Spin coherent states phenomena probed by quantum state tomography in Zeeman perturbed nuclear quadrupole resonance.
TELES, João; AUCCAISE, Ruben; RIVERA-ASCONA, Christian; ARAUJO-FERREIRA, Arthur G.; ANDREETA, José Pedro; BONAGAMBA, Tito José.
TELES, João; AUCCAISE, Ruben; RIVERA-ASCONA, Christian; ARAUJO-FERREIRA, Arthur G.; ANDREETA, José Pedro; BONAGAMBA, Tito José.
 Abstract: Recently, we reported an experimental implementation of quantum information processing (QIP) by nuclear quadrupole resonance (NQR). In this work, we present the first quantum state tomography (QST) experimental implementation in the NQR QIP context. Two approaches are proposed, employing coherence selection by temporal and spatial averaging. Conditions for reduction in the number of cycling steps are analyzed, which can be helpful for larger spin systems. The QST method was applied to the study of spin coherent states, where the alignment-to-orientation phenomenon and the evolution of squeezed spin states show the effect of the nonlinear quadrupole interaction intrinsic to the NQR system. The quantum operations were implemented using a single-crystal sample of KClO3 and observing 35Cl nuclei, which posses spin 3/2. | |
| Quantum Information Processing |
| v. 17, n. 7, p. 177-1-177-23 - Ano: 2018 |
| Fator de Impacto: 2,192 |
| http://dx.doi.org/10.1007/s11128-018-1947-1 |  @article={002888429,author = {TELES, João; AUCCAISE, Ruben; RIVERA-ASCONA, Christian; ARAUJO-FERREIRA, Arthur G.; ANDREETA, José Pedro; BONAGAMBA, Tito José.},title={Spin coherent states phenomena probed by quantum state tomography in Zeeman perturbed nuclear quadrupole resonance},journal={Quantum Information Processing},note={v. 17, n. 7, p. 177-1-177-23},year={2018}} |