Integrated Hybrid Quantum Circuits · University of Calgary
Quantum circuits that amplify, convert and sense at the edge of what physics allows
We are an experimental and theoretical group at the University of Calgary. We design, fabricate and measure superconducting, magnonic and photonic circuits at millikelvin temperatures, and we develop the theory that tells us where their quantum limits lie.
mK
dilution-fridge measurements
NbN · NbTiN
kinetic-inductance films
YIG
magnon–photon hybrids
GHz ↔ telecom
microwave–optical links
Research
Six directions, one toolkit
Our work links superconducting microwave circuits to magnons, mechanics, spins and light. The same nonlinear and dissipative tools let us build quantum-limited amplifiers, directional devices, transducers and sensors.
Quantum-limited amplification
We develop kinetic-inductance parametric amplifiers in resonant, hybridized-mode and traveling-wave geometries. These devices add close to the minimum noise allowed by quantum mechanics and can emit path-entangled microwave radiation.
KIPA · 3WM TWPA · squeezing
Hybrid magnonics
We couple YIG magnons to superconducting resonators to form magnon polaritons. We amplify these hybrid excitations parametrically, and we study their nonreciprocal behaviour for magnetometry and on-chip signal routing.
YIG spheres · magnon polaritons · magnetometry
Microwave–optical transduction
Superconducting processors speak in microwaves, while long-distance networks run on light. We build opto-electro-magnonic and electro-optic interfaces that convert single quanta between the two, building on our early optomechanical proposals.
quantum networks · WGM resonators
Nonreciprocity and reservoir engineering
We make signals travel one way using nonlinearity and engineered dissipation in place of magnets. The same ideas let us charge quantum batteries more efficiently and protect bosonic qubits through directional error correction.
microwave diodes · quantum batteries · GKP
Quantum sensing and imaging
Entangled photons give depth resolution at light levels low enough to spare delicate biological samples. We built a prototype quantum optical microscope with NRC and pursue microwave quantum illumination, radar and phase sensing with photon pairs.
quantum OCT · quantum radar · biomedical
Spins, phonons and topological photonics
We explore silicon T-centres and quantum-dot spins as qubits with optical and phononic interfaces. In integrated photonics we use topological protection to make quantum light sources and links more robust.
T-centres · Floquet photonics
Supported by
Our research is funded by
