IQUIST Young Researchers Seminar: Santiago Vargas-Daniels, Anderson Group

Event Type

Seminar/Symposium

Sponsor

IQUIST

Location

190 Engineering Sciences Building, 1101 W Springfield Ave, Urbana, IL 61801

Date

Nov 12, 2025   11:00 - 11:50 am  

Speaker

Santiago Vargas-Daniels, Anderson Group

Contact

Chris Anderson

E-Mail

cpand@illinois.edu

Views

72

Originating Calendar

IQUIST Young Researchers Seminar

Silicon Carbide Photonics for Quantum Networking 

Abstract: Harnessing the full power of quantum technologies will require reliable transmission of quantum information. One method of accomplishing this task leverages existing classical network structures by encoding quantum states onto photons. However, the “no-cloning” theorem of quantum mechanics forbids the perfect duplication of an arbitrary quantum state without destroying it; thereby inhibiting the use of signal amplification to overcome inevitably lossy channels. To solve this, many forms of quantum “repeaters” have been proposed which utilize entanglement swapping to exchange information between quantum nodes. I will discuss the preliminary design and testing of an integrated quantum repeater platform utilizing defects in silicon carbide (SiC). Specifically, the neutral divacancy (VV0) displays the desired atom-like spin and optical structure, where world-record coherence times have been measured. I will highlight our efforts to realize photonic devices that enable enhanced photon collection efficiency, and electrical tunability of single photon emission, in CMOS compatible SiC on insulator. I will also discuss the characterization and control of VV0 ensembles and single defects in bulk SiC. 

Bio: Santiago is a 3^rd year physics PhD student in the Anderson lab working on quantum networking hardware.