Title :
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.
Abstract :
Single ions and crystals of ions are confined in a linear Paul trap and are investigated for quantum information processing. Superpositions of the S1/2 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 S1/2 - P1/2 transition is monitored for a state measurement by the "electron shelving" technique. The S1/2 - D5/2 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; S1/2 - P1/2 transition; S1/2 ground state; crystal ions; electron shelving; excited quadrupole transition; fluorescence light; linear Paul trap; long lived D5/2 state; optically cooled ions; quantum entanglement; quantum gates; quantum information processing; qubits; single ions; state measurement; vibrational ground state;
Conference_Titel :
Quantum Electronics Conference, 2004. (IQEC). International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-778-4
