uscqserver/hoqsttutorials.jl

Tutorials for Hamiltonian Open Quantum System Toolkit(HOQST)

hoqsttutorials.jl's Issues

02-lindblad_equation pdf building fails

This is related to JunoLab/Weave.jl#250. I will keep the format of the current 02-lindblad_equation and wait for the Weave issue to be resolved.

Change `S` to `lambshift` to avoid confusion

04-polaron_transformed_redfield.jmd bug

The unitary used in the Redfield equation is not correct.

Change name to HOSQATTutorial

Update Github page

New tutorials for `Custom eigendecomposition function`

The interfaces changed for v0.7.0. Need a new tutorial.

Add an example of multi-level systems

• A 3-level system example (closed-system version)
• A 3-level system example (AME version)

03-single_qubit_ame format

Section annealing format: "S" operator should be inline.

TRBDF2() solver not working anymore

It seems that this bug is related with some updates in OrdinaryDiffEq.jl. Will need to update HOQST

Add 3-qubit entanglement witness experiment tutorial

Tutorial for 3-qubit entanglement witness experiment in the paper.

To add example for time dependent coupling to a bath

It seems one cannot construct an annealing object with time-dependent coupling to a bach in the same way as constant coupling. The following code block for example gives an error. It will be useful to have an example that desmonstrates using TimeDependentCoupling.

Δ = 0.1
H = DenseHamiltonian([(s)->2*s-1, (s)->1.0], [σz, Δ * σx], unit=:ħ)
η = 0.001
fc = 4 * 2 * π
T = 20
bath = Ohmic(η, fc, T)
coupling = TimeDependentCoupling([(s)->s], [σz], unit=:ħ)
u0 = PauliVec[3][1]
annealing = Annealing(H, u0, coupling=coupling, bath=bath)

MethodError: Cannot `convert` an object of type TimeDependentCoupling to an object of type OpenQuantumBase.AbstractCouplings
Closest candidates are:
  convert(::Type{T}, ::T) where T at essentials.jl:171

Stacktrace:
 [1] Interaction(::TimeDependentCoupling, ::OhmicBath) at C:\Users\x35dai\.julia\packages\OpenQuantumBase\Pk0vX\src\coupling\interaction.jl:16
 [2] Annealing(::DenseHamiltonian{Complex{Float64}}, ::Array{Complex{Float64},1}; coupling::TimeDependentCoupling, bath::OhmicBath, interactions::Nothing, annealing_parameter::Function) at C:\Users\x35dai\.julia\packages\OpenQuantumBase\Pk0vX\src\annealing\annealing_type.jl:33
 [3] top-level scope at In[11]:8

Change solve_CGME to solve_cgme in CGME tutorial

API change in HOQST.