Li, Y , Nankai Univ, Minist Educ, Key Lab Weak Light Nonlinear Photon, Dept Phys, Tianjin 300071, Peoples R China
部门归属:
Nankai Univ, Minist Educ, Key Lab Weak Light Nonlinear Photon, Dept Phys, Tianjin 300071, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
The quantum state transmission through the medium of high-dimensional many-particle system (boson or spinless fermion) is generally studied with a symmetry analysis. We discover that, if the spectrum of a Hamiltonian matches the symmetry of a fermion or boson system in a certain fashion, a perfect quantum state transfer can be implemented without any operation on the medium with pre-engineered nearest neighbor (NN). We also study a simple but realistic near half-filled tight-binding fermion system with uniform NN hopping integral. We show that an arbitrary many-particle state near the fermi surface can be perfectly transferred to its translational counterpart.
Li Ying,Song Zhi,Sun Chang-Pu. Perfect transfer of many-particle quantum state via high-dimensional systems with spectrum-matched symmetry[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2007,48(3):445-448.
