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Add time dependence to analytic doppler #32

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Merged
dihm merged 2 commits into from
Jul 31, 2025
Merged

Add time dependence to analytic doppler #32

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31719b0
Add time dependence to analytic doppler
camontag Jul 28, 2025
e658011
Update changelog.rst
camontag Jul 31, 2025
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2 changes: 2 additions & 0 deletions docs/source/changelog.rst
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Expand Up @@ -15,6 +15,8 @@ Bug Fixes
ARC v3.9.0 updated the precision of a constant used in its internal calculations
that shifts calculated dipole moment values by a small amount.
It is expected that other plots and values will differ by small amounts when using `Cell` and ARC v3.9.0
- Fixed bug where `solve_doppler_analytic` ignored parameter time-dependence.
It now follows the behavior of other steady-state solvers by constructing the Hamiltonian and equations of motion at `t=0`.

Deprecations
++++++++++++
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5 changes: 4 additions & 1 deletion src/rydiqule/doppler_exact.py
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Expand Up @@ -150,6 +150,9 @@ def solve_doppler_analytic(sensor: Sensor, doppler_mesh_method: Optional[MeshMet
this solver effectively reduces the dimension to 1 or 2, respectively,
leading to faster solves.

If the sensor contains couplings with `time_dependence`, this solver will add those
couplings at their :math:`t=0` value to the steady-state hamiltonian to solve.

If insufficient system memory is available to solve the system in a single call,
system is broken into "slices" of manageable memory footprint which are solved individually.
This slicing behavior does not affect the result.
Expand Down Expand Up @@ -224,7 +227,7 @@ def solve_doppler_analytic(sensor: Sensor, doppler_mesh_method: Optional[MeshMet
n = sensor.basis_size

# 1. Get base Liouvillian (L0) and Doppler shifts
L0, dummy_const = generate_eom(sensor.get_hamiltonian(), sensor.decoherence_matrix(),
L0, dummy_const = generate_eom(sensor.get_time_hamiltonian(t=0), sensor.decoherence_matrix(),
remove_ground_state=False, real_eom=True)
all_shifts = sensor.get_doppler_shifts()

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