3 papers
quant-ph2023
Nonlinear time-reversal interferometry with arbitrary quadratic collective-spin interaction
Zhiyao Hu, Qixian Li, Xuanchen Zhang +3
Atomic nonlinear interferometry has wide applications in quantum metrology and quantum information science. Here we propose a nonlinear time-reversal interferometry scheme with hig…
quant-ph2023
Spin Squeezing with Arbitrary Quadratic Collective-Spin Interaction
Zhiyao Hu, Qixian Li, Xuanchen Zhang +3
Spin squeezing is vitally important in quantum metrology and quantum information science. The noise reduction resulting from spin squeezing can surpass the standard quantum limit a…
quant-ph2023
Heisenberg-limited spin squeezing in coupled spin systems
Long-Gang Huang, Xuanchen Zhang, Yanzhen Wang +3
Spin squeezing plays a crucial role in quantum metrology and quantum information science. Its generation is the prerequisite for further applications but still faces an enormous ch…