caa a22 4500 445370858 CHVBK 20180317142946.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00340-011-4603-3 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4603-3 Measurement of the coherence time of the ground-state Zeeman states in 40Ca+ [Elektronische Daten] [S. Haze, T. Ohno, K. Toyoda, S. Urabe] The transition between the two Zeeman sublevels of 2S1/2 in a single trapped 40Ca+ ion is directly excited by a radio-frequency magnetic field. A coherence time of 29.4±2.5 ms is measured by Ramsey interferometry. The ratio of the maximum Rabi frequency of the Zeeman transition (∼250 kHz) to the inverse of the coherence time is 7.3×103, which is considered to be a figure of merit for Zeeman states when they are used as a quantum bit. Several applications of the Zeeman qubit to quantum information processing are also discussed. Springer-Verlag, 2011 Haze S. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut Ohno T. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut Toyoda K. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut Urabe S. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut Applied Physics B Springer-Verlag 105/4(2011-12-01), 761-765 0946-2171 105:4<761 2011 105 340 https://doi.org/10.1007/s00340-011-4603-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4603-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Haze S. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Ohno T. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Toyoda K. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut NATIONALLICENCE 700 1- Urabe S. Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 105/4(2011-12-01), 761-765 0946-2171 105:4<761 2011 105 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer