Quantum optics theory at HUJI 

 

Quantum properties like entanglement and superposition produce striking physical phenomena and hold great promise for future technologies. Unfortunately, observing such properties is fundamentally challenging. One the one hand, to manipulate a quantum system, one needs to couple it to a controlling system but, on the other hand, this coupling inevitably introduces noise, which can mask its quantum properties.

In our group, we develop tools to understand and control noise in open quantum systems. We use mathematical concepts like symmetry, degeneracy, and topology to discover robust protocols for coherent control, that are resilient to certain types of noise. We explore situations where noise can be used to our advantage, especially near special degeneracies called exceptional points.

 

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