Quantum Non-Gaussianity of Multiphonon States of a Single Atom

0559663 - ÚPT 2023 RIV US eng J - Journal Article
Podhora, L. - Lachman, L. - Pham, Minh Tuan - Lešundák, Adam - Číp, Ondřej - Slodička, L. - Filip, R.
Quantum Non-Gaussianity of Multiphonon States of a Single Atom.
Physical Review Letters. Roč. 129, č. 1 (2022), č. článku 013602. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA ČR(CZ) GA19-14988S; GA MŠMT(CZ) EF16_026/0008460
EU Projects: European Commission(XE) 20FUN01 - TSCAC
Institutional support: RVO:68081731
Keywords : Quantum non-Gaussian mechanical * Mechanical Fock state * phonon distribution * multi-phonon states of a single atom
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 8.6, year: 2022
Method of publishing: Limited access
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.129.013602

Quantum non-Gaussian mechanical states are already required in a range of applications. The discrete building blocks of such states are the energy eigenstates???Fock states. Despite progress in their preparation, the remaining imperfections can still invisibly cause loss of the aspects critical for their applications. We derive and apply the most challenging hierarchy of quantum non-Gaussian criteria on the characterization of single trapped-ion oscillator mechanical Fock states with up to 10 phonons. We analyze the depth of these quantum non-Gaussian features under intrinsic mechanical heating and predict their requirement for reaching quantum advantage in the sensing of a mechanical force.
Permanent Link: https://hdl.handle.net/11104/0336872