Our lab designs, fabricates, tests, and integrates photonic devices and systems in silicon nitride. These devices leverage the low optical loss of silicon nitride to realize novel functionality such as ultra-high-Q waveguide resonators, narrow linewidth on-chip laser sources, and photonic molecules. We demonstrate these devices operating at the system scale in applications ranging from atomic-referenced metrology, to low power, ultra-high-capacity optical communications for tomorrow’s energy efficient hyperscale data centers.

Diversity, Equity, and Inclusion

We adhere to the basic principle that members of our community should treat each other with respect and decency at all times, and that we should not alienate, diminish, or insult each other, personally or professionally, either in word or deed. Based on this principle, we believe that well-being, respect, inclusion, collaboration, and mentorship are moral imperatives that are vital to our teaching and research mission. As individuals and as a community we constantly work to avoid all forms of discrimination, including explicit, implicit, and/or unintended bias.


New Group Name! Formerly known as OCPI, we have updated our group name to the OCAQπ Group

Open Positions We are looking for exceptional postdoctoral scholars, graduate students, and undergraduate students to join our team. Contact Professor Blumenthal at danb@ece.ucsb.edu with a brief description of interests and CV attached.

Recent News

July 10, 2024

We report the lowest losses to date for an anneal-free process at a maximum temperature 250 °C

June 21, 2024

"Chip-Scale Visible Sources Aim to Release Quantum Technology from the Lab"

April 4, 2024

We are pleased to announce that our group has updated our name to OCAQπ, Optical Communications and Atomic Quantum Photonic Integration.

March 29, 2024

Please join the U.S. National Science Foundation Directorate for Engineering on April 2, 2024, from 3 p.m. to 4 p.m. Eastern for a Distinguished Lecture by Dr. Daniel Blumenthal of the University of California, Santa Barbara, on “Visible Light to Mid-Infrared Photonics for Atomic and Quantum Applications.” 

March 6, 2024

We publish our demonstration of low-noise mmWave and microwave generation using integrated OFD

February 26, 2024

In this work we present a transformational advance in integrated trapped ion quantum information processor, sensing, and timing systems.

February 14, 2024

The first in-person meeting is held by the multi-university research group that will build quantum-based tools for space-based Earth sensing.

Funding sources
Funding sources
Academic and government collaborators
Academic and government collaborators
Industry Affiliates
Industry Affiliates