Spin coherent states phenomena probed by quantum state tomography in Zeeman perturbed nuclear quadrupole resonance

NMR Hamiltonian as an effective Hamiltonian to generate Schrödinger's cat states

“…However, from an experimental point of view, there are other requirements to do that, such as the ability to access information about the system's quantum state. This is achieved on arrangements of spin systems with a spatial order, as happens in solid crystals [27,28,39,45], at different semiconductor platforms [46][47][48][49], nitrogen vacancies reported by many groups [50][51][52][53][54][55], and liquid crystals [56].…”

“…( 1) fits the definition of a nuclear quadrupolar Hamiltonian [22,23]. From their similar qualities, the nuclear spin counterpart has been explored in many quantum information applications, such as the quantum simulation of a Bose-Einstein condensate of one mode [24], the definition of coherent states in the context of nuclear spin [25], and others [18,[26][27][28].…”

PULSEE: A software for the quantum simulation of an extensive set of nuclear magnetic and quadrupole resonance observables

“…These features are the reason for the success of magnetic resonance techniques in implementing one of the first quantum information processors: the high degree of control of nuclear spins that they provide lends naturally to the purposes of basic quantum computing, and has made it possible to witness for the first time the experimental realization of several quantum algorithms [7][8][9][10][11][12][13][14][15]. Specifically, the handling of quantum systems to perform data processing tasks in NMR is accomplished through the application of specific radio frequency (RF) pulses (logic gates) on ensemble states adequately prepared, called pseudopure states (PPS) [13,14,[16][17][18]. The logic gates can be executed with high fidelity due to the high level of control of the quantum evolution of nuclear spins.…”