Hardware Capabilities

During program development, it can be quite handy to know what true hardware capabilities are and incorporate that information programmatically. Bloqade offers the ability to do this via get_capabilities().

Programmatic Access

get_capabilities() (importable directly from bloqade) returns a QuEraCapabilities object. This object contains all the hardware constraints in Decimal format for the Aquila machine, our publicly-accessible QPU on AWS Braket.

An example of using get_capabilities() is presented below:

from bloqade import get_capabilities, piecewise_linear

# get capabilities for Aquila
aquila_capabilities = get_capabilities()

# obtain maximum Rabi frequency as Decimal
max_rabi = aquila_capabilities.capabilities.rydberg.global_.rabi_frequency_max

# use that value in constructing a neat Rabi waveform
rabi_wf = piecewise_linear(durations = [0.5, 1.0, 0.5], values = [0, max_rabi, max_rabi, 0])

The attribute names for each value have been provided below but will require you to provide the proper prefix like in the example above (e.g. the maximum number of qubits lives under the number_qubits_max attribute which can be navigated to via *your_QuEra_Capabilities_Object*.lattice.number_qubits_max).

Aquila Capabilities

Task

• Use prefix your_capabilities_object.capabilities.task for:
  • minimum number of shots
  • maximum number of shots

Capability	Attribute	Value
Minimum Number of Shots	number_shots_min	1
Maximum Number of Shots	number_shots_max	1000

Lattice Geometry

• Use prefix your_capabilities_object.capabilities.lattice for:
  • maximum number of qubits
• Use prefix your_capabilities_object.capabilities.lattice.area for:
  • maximum lattice area width
  • maximum lattice area height
• Use prefix your_capabilities_object.capabilities.lattice.geometry for:
  • maximum number of sites
  • position resolution
  • minimum radial spacing
  • minimum vertical spacing

Capability	Attribute	Value
Maximum Number of Qubits	number_qubits_max	256
Maximum Lattice Area Width	width	75.0 µm
Maximum Lattice Area Height	height	76.0 µm
Minimum Radial Spacing between Qubits	spacing_radial_min	4.0 µm
Minimum Vertical Spacing between Qubits	spacing_vertical_min	4.0 µm
Position Resolution	position_resolution	0.1 µm
Maximum Number of Sites	number_sites_max	256

Global Rydberg Values

• Use prefix your_capabilities_object.capabilities.rydberg for:
  • C6 Coefficient
• Use prefix your_capabilities_object.capabilities.rydberg.global_ for:
  • Everything else related to global (applied to all atom) capabilities

Capability	Attribute	Value
Rydberg Interaction Constant	c6_coefficient	5.42×10⁶ rad/μs × µm⁶
Minimum Rabi Frequency	rabi_frequency_min	0.00 rad/μs
Maximum Rabi Frequency	rabi_frequency_max	15.8 rad/μs
Rabi Frequency Resolution	rabi_frequency_resolution	0.0004 rad/μs
Maximum Rabi Frequency Slew Rate	rabi_frequency_slew_rate_max	250.0 rad/µs²
Minimum Detuning	detuning_min	-125.0 rad/μs
Maximum Detuning	detuning_max	125.0 rad/μs
Detuning Resolution	detuning_resolution	2.0×10⁻⁷ rad/μs
Maximum Detuning Slew Rate	detuning_slew_rate_max	2500.0 rad/µs²
Minimum Phase	phase_min	-99.0 rad
Maximum Phase	phase_max	99.0 rad
Phase Resolution	phase_resolution	5.0×10⁻⁷ rad
Minimum Time	time_min	0.0 µs
Maximum Time	time_max	4.0 µs
Time Resolution	time_resolution	0.001 µs
Minimum Δt	time_delta_min	0.05 µs

Local Detuning Values

• Use prefix your_capabilities_object.capabilities.rydberg.local for the following values:

Capability	Attribute	Value
Maximum Detuning	detuning_max	125.0 rad/μs
Minimum Detuning	detuning_min	0 rad/μs
Maximum Detuning Slew Rate	detuning_slew_rate_max	1256.0 rad/µs²
Maximum Number of Local Detuning Sites	number_local_detuning_sites	200
Maximum Site Coefficient	site_coefficient_max	1.0
Minimum Site Coefficient	site_ceofficient_min	0.0
Minimum Radial Spacing	spacing_radial_min	5 µm
Minimum Δt	time_delta_min	0.05 μs
Time Resolution	time_resolution	0.001 µs