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Entangling Thousands of Atoms

Event Details

Event Dates: 

Monday, April 20, 2015 - 1:00pm

Seminar Location: 

  • JILA X590

Speaker Name(s): 

Hao Zhang

Speaker Affiliation(s): 

Massachusetts Institute of Technology
Seminar Type/Subject

Scientific Seminar Type: 

  • JILA Public Seminar

Event Details & Abstract: 

Entangled states of many particles are of interest in quantum metrology, quantum information and quantum computing. We have recently generated entangled states of 3,000 atoms, by interacting atoms with very weak light, and detecting one photon emerging with a certain polarization. The entangled state produced displays non-Gaussian spin wavefunctions, and we reconstruct a negative Wigner quasi-probability distribution, manifestly demonstrating the quantum feature of the state. This technique can be extended to produce more complicated entangled states, and to build atomic clocks that overcome the standard quantum limit.