User guides
Step-by-step how-to guides for the features in Boulder Opal
How to monitor activity and retrieve results
Monitor job status and retrieve results from previously run calculations in Boulder Opal
How to mute status messages during calculations
Change the verbosity of the messaging
How to cite Boulder Opal
Cite relevant Boulder Opal articles and specific documentation pages
How to authenticate using an API key
Authenticate your Boulder Opal session without a browser
How to calculate and optimize with graphs
Create graphs for computations with Boulder Opal
How to represent quantum systems using graphs
Represent quantum systems for optimization, simulation, and other tasks using graphs
How to create analytical signals for simulation and optimization
Use predefined signals from Boulder Opal
How to define continuous analytical Hamiltonians
Use analytical expressions to construct your Hamiltonian
How to perform optimization and simulation in the same calculation
Perform calculations using optimization results in a single graph
How to reuse graph definitions in different calculations
Reapply graph nodes for multiple applications
How to optimize controls using gradient-free optimization
Perform graph-based optimizations when gradients are costly
How to optimize controls in arbitrary quantum systems using graphs
Highly-configurable non-linear optimization framework for quantum control
How to optimize controls with nonlinear dependences
Incorporate nonlinear Hamiltonian dependences on control signals
How to optimize controls on large sparse Hamiltonians
Efficiently perform control optimization on sparse Hamiltonians
How to create dephasing and amplitude robust single-qubit gates
Incorporate robustness into the design of optimal pulses
How to create leakage-robust single-qubit gates
Design pulses that minimize leakage to unwanted states
How to optimize error-robust Mølmer–Sørensen gates for trapped ions
Efficient state preparation using Mølmer–Sørensen-type interactions
How to optimize Mølmer–Sørensen gates for a multitone global beam
Creating efficient gates for trapped ions without individually addressing the ions
How to optimize controls robust to strong noise sources
Design controls that are robust against strong time-dependent noise sources with stochastic optimization
How to add smoothing and band-limits to optimized controls
Incorporate smoothing of optimized waveforms
How to optimize controls with time symmetrization
Incorporate time symmetry into optimized waveforms
How to find time-optimal controls
Optimizing over the duration of your controls
How to optimize controls using arbitrary basis functions
Create optimized controls from superpositions of basis functions
How to perform noise spectroscopy on arbitrary noise channels
Reconstructing noise spectra using shaped control pulses
How to perform parameter estimation with a small amount of data
Estimate Hamiltonian model parameters using measured data and the graph-based optimization engine
How to perform parameter estimation with a large amount of data
Estimate Hamiltonian model parameters using measured data and the graph-based stochastic optimization engine
How to characterize a transmission line using a qubit as a probe
Characterize transmission-line bandwidth via probe measurements and the graph-based optimization engine
How to simulate quantum dynamics for noiseless systems using graphs
Simulate the dynamics of closed quantum systems
How to simulate quantum dynamics subject to noise with graphs
Simulate the dynamics of closed quantum systems in the presence of Non-Markovian noise
How to simulate multi-qubit circuits in quantum computing
Evaluate the performance of multi-qubit circuits with and without noise
How to simulate open system dynamics
Calculating the dynamics of a quantum system described by a GKS–Lindblad master equation
How to simulate large open system dynamics
Calculate the dynamics of a high-dimensional quantum system described by a GKS–Lindblad master equation
How to calculate the steady state of an open quantum system
Compute the long time limit density matrix of Lindblad dynamics from a time-independent generator
How to calculate system dynamics for arbitrary Mølmer–Sørensen gates
Calculate the Mølmer–Sørensen gate evolution characteristics for trapped ions
How to format and export control solutions for hardware implementation
Prepare optimized controls for hardware implementation
How to import and use pulses from the Q-CTRL Open Controls library
Use pulses from an open-source library in Boulder Opal calculations
How to use QuTiP operators in graphs
Incorporate QuTiP objects and programming syntax directly into graphs