Entangled states of many particles are of interest in quantum information, quantum simulation and precision measurements. We generate an entangled state of 3,000 atoms via interaction with a cavity optical field, and heralded by the detection of a single photon. We measure the spin distributions of this many-atom spin system, and demonstrate a negative Wigner quasi-probability function. This technique can be extended to produce more complicated entangled states, and to realize atomic interferometers that surpass the standard quantum limit.

个人简介：

EDUCATION

2009 - 2015  Massachusetts Institute  of Technology, Cambridge, MA         Ph.D. in Physics

2005 - 2009  University  of Cambridge, Cambridge, UK                                 B.A. & M.Sci. in Physics

2004 - 2005  Fudan University,  Shanghai, China

RESEARCH POSITIONS

2015 - present    Massachusetts Institute of Technology, Cambridge, MA Department of Physics

Postdoctoral  associate with Prof. Martin Zwierlein

• Study strongly correlated fermions system at the single-atom level using quantum gas

microscope

2009 - 2015  Massachusetts Institute of Technology, Cambridge, MA

Department of Physics

Graduate research assistant with Prof. Vladan Vuletic

• Generating entangled spin states of 3000 atoms with negative Wigner function, using

interactions of atoms with optical cavity

• Demonstrating single-atom measurement resolution in atomic ensembles of up to 100 atoms

• Improving precision measurements at fundamental quantum mechanical limits via en- tangled state 

of many atoms

• Optomechanical cooling of collective motion of atomic ensembles in optical cavity

2008 - 2009     University of Cambridge, Cambridge, UK

Department of Physics, Cavendish Laboratory

Undergraduate  research assistant with Prof. David Khmelnitskii

• Thesis on theoretical study of sound radiation generated by moving charged particles

in piezoelectric materials

• Summer research on classification of magnetic symmetry groups in quasicrystals

2007        University of Cambridge, Cambridge, UK Engineering Department

Undergraduate  research assistant with Dr Matthew Juniper

• Design a contraction nozzle for a fuel injector to create a uniform shear flow and measure

the shear flow instability