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Microcombs – chip-scale devices that generate and measure frequencies of light with exquisite accuracy – have transformed timekeeping and boosted optical
Frequency combs — specialized lasers that act like rulers to measure light — are now being brought down to a low-power, chip-scale form. NIST researchers David
Semiconductor technologies are critical to U.S. economic and national security as they are essential to modern life in communications, healthcare, energy, etc. and also underpin many emerging technologies like quantum, artificial intelligence, high power electronics and advanced wireless (6G+). The
A "single emitter" is a structure that exhibits a transition from a high energy state to a low energy state, thereby generating a photon, or light emission. A variety of solid-state single emitters have been discovered or manufactured. One example is a quantum dot, a nanometer-scale structure that
The Integrated Photonics Project utilizes heterogeneous materials integration to demonstrate novel optoelectronic devices such as semiconductor lasers, wavelength converters, and polarization rotators with compact form. We use materials including silicon, silicon dioxide, tantalum pentoxide, and
Our research on quantum frequency conversion follows two main tracks. First, we combine relatively mature frequency conversion technology based on periodically-poled lithium niobate waveguides with quantum light generated by single semiconductor quantum dots in proof-of-principle experiments that
Giora Peniakov, A Beck, Eilon Poem, Zu-En Su, Boaz Taitler, Sven Hofling, Garnett Bryant, David Gershoni
We present magneto-optical studies of a self-assembled semiconductor quantum dot in neutral and positively charged states. The diamagnetic shifts and Zeeman
Grant Brodnik, Haixin Liu, David Carlson, Jennifer Black, Scott Papp
Many uses of lasers place the highest importance on access to specific wavelength bands. For example, mobilizing optical-atomic clocks for a leap in sensing
Vijin Kizhake Veetil, Junyeob Song, Pradeep Namboodiri, Nikki Ebadollahi, Ashish Chanana, Aaron Katzenmeyer, Christian Pederson, Joshua Pomeroy, Jeff Chiles, Jeff Shainline, Kartik Srinivasan, Marcelo Davanco, Matthew Pelton
Color centers in silicon have recently gained considerable attention as a single-photon source [1,2] and as a spin qubit-photon interface [3] for quantum