43 citations · 299 across the 14 of their papers we have counts for
14 papers
20 Second Parity Lifetime in an InAs--Pb Tetron Device
Morteza Aghaee, Zulfi Alam, Mariusz Andrzejczuk +162
A central promise of topological quantum computing is that increasing the excitation gap improves device performance significantly. Here, we experimentally validate this principle…
Distinct Lifetimes for and Loop Measurements in a Majorana Tetron Device
Morteza Aghaee, Zulfi Alam, Rikke Andersen +164
We present a hardware realization and measurements of a tetron qubit device in a superconductor-semiconductor heterostructure. The device architecture contains two parallel superco…
Roadmap to fault tolerant quantum computation using topological qubit arrays
David Aasen, Morteza Aghaee, Zulfi Alam +179
We describe a concrete device roadmap towards a fault-tolerant quantum computing architecture based on noise-resilient, topologically protected Majorana-based qubits. Our roadmap e…
Optomechanical ring resonator for efficient microwave-optical frequency conversion
I-Tung Chen, Bingzhao Li, Seokhyeong Lee +3
Phonons traveling in solid-state devices are emerging as a universal excitation that can couple to different physical systems through mechanical interaction. At microwave frequenci…
Silicon-lattice-matched boron-doped gallium phosphide: A scalable acousto-optic platform
Nicholas S. Yama, I-Tung Chen, Srivatsa Chakravarthi +9
The compact size, scalability, and strongly confined fields in integrated photonic devices enable new functionalities in photonic networking and information processing, both classi…
Tunable phononic coupling in excitonic quantum emitters
Adina Ripin, Ruoming Peng, Xiaowei Zhang +6
Engineering the coupling between fundamental quantum excitations is at the heart of quantum science and technologies. A significant case is the creation of quantum light sources in…
Hybrid Integration of GaP Photonic Crystal Cavities with Silicon-Vacancy Centers in Diamond by Stamp-Transfer
Srivatsa Chakravarthi, Nicholas S. Yama, Alex Abulnaga +6
Optically addressable solid-state defects are emerging as one of the most promising qubit platforms for quantum networks. Maximizing photon-defect interaction by nanophotonic cavit…
Triply-Resonant Sum Frequency Conversion with Gallium Phosphide Ring Resonators
Alan D. Logan, Shivangi Shree, Srivatsa Chakravarthi +5
We demonstrate quasi-phase matched, triply-resonant sum frequency conversion in 10.6-um-diameter integrated gallium phosphide ring resonators. A small-signal, waveguide-to-waveguid…
Target-wavelength-trimmed second harmonic generation with gallium phosphide-on-nitride ring resonators
Lillian Thiel, Alan D. Logan, Srivatsa Chakravarthi +4
We demonstrate post-fabrication target-wavelength trimming with a gallium phosphide on silicon nitride integrated photonic platform using controlled electron-beam exposure of hydro…
Impact of surface and laser-induced noise on the spectral stability of implanted nitrogen-vacancy centers in diamond
Srivatsa Chakravarthi, Christian Pederson, Zeeshawn Kazi +2
Scalable realizations of quantum network technologies utilizing the nitrogen vacancy center in diamond require creation of optically coherent NV centers in close proximity to a sur…
Inverse-designed photon extractors for optically addressable defect qubits
Srivatsa Chakravarthi, Pengning Chao, Christian Pederson +6
Solid-state defect qubit systems with spin-photon interfaces show great promise for quantum information and metrology applications. Photon collection efficiency, however, presents…
A window into NV center kinetics via repeated annealing and spatial tracking of thousands of individual NV centers
Srivatsa Chakravarthi, Chris Moore, April Opsvig +6
Knowledge of the nitrogen-vacancy center formation kinetics in diamond is critical to engineering sensors and quantum information devices based on this defect. Here we utilize the…
Frequency control of single quantum emitters in integrated photonic circuits
Emma R. Schmidgall, Srivatsa Chakravarthi, Michael Gould +4
Generating entangled graph states of qubits requires high entanglement rates, with efficient detection of multiple indistinguishable photons from separate qubits. Integrating defec…
A Large-Scale GaP-on-Diamond Integrated Photonics Platform for NV Center-Based Quantum Information
Michael Gould, Srivatsa Chakravarthi, Ian R. Christen +6
We present chip-scale transmission measurements for three key components of a GaP-on-diamond integrated photonics platform: waveguide-coupled disk resonators, directional couplers,…