About the project
This project studies nonreciprocal entanglement between frequency-distinct superconducting qubits, enabled by spatiotemporal superconducting metasurfaces.
Entanglement is the linchpin of quantum mechanics and a pivotal enabler of quantum technologies, wherein the states of particles are intrinsically correlated, such that the state of one instantaneously influences the other, regardless of the distance between them. Reciprocal entanglement and coupling between qubits often lead to unwanted bidirectional interactions and reflections, which degrade quantum states and reduce quantum coherence.
This project studies nonreciprocal entanglement between frequency-distinct superconducting qubits, enabled by spatiotemporal superconducting metasurfaces. The system features a reflective quantum state-converting metasurface designed for millikelvin-temperature quantum technologies, utilizing cascaded spacetime-modulated Josephson field-effect transistors (JoFETs).
This spatiotemporal metasurface transcends the limitations of traditional linear space-time metasurfaces by incorporating Josephson junctions, offering highly efficient state-frequency conversion at millikelvin temperatures with conversion gain, along with a novel platform for quantum wave engineering. This work demonstrates that spatiotemporal superconducting metasurfaces enable highly efficient quantum state conversion even for superconducting qubits with a high frequency distinction ratio.
You will join the Smart Electronic Materials and Systems research group and become part of a project that emphasizes strong industrial collaborations and commercialization potential.
