c3.libraries.hamiltonians¶
Library of Hamiltonian functions.
Module Contents¶
- c3.libraries.hamiltonians.hamiltonian_reg_deco(func)[source]¶
Decorator for making registry of functions
- c3.libraries.hamiltonians.resonator(a)[source]¶
Harmonic oscillator hamiltonian given the annihilation operator.
- Parameters
a (Tensor) – Annihilator.
- Returns
Number operator.
- Return type
Tensor
- c3.libraries.hamiltonians.duffing(a)[source]¶
Anharmonic part of the duffing oscillator.
- Parameters
a (Tensor) – Annihilator.
- Returns
Number operator.
- Return type
Tensor
- c3.libraries.hamiltonians.third_order(a)[source]¶
- Parameters
a (Tensor) – Annihilator.
- Returns
Tensor – Number operator.
return literally the Hamiltonian a_dag a a + a_dag a_dag a for the use in any Hamiltonian that uses more than
just a resonator or Duffing part. A more general type of quantum element on a physical chip can have this type of interaction.
One example is a three wave mixing element used in signal amplification called a Superconducting non-linear asymmetric inductive eLement
(SNAIL in short). The code is a simple modification of the Duffing function and written in the same style.
- c3.libraries.hamiltonians.int_XX(anhs)[source]¶
Dipole type coupling.
- Parameters
anhs (Tensor list) – Annihilators.
- Returns
coupling
- Return type
Tensor
- c3.libraries.hamiltonians.int_YY(anhs)[source]¶
Dipole type coupling.
- Parameters
anhs (Tensor list) – Annihilators.
- Returns
coupling
- Return type
Tensor
- c3.libraries.hamiltonians.x_drive(a)[source]¶
Semiclassical drive.
- Parameters
a (Tensor) – Annihilator.
- Returns
Number operator.
- Return type
Tensor