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QuantumProject (quantum engineering, how to make quantum computers that work)

Study of two particle systems

  • Von Neumann entropy and entaglemment
  • Simple two-level model to illustrate avoided crossing and entanglement
  • time evolution with electric fields/other mechanisms (raising/lowering of wells)
  • state tomography and relation to density matrix (experimental interpretation)
  • developing a specific analog-digital quantum simulator with two-qubits (operations on qubits)

Develop FCI code for ion traps and quantum dots

  • MHJ's code
  • Yoshida and Shimuzu https://arxiv.org/abs/2105.08256
  • Set up mtx elements (one-body and twobody) in uncoupled basis for 2d quantum (3d and 1d systems).
  • Øyvind's 3 and 4 particle code
  • Veronika's master thesis, FCI for quantum dots
  • Simen Kvaal's FCI code https://arxiv.org/abs/0810.2644
  • Effective interaction for many particles and FCI
  • Time development
  • Adiabatic(?) switching on/off of Coulumb interaction

Basis sets

  • DVR basis
  • Is the basis 'the same' after and under a perturbation?

Operations on qubits

  • Suggestions for circuits with given gates, how to make fields that perform different operations
  • Model hamiltonians and observables
  • Lowering and raising of wells and gates
  • Setting up electric fields/laser with time evolution/dipole approx

Von Neumann Entropy and Entanglement

  • 1d systems with two and more particle
  • 2d systems with two electrons in two wells
  • 3d system with two electrons in two wells
  • Move to three electrons (qd) and four electrons

From FCI to many-body methods with time dependence

  • Academic exercise: ground state evolution with time-dependence

Point defect theory and experiment