Erratum: Prospects for atomic clocks based on large ion crystals [Phys. Rev. A 92, 032108 (2015)]

Atomic properties ofLu+

“…Calculation of polarizabilities given in section IV A indicate that the differential scalar polarizability, ∆α, for the 1 S 0 to 3 D 1 may not be as reported in [16] and this would have immediate consequences for the proposal given in [15]. It is therefore essential to obtain an experimental value for this quantity.…”

“…However, based on the analysis here, these events are infrequent, happening only once every 10 4 clock cycles. In a multi-ion clock [15] these considerations would only result in a very small number fluctuations such that additional repump lasers would not be necessary.…”

“…Finally, initial estimates of the differential scalar polarisability indicate that it is sufficiently small to allow practical room * phybmd@nus.edu.sg temperature operation, with a sign that allows micromotion shifts to be eliminated. This latter property has kindled the idea of clock operation on large ion crystals [15].…”

“…This ion has a number of fortuitous properties that are almost ideally suited for clock applications [14,15]. The 2.45 MHz linewidth of the 3 D 1 to 3 P o 0 detection transition provides the possibility of a very low Doppler cooling limit and yet sufficiently large for practical detection.…”

“…For ion-based clocks, a significant bottleneck to improved levels of accuracy is the relatively low stability achieved with a single ion. Recently singly ionised Lutetium has been proposed as a possible candidate to overcome this hurdle [14,15].…”