519
- Publisher / Repository:
- Futurum
- Date Published:
- Journal Name:
- Futurum
- ISSN:
- 2632-8399
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript
- Journal Article:
- https://doi.org/10.33424/FUTURUM597
