The celebrated Majorana representation is exploited to investigate spin squeezing in different classes of pure symmetric states of N qubits with two distinct spinors, namely the Dicke-class of states. On obtaining a g...
Project supported by the National Key Research and Development Program of China(Grant No.2016YFA0302101);the Initiative Program of State Key Laboratory of Precision Measurement Technology and Instruments
For most pulsed atomic clocks, the Dick effect is one of the main limits to reach its frequency stability limitation due to quantum projection noise. In this paper, we measure the phase noise of the local oscillator i...
Project supported by the National Natural Science Foundation of China(Grant Nos.11074248 and 11474320)
In the microwave 199Hg+ trapped-ion clock, the frequency instability degradation caused by the Dick effect is un- avoidable because of the periodical interrogating field. In this paper, the general expression of the ...