pyEPR.calcs.convert module¶
Created on Tue Mar 19 18:14:08 2019
Unit and variable conversions.
@author: Zlatko Minev
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class
pyEPR.calcs.convert.
Convert
[source]¶ Bases:
object
Static container class for conversions of units and variables.
TEST CONVERSION:
from pyEPR.toolbox.conversions import Convert Lj_nH, Cs_fF = 11, 60 Convert.transmon_print_all_params(Lj_nH, Cs_fF);
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static
Cs_from_Ec
(Ec, units_in='MHz', units_out='fF')[source]¶ Charging energy \(4E_c n^2\), where \(n=Q/2e\)
Returns in SI units, in Farads.
\(E_{C}=\frac{e^{2}}{2C}J\)
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static
Ec_from_Cs
(Cs, units_in='fF', units_out='MHz')[source]¶ Charging energy \(4E_c n^2\), where \(n=Q/2e\) Returns in MHz
\(E_{C}=\frac{e^{2}}{2C}J\)
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static
Ej_from_Lj
(Lj, units_in='nH', units_out='MHz')[source]¶ Josephson Junction energy from Josephson inductance. Returns in MHz
\(E_j = \phi_0^2 / L_J\)
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static
Ic_from_Lj
(Lj, units_in='nH', units_out='nA')[source]¶ Josephson Junction crit. curr from Josephson inductance.
\(E_j = \phi_0^2 / L_J = \phi_0 I_C\)
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static
Lj_from_Ej
(Ej, units_in='MHz', units_out='nH')[source]¶ Josephson Junction ind from Josephson energy in MHZ. Returns in units of nano Henries by default
\(E_j = \phi_0^2 / L_J\)
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static
Lj_from_Ic
(Lj, units_in='nA', units_out='nH')[source]¶ Josephson Junction crit. curr from Josephson inductance.
\(E_j = \phi_0^2 / L_J = \phi_0 I_C\)
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static
ZPF_from_EPR
(hfss_freqs, hfss_epr_, hfss_signs, hfss_Ljs, Lj_units_in='H', to_df=False)[source]¶ Parameters: - be either Pandas or numpy arrays. (Can) –
- hfss_freqs – HFSS Freqs. (standard units: GHz, but these will cancel with Ejs) (list/Series)
- hfss_epr – EPR ratio matrix, dim = M x J (2D array/DataFrame)
- hfss_signs – Sign matrix, dim = M x J (2D array/DataFrame)
- hfss_Ljs – Assumed in Henries (see Lj_units_in). (list/Series)
- Lj_units_in – Default ‘H’ for Henries. Can change here.
Returns: M x J matrix of reduced ZPF; i.e., scaled by reduced flux quantum. type: np.array and a tuple of matrices.
- Example use:
- ϕzpf, (Ωm, Ej, Pmj, Smj) = Convert.ZPF_from_EPR(hfss_freqs, hfss_epr, hfss_signs, hfss_Ljs, to_df=True)
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static
ZPF_from_LC
(L, C)[source]¶ Input units assumed to be identical
Returns Phi ZPF in and Q_ZPF in NOT reduced units, but SI
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static