## Quantum optics theory at HUJI

Quantum particles like atoms and photons possess fragile properties that lead to intriguing phenomena and applications. A key question that must be answered before one can measure and utilize such properties is* how to maintain delicate quantum properties in the presence of noise?* This is a fundamental challenge since on the one hand, interaction with the environment is necessary to control and measure a quantum system while, on the other hand, the environment inevitably introduces noise that destroys quantum coherence. In our group, we use mathematical concepts like symmetry, degeneracy, and topology to discover robust quantum protocols – whose outcomes are independent of certain types of noise.

## Research Interests:

- Adiabatic and non-adiabatic protocols for quantum computation and measurement
- Exceptional points - singular points in the density of states open quantum systems
- Non-Hermitian quantum mechanics – a theoretical framework that produces efficient computation tools to study open quantum systems
- Quantum computation with photons and atoms