braket.analog_hamiltonian_simulator.rydberg.rydberg_simulator_helpers module

braket.analog_hamiltonian_simulator.rydberg.rydberg_simulator_helpers.validate_config(config: str, atoms_coordinates: ndarray, blockade_radius: float) → bool

Valid if a given configuration complies with the Rydberg approximation

Parameters:

• config (str) – The configuration to be validated

• atoms_coordinates (ndarray) – The coordinates for atoms in the filled sites

• blockade_radius (float) – The Rydberg blockade radius

Returns:

bool – True if the configuration complies with the Rydberg approximation, False otherwise

braket.analog_hamiltonian_simulator.rydberg.rydberg_simulator_helpers.get_blockade_configurations(lattice: AtomArrangement, blockade_radius: float) → list[str]

Return the lattice configurations complying with the blockade approximation

Parameters:

• lattice (AtomArrangement) – A lattice with Rydberg atoms and their coordinates

• blockade_radius (float) – The Rydberg blockade radius

Returns:

list[str] – A list of bit strings, each of them corresponding to a valid configuration complying with the blockade approximation. The length of each configuration is the same as the number of atoms in the lattice, with ‘r’ and ‘g’ indicating the Rydberg and ground states, respectively.

Notes on the indexing: The left-most bit in the configuration corresponds to the first atom in the lattice.

Notes on the algorithm: We start from all possible configurations and get rid of those violating the blockade approximation constraint.

braket.analog_hamiltonian_simulator.rydberg.rydberg_simulator_helpers.sample_state(state: ndarray, shots: int) → ndarray

Sample measurement outcomes from the quantum state state

Parameters:

• state (ndarray) – A state vector

• shots (int) – The number of samples

Returns:

ndarray – The array for the sample results