[species] add Yb174 quantum defects

Author: johannes-moegerle

src/rydstate/species/ytterbium.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from pathlib import Path
 from typing import ClassVar
 
@@ -60,3 +62,41 @@ class Ytterbium174(_YtterbiumAbstract):
         None,
         str(rydberg_constant.u),
     )
+
+    # -- [1] Peper 2024, http://arxiv.org/abs/2406.01482
+    #        Spectroscopy and modeling of 171Yb Rydberg states for high-fidelity two-qubit gates
+    #        see Table I
+    #        Isotope Yb174
+    # -- [2] Wilson 2019, https://arxiv.org/abs/1912.08754
+    #        Trapped arrays of alkaline earth Rydberg atoms in optical tweezers
+    #        fit only valid from 28s upward
+    #        see Table S2, but adjusted for non-Rydberg Ritz
+    #        Isotope Yb174
+    # -- [3] Kuroda 2025, https://arxiv.org/abs/2507.11487
+    #        Microwave spectroscopy and multi-channel quantum defect analysis of ytterbium Rydberg states
+    #        see Table S1 - S8
+    #        Isotope Yb174
+
+    _quantum_defects: ClassVar = {
+        # singlet
+        (0, 0.0, 0): (4 + 0.355101645, 0.277673956, 0.0, 0.0, 0.0),  # [3] S2
+        (1, 1.0, 0): (3 + 0.922709076, 2.60055203, 0.0, 0.0, 0.0),  # [3] S4
+        (2, 2.0, 0): (2 + 0.729513646, -0.0377841183, 0.0, 0.0, 0.0),  # [3] S6
+        (3, 3.0, 0): (0.276158949, -12.7258012, 0.0, 0.0, 0.0),  # [3] S7
+        # triplet
+        (0, 1.0, 1): (4 + 0.4382, 4, -1e4, 8e6, -3e9),  # [2] S2  # but adjusted for non-Rydberg Ritz
+        (1, 0.0, 1): (3 + 0.953661478, -0.287531374, 0.0, 0.0, 0.0),  # [3] S3
+        (1, 1.0, 1): (3 + 0.982084772, -5.45063476, 0.0, 0.0, 0.0),  # [3] S4
+        (1, 2.0, 1): (3 + 0.925150932, -2.69197178, 66.7159709, 0.0, 0.0),  # [3] S5
+        (2, 1.0, 1): (2 + 0.75258093, 0.3826, -483.1, 0.0, 0.0),  # [1] Table I
+        (2, 2.0, 1): (2 + 0.752292223, 0.104072325, 0.0, 0.0, 0.0),  # [3] S6
+        (2, 3.0, 1): (2 + 0.72902016, -0.705328923, 829.238844, 0.0, 0.0),  # [3] S1
+        (3, 2.0, 1): (0.0718252326, -1.00091963, -106.291066, 0.0, 0.0),  # [3] S1
+        (3, 3.0, 1): (0.0715123712, -0.768462937, 0.0, 0.0, 0.0),  # [3] S7
+        (3, 4.0, 1): (0.0839027969, -2.91009023, 0.0, 0.0, 0.0),  # [3] S1
+        (4, 3.0, 1): (0.0260964574, -0.14139526, 0.0, 0.0, 0.0),  # [3] S1
+        (4, 5.0, 1): (0.02529201, -0.11588052, 0.0, 0.0, 0.0),  # [3] S1  # actually from Yb171
+        #  +/- states
+        # (4, 4.0, "+"): (0.0262659964, 0.0254568575, 0.0, 0.0, 0.0),  # [3] S8
+        # (4, 4.0, "-"): (-0.148808463, -0.134219071, 0.0, 0.0, 0.0),  # [3] S8
+    }