Photon Spot INC
142 W Olive Ave, Monrovia, CA 91016
Operating signal within 12 months from two or more independent sources.
What they make
Analytical Laboratory Instrument Manufacturing334516Photon Spot manufactures cryogenic systems and superconducting nanowire single-photon detectors (SNSPDs). The cryogenic systems deliver temperatures below 1 Kelvin without liquid helium consumption, while the detectors exhibit ultralow dark counts, sub-100ps jitter, and greater than 90% quantum efficiency near 1550nm. The company serves quantum technology applications including quantum computing, quantum communications, and scientific instrumentation, with products used by NASA, NIST, and other research organizations.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
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| Ultrasound Wondering INC | Monrovia | Irradiation Apparatus Manufacturing 334517 | UNVERIFIED | 0.5 KM |
| Ph Solutions | Monrovia | Analytical Laboratory Instrument Manufacturing 334516 | UNVERIFIED | 0.5 KM |
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Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | JUL 2026 |
| SAM GOV | OPERATING | MAY 2026 | MAY 2026 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | MAY 2026 |
| CAGE CODE | SAM GOV | MAY 2026 |
| CITY | SAM GOV | MAY 2026 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | MAY 2026 |
| REGISTRATION EXPIRATION | SAM GOV | MAY 2026 |
| STATE | SAM GOV | MAY 2026 |
| WEBSITE | SAM GOV | MAY 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.