Open quantum systems & Quantum information

The theoretical physics team studies the dynamics and control of quantum systems (qubits, spins, atoms, molecules) in contact with an environment. We are interested in quantum information theory for its fundamental aspects as well as for its technological applications. The team develops original mathematical, numerical and modeling tools and methods specific to the problems studied (master equations, optimization, spectral analysis, algebraic and geometric methods of quantum calculation, etc.).

Our main study topics are:

  • Quantum thermodynamics & optical diagnostics (atomic thermal machines, thermometry, etc.)
  • Control of quantum systems (atoms/spins entangled with an environment, in a thermal bath, etc.) by adiabatic, optimal or reservoir engineering methods.
  • Quantum information theory: quantum correlations, entanglement and coherence
  • Dynamics of qubits, decoherence and purification or distillation protocols (algebraic, geometric and numerical approaches)

See also Quantum gravity .

Staff: Quentin Ansel, Bruno Bellomo, Nabile Boussaïd, Jana El Badawi, Pierre Joubert, José Lages, Vincent Pouthier, David Viennot

Recent publications:

  • Q. Ansel, E. Dionis, Floriane Arrouas, B. Peaudecerf, S. Guérin, David Guéry-Odelin et D. Sugny
    Introduction to Theoretical and Experimental aspects of Quantum Optimal Control
    J.Phys.B, 57, 133001, 2024
    Site de l'éditeur ADS HAL
  • Adonai Hilário da Silva, Reginaldo de Jesus Napolitano, Felipe Fernandes Fanchini et Bruno Bellomo
    Time-dependent Rabi frequencies to protect quantum operations on an atomic qutrit by continuous dynamical decoupling
    Phys. Rev. A, 109(3), 032611, 2024
    Site de l'éditeur HAL
  • Farzam Nosrati, Bruno Bellomo, Gabriele de Chiara, Giuseppe Compagno, Roberto Morandotti et Rosario Lo Franco
    Indistinguishability-assisted two-qubit entanglement distillation
    Quantum Science and Technology, 9, 2024
    Site de l'éditeur ADS HAL
  • Lucie Pepe, Vincent Pouthier et Saad Yalouz
    Optimized excitonic transport mediated by local energy defects: Survival of optimization laws in the presence of dephasing
    Phys. Rev. E, 109(1), 014303, 2024
    Site de l'éditeur ADS HAL