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Standards Development
This document addresses/provides definitions and terms in the field of quantum photonics. The scope includes terms related to the type, operation, and characterization of single-photon sources, single-photon detectors, optical quantum memories, quantum repeaters, photonic entanglement, and quantum frequency conversion. These terms will provide a framework for the development of recommended measurement practices for device characterization. Exclusions include optical quantum computing, photonic processors, and other quantum computing architectures.
The proposed work targets a foundational standard that provides a common language of terms to
support the development of commercial activity in the field of quantum photonics. That need is
highlighted in the U.S. Quantum Economic Development Consortium (QED-C) publication “Single-
photon measurement infrastructure for quantum applications (SPMIQA): Needs and priorities”
(2022) which specifically calls for the development of “common language of terms and a
compendium of best metrological practices.” In addition, this NP addresses this need by developing
a set of definitions that will provide the framework for recommended practices for device
characterization.
Clearly defined terms will be the foundation for the development of recommended measurement
practices (the focus of a subsequent NP). Furthermore, global industry will be able to more
accurately characterise device performance. That accuracy improves product quality control and
enables faster product-line improvement within a vendor and provides customers clear data for
device comparison. It also allows for faster integration of components into larger systems, spurring
the entire global market and ultimately promoting scaling of device production. This commoditization
of components will make new applications feasible, including medical applications where sensing
at the single-photon level allows lower signals to be detected leading to earlier disease detection.
Beyond the medical field, the easy access to measurements at the lowest levels can be expected
to open up new fields as well. These new fields will need additional workforce and that workforce
will need to be trained and clear definitions will facilitate that workforce training.
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