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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

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Published on: August 17, 2017

Trapped-ion state detection through coherent motion.

D B Hume1, C W Chou, D R Leibrandt

  • 1Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. dhume@kip.uni-heidelberg.de

Physical Review Letters
|January 17, 2012
PubMed
Summary
This summary is machine-generated.

We developed a new method for detecting the state of trapped ions using a coupled spectroscopy and control ion system. This technique simplifies distinguishing atomic states and enables non-destructive measurement of ion properties.

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Area of Science:

  • Atomic Physics
  • Quantum Information Science
  • Spectroscopy

Background:

  • Accurate state detection is crucial for trapped ion quantum technologies.
  • Existing methods for trapped ion state detection can be complex or destructive.
  • A general and efficient state detection method is needed for diverse atomic and molecular species.

Purpose of the Study:

  • To demonstrate a general method for state detection of trapped ions.
  • To apply this method to a wide range of atomic and molecular species.
  • To simplify the process of distinguishing atomic clock states and non-destructively measure ion properties.

Main Methods:

  • Coupling a spectroscopy ion (27Al+) to a control ion (25Mg+) in the same trap.
  • Performing state detection via off-resonant laser excitation of the spectroscopy ion, inducing coherent motion.
  • Measuring motional amplitude using time-resolved photon counting or resolved sideband excitations on the control ion.

Main Results:

  • A simplified method for distinguishing clock states in 27Al+ was achieved, avoiding ground-state cooling and sideband transitions.
  • Non-destructive distinction of Zeeman sublevels in the (1S0) ground state of 27Al+ was demonstrated.
  • The method reduces spontaneous emission and optical pumping on the spectroscopy ion.

Conclusions:

  • The demonstrated method offers a general approach for state detection in trapped ions.
  • This technique is applicable to a broad class of atomic and molecular species.
  • The developed method provides simplified and non-destructive state detection capabilities for trapped ions.