model

chalmers_qubit.devices.sarimner.model

Classes:

Name	Description
`SarimnerModel`	Initializes a new quantum system simulation configuration for the Sarimner model.

SarimnerModel

SarimnerModel(
    transmon_dict: dict,
    coupling_dict: Optional[dict] = None,
    dim: int = 3,
)

Bases: Model

Initializes a new quantum system simulation configuration for the Sarimner model.

This class sets up the essential parameters and structure needed for simulating a quantum system with specified transmon qubit characteristics and couplings. It initializes the internal state required for managing the system's dynamics, including drift and controls.

Parameters:

Name	Type	Description	Default
`transmon_dict`	`dict`	A dictionary containing the parameters for each transmon qubit. The keys are qubit identifiers, and the values are dictionaries with qubit properties (e.g., frequency, anharmonicity).	required
`coupling_dict`	`Optional[dict]`	A dictionary specifying the couplings between qubits. If None, no couplings are considered.	`None`
`dim`	`int`	The dimension of the Hilbert space for each qubit (default is 3 for qutrit).	`3`

Attributes:

Name	Type	Description
`num_qubits`	`int`	The number of qubits in the system.
`dims`	`list of int`	A list specifying the dimension of each qubit's Hilbert space.
`params`	`dict`	A dictionary containing all system parameters, including transmon properties and couplings.
`_drift`	`list`	Internal representation of the system's drift Hamiltonian.
`_controls`	`dict`	Internal setup for system control Hamiltonians.
`_noise`	`list`	An empty list initialized for potential future addition of noise models.

Methods:

Name	Description
`_parse_dict`	Internal method to parse and validate input dictionaries.
`_set_up_drift`	Internal method to set up the drift Hamiltonian.
`_set_up_controls`	Internal method to set up the control Hamiltonians.

Notes

The transmon_dict should contain parameters for each qubit, such as frequency and anharmonicity.
The coupling_dict, if provided, should specify the coupling strengths between qubit pairs.
The model uses a fixed dimension (dim) for all qubits, defaulting to qutrit (3-level) systems.

get_all_drift

get_all_drift() -> List[Tuple[Qobj, List[int]]]

Get all the drift Hamiltonians.

Returns:

Name	Type	Description
`drift_hamiltonian_list`	`list`	A list of drift Hamiltonians in the form of `[(qobj, targets), ...]`.

get_control

get_control(label: Hashable) -> Tuple[Qobj, List[int]]

Get the control Hamiltonian corresponding to the label.

Parameters:

Name	Type	Description	Default
`label`	`hashable object`	A label that identifies the Hamiltonian.	required

Returns:

Name	Type	Description
`control_hamiltonian`	`tuple`	The control Hamiltonian in the form of `(qobj, targets)`.

get_control_labels

get_control_labels() -> List[Hashable]

Get a list of all available control Hamiltonians. Optional, required only when plotting the pulses or using the optimal control algorithm.

Returns:

Name	Type	Description
`label_list`	`list of hashable objects`	A list of hashable objects each corresponds to an available control Hamiltonian.

get_control_latex

get_control_latex()

Get the labels for each Hamiltonian. It is used in the method :meth:.Processor.plot_pulses. It is a 2-d nested list, in the plot, a different color will be used for each sublist.

get_noise

get_noise() -> List[Noise]

Get a list of :obj:.Noise objects. Single qubit relaxation (T1, T2) are not included here. Optional method.

Returns:

Name	Type	Description
`noise_list`	`list`	A list of :obj:`.Noise`.