5.3k citations · 36.1k across the 195 of their papers we have counts for
9 papers · 1 filter
Non-Hermitian bulk-boundary correspondence via scattering theory
Haoshu Li, Qian Niu
The conventional bulk-boundary correspondence breaks down in non-Hermitian systems. In this paper, we reestablish the bulk-boundary correspondence in one-dimensional non-Hermitian…
Equivalence of O(3) nonlinear sigma model and the CP1 model: A path integral approach
Ran Cheng, Qian Niu
A rigorous proof is given on the equivalence of the O(3) nonlinear sigma model and the CP1 model via path integral approach.
Calculation of Atomic Number States: a Bethe Ansatz Approach
Shou-Pu Wan, Mark G. Raizen, Qian Niu
We analyze the conditions for producing atomic number states in a one-dimensional optical box using the Bethe ansatz method. This approach provides a general framework, enabling th…
Ultra-high fidelity qubits for quantum computing
Mark G. Raizen, Shou-Pu Wan, Chuanwei Zhang +1
We analyze a system of fermionic Li atoms in an optical trap, and show that an atom "on demand" can be prepared with ultra-high fidelity, exceeding 0.99998. This process can…
Quantum Many-Body Culling
A. M. Dudarev, M. G. Raizen, Qian Niu
We propose a method to produce a definite number of ground-state atoms by adiabatic reduction of the depth of a potential well that confines a degenerate Bose gas with repulsive in…
Adiabatic Geometric Phase for a General Quantum States
Biao Wu, Jie Liu, Qian Niu
A geometric phase is found for a general quantum state that undergoes adiabatic evolution. For the case of eigenstates, it reduces to the original Berry's phase. Such a phase is ap…