Take Your Losses Below the Quantum Limit
Emerging Technologies
Quantum optics operates in low-light conditions, making it highly sensitive to optical loss. Even minimal loss can significantly impact system performance. From sensing to single-photon detection or generation, Castor Optics offers a range of fiber optics products to help you minimize losses at every level.
Probing NV Centers Through a Fiber-based Design
Probing NV centers requires determined probe conditions and a large collection efficiency detector. Castor Optics WMCs and DCFCs are ideally suited for this task. Their asymmetric multimode splitting ratio allows for high-power excitation of the NV center and concurrent collection of the return signal with a large-area optical fiber. Castor’s couplers take away the trade-off between sacrificing excitation for collection efficacy and vice-versa; their unique design ensures that the bulk of the excitation signal reaches its target and, more critically, that the collected return signal is almost completely coupled at the output port.
Modal Manipulation for Single-photon Operation
Whether for superconducting nanowire single-photon detectors (SNSPD) or single-photon-generating microstructures, even slight optical losses can critically undermine performance, potentially rendering the entire system inoperable. Castor Optics offers a range of mode-converting solutions. The photonic lantern enables theoretically lossless conversion of a few-mode signal to single-mode outputs and vice versa, which can then be interfaced with small active areas. Castor has also developed fiber processing expertise that can be leveraged to design and manufacture tailored single-fiber mode converters or mode-field adaptors.
And More in the Works
Drop us a line to inquire about your custom solution. Passive homodyne detection in a single low-loss fiber coupler? Stay tuned for these exciting advances coming soon.
Supporting a Range of Modalities
Castor products have been specifically designed to optimize performance across various operational wavelengths and detection modalities. See our collection of Case studies and Application notes, and drop us a line to learn more!
Related products
Double-Clad Fiber Couplers (DCFC)
Wideband Multimode Circulators (WMC)
