Quantum gates and entanglement

Author

Schmidt-Kaler, F. ; Haffiier, H. ; Riebe, M. ; Deuschle, T. ; Benhelm, J. ; Lancaster, G. ; Becher, C. ; Hansel, W. ; Roos, C. ; Blatt, R.

Author_Institution

Inst. fur Exp., Innsbruck Univ.

fYear

2004

fDate

21-21 May 2004

Firstpage

65

Lastpage

65

Abstract

Single ions and crystals of ions are confined in a linear Paul trap and are investigated for quantum information processing. Superpositions of the S_1/2 ground state and the long lived D _5/2 state are used to implement a qubit. The ions are optically cooled and fluorescence light at 397 nm on the S_1/2 - P_1/2 transition is monitored for a state measurement by the "electron shelving" technique. The S_1/2 - D_5/2 quadrupole transition at 729 nm is excited for cooling the crystals to the vibrational ground state and for the manipulation of individual qubits

Keywords

excited states; fluorescence; ground states; laser cooling; particle traps; quantum entanglement; quantum gates; trapped ions; vibrational states; 397 nm; 729 nm; S_1/2 - P_1/2 transition; S_1/2 ground state; crystal ions; electron shelving; excited quadrupole transition; fluorescence light; linear Paul trap; long lived D_5/2 state; optically cooled ions; quantum entanglement; quantum gates; quantum information processing; qubits; single ions; state measurement; vibrational ground state;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2004. (IQEC). International

Conference_Location

San Francisco, CA

Print_ISBN

1-55752-778-4

Type

conf

Filename

1366644