Welcome!
We are a lab of scientists and inventors at UC Berkeley working on building hybrid quantum systems with light-matter interfaces to advance quantum technology and probe fundamental science.
Some of our results from previous research at Harvard and UChicago.
Entanglement of nanophotonic quantum memory nodes in a telecom network.
We distributed entanglement between two separate nodes of a quantum network at a rate of up to 1.4 Hz with over 80% fidelity. We demonstrated over 1 second of coherence time for entanglement between Si29 nuclear spins and successfully distributed entanglement over 35 km of deployed telecom fiber in the Boston area. Nature
Robust multi-qubit quantum network node with integrated error detection.
Our platform is based on Silicon Vacancy (SiV) defects in diamond nanophotonic cavities. Each cavity contains a single SiV with two qubits: electron spin, used as a communication qubit, and nuclear spin, used as a memory qubit. We demonstrate spin-photon entanglement with both electron and nuclear spins, as well as higher temperature operation for SiVs under high-strain conditions. Science
Quantum-enabled millimeter wave to optical transduction using neutral atoms.
Here, we present a new hybrid quantum platform for interfacing single optical and mm-wave photons using Rydberg atoms as mediators. Using our system we demonstrate quanutm-limited transduction between optical and mm-wave photons with internal efficiency of 58% and with less than 1 photon of added noise. Nature
A tunable high-Q millimeter wave cavity for hybrid circuit and cavity QED experiments.
We demonstrated a high-Q 3D seamless superconducting cavity compatible with hybrid quantum experiments that require optical access, such as Rydberg atoms, trapped molecules, and hybrid superconducting circuits APL