Lab

Efforts are put into extending quantum enhanced sensing into the non-Hermitian regime of quantum world! A pseudo-Hermitian single-qubit sensor without involving the exceptional point is designed, demonstrating potential advantages to overcome noises that cannot be averaged out by repetitive measurements.

Quantum tomography constitutes the family of quantum technologies. A new principle for efficiently inferring the full state of a quantum system by randomly shaking a single local qubit of a network is established, providing the quantum science and engineering communities a much-needed solution for measuring complex systems with limited access.

A two-level quantum probe under pulsed control allows to reconstruct quantum state of dark systems that are inaccessible for direct control and measurements.

Periodic driving is crucial for both coherent quantum control and fundamental concepts in quantum dynamics. A Raman transition between Floquet synthetic levels in a weakly driven solid-state spin system is successfully observed, offering new possibilities to the communities of efficient quantum control and quantum simulation.

Quantum sensing pursues both unprecedented sensitivity and excellent spatial resolution. An new platform for all-electric nanoscale quantum sensing based on a carbon nanotube double quantum dot is designed, achieving sensitivities of single-molecule magnetic resonance spectroscopy and opening a route towards integrated on-chip quantum-sensing devices.