Qubit-induced high-order nonlinear interaction of the polar molecules in a stripline cavity

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.013601· OSTI ID:21442950

Gang, Chen ^[1]; Hao, Zhang; Yonggang, Yang; Liantuan, Xiao; Suotang, Jia ^[1]; Rui, Wang ^[2]

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1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006 (China)
2. Department of Physics, Zhejiang Ocean University, ZhouShan 316000 (China)

By the exchange of virtual microwave photon induced by a stripline cavity, we present a collective spin-qubit model for the indirect interaction between a superconducting charge-phase qubit and an ensemble of the polar molecules. More importantly, the high-order nonlinear interaction among the polar molecules is generated successfully by using the SU(2) commutation relations of the qubit. Numerical simulation shows that this high-order nonlinear interaction can lead to a strong macroscopic quantum coherent effect, even if the parameters including the molecular number are small. For a large molecular number, the Kerr nonlinear interaction is also obtained. Moreover, it is found that this Kerr nonlinear parameter depends linearly on the molecular number, and as a result, has a giant value, which is 2 to 3 orders of magnitude larger than that in the other proposal schemes of the solid-state systems. Our results present a way to investigate the quantum nonlinear dynamics of the polar molecules.

• OSTI ID: 21442950
• Journal Information: Physical Review. A, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevA.82.013601; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
COMMUTATION RELATIONS
COMPUTERIZED SIMULATION
MICROWAVE RADIATION
MOLECULES
NONLINEAR PROBLEMS
PHOTONS
QUBITS
SOLIDS
SPIN
SUPERCONDUCTIVITY
ANGULAR MOMENTUM
BOSONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
INFORMATION
MASSLESS PARTICLES
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUANTUM INFORMATION
RADIATIONS
SIMULATION