Table 1 Summary of calculated defect properties in diamond, hBN, and TMDs

From: Spin-defect qubits in two-dimensional transition metal dichalcogenides operating at telecom wavelengths

Hosts

Eg (eV)

Defects

Point groups

Defect levels (eV)

EZPL (eV)

S

DW

D (GHz)

τR (μs)

Spin up

Spin down

ex

ey

a1

ex

ey

a1

Diamond

5.47

NCVC−1

C3v

1.87

1.87

0.69

4.64

4.64

1.62

2.10

2.93

0.05

2.86

0.014

hBN

5.62

CBVN

C2v

1.53

3.00

5.30

4.76

5.05

5.77

1.71

2.21

0.11

10.77

0.032

MoS2

2.37 (1.98)

MoS

C3v

0.40 (0.18)

0.40 (0.22)

1.80 (1.59)

2.34 (2.10)

2.34 (2.10)

2.35 (2.12)

1.11 (1.09)

0.74

0.48

20.51

37.7

  

WS

C3v

0.84 (0.48)

0.84 (0.71)

1.98 (1.89)

2.33 (2.04)

2.33 (2.06)

2.35 (2.09)

0.91 (0.94)

1.47

0.23

13.44

20.5

WS2

2.46 (1.85)

WS

C3v

0.81 (0.44)

0.81 (0.48)

2.04 (1.70)

2.44 (1.94)

2.44 (1.94)

2.46 (1.97)

1.03 (1.01)

1.01

0.36

14.44

14.1

  

MoS

C3v

0.38 (0.04)

0.38 (0.06)

1.92 (1.55)

2.44 (1.95)

2.44 (1.96)

2.44 (1.97)

1.22 (1.18)

0.45

0.64

21.65

54.2

MoSe2

2.07 (1.72)

MoSe

C3v

0.27 (0.04)

0.27 (0.06)

1.63 (1.42)

2.04 (1.79)

2.04 (1.79)

2.08 (1.81)

1.08 (1.08)

0.75

0.47

19.13

5.6

  

WSe

C3v

0.71 (0.29)

0.71 (0.52)

1.81 (1.57)

2.03 (1.75)

2.03 (1.78)

2.08 (1.80)

0.79 (0.74)

1.95

0.14

12.43

4.2

WSe2

2.15 (1.58)

WSe

C3v

0.69 (0.34)

0.69 (0.35)

1.84 (1.47)

2.10 (1.61)

2.10 (1.62)

2.16 (1.66)

0.88 (0.84)

1.63

0.20

12.88

3.2

  

MoSe

C3v

0.25 (−0.03)

0.25 (−0.02)

1.74 (1.35)

2.12 (1.63)

2.12 (1.65)

2.17 (1.66)

1.19 (1.08)

0.50

0.60

19.82

4.7

MoTe2

1.71 (1.39)

MoTe

C3v

0.19 (−0.09)

0.39 (0.01)

1.26 (0.85)

1.66 (1.06)

1.70 (1.23)

1.73 (1.30)

0.49 (0.36)

4.51

0.01

0.47

7.8

  

WTe

C3v

1.51 (1.24)

1.51 (1.27)

0.86 (0.60)

1.51 (1.24)

1.51 (1.27)

0.86 (0.60)

     
  1. Note: Bold numbers indicate occupied states.
  2. All the values in the table were theoretically estimated in this work, and the numbers between parentheses correspond to results with SOC. Defect levels are relative to the VBM. Majority (minority) spin is referred to as spin up (down). The ex, ey, and a1 columns indicate a1, b2, and \({b}_{2}^{ \&\#x00027;}\) for CBVN in hBN, respectively89. Note that the notations, ex, ey, and a1, are not valid anymore within SOC.