1. Qubit-induced high-order nonlinear interaction of the polar molecules
in a stripline cavity
Gang Chen (陈刚)
Shanxi University (Taiyuan, Shanxi province)
Shaoxing university (Shaoxing, Zhejiang province)

2. Outline 1. Acknowledgements
2. The rotational states of the polar molecules
3. Quantum optics for the polar molecules
with the rotational states
4. Collective spin-qubit model
5. Qubit-induced high-order nonlinear interaction
of the polar molecules

3. Acknowledgements 3. 973 program and NNSFC
Professors Suotang Jia and Liantuan Xiao in Shanxi University
2. Doctors Yonggang Yang, Jie Ma and Yanting Zhao in Shanxi University
program and NNSFC

4. The rotation states of the polar molecules

5. The rotation states of the polar molecules
Quantum information for the polar molecules
with the rotation states.

6. The rotation states of the polar molecules
(~GHz)

7. The rotation states of the polar molecules.

8. The rotation states of the polar molecules
Three novel properties of the polar molecules
with the rotational states are given as following:
The large electric dipole moment
(2) The long-live internal rotation states
The natural lifetime:
(3) The long-range dipole-dipole interaction

9. Quantum optics for the polar molecule(s)

10. Quantum optics for the polar molecule(s)

11. Two polar molecules ???? Quantum optics for the polar molecule(s)
A polar molecule interacting with a microwave cavity
is governed by the JC model
Two polar molecules ????

12. Quantum optics for the polar molecule(s)
An ensemble of the polar molecules interacting with
a microwave cavity is governed by the Dicke model
Typical properties:
(a) Collective coupling
(b) Quantum phase transition

13. Collective spin-qubit model

14. Collective spin-qubit model
Virtual photon

15. Collective spin-qubit model
New quantum dynamics induced by a qubit ?

16. High-order nonlinear interaction
In the rotating frame,
becomes

17. High-order nonlinear interaction

18. High-order nonlinear interaction
In the interaction picture with respect to

19. High-order nonlinear interaction

20. High-order nonlinear interaction

21. Thank you for your attention