Measuring the Loschmidt Amplitude for Finite-Energy Properties of the Fermi-Hubbard Model on an Ion-Trap Quantum Computer

Autor: Kévin Hémery, Khaldoon Ghanem, Eleanor Crane, Sara L. Campbell, Joan M. Dreiling, Caroline Figgatt, Cameron Foltz, John P. Gaebler, Jacob Johansen, Michael Mills, Steven A. Moses, Juan M. Pino, Anthony Ransford, Mary Rowe, Peter Siegfried, Russell P. Stutz, Henrik Dreyer, Alexander Schuckert, Ramil Nigmatullin

Publikováno v: PRX Quantum, Vol 5, Iss 3, p 030323 (2024)

Calculating the equilibrium properties of condensed-matter systems is one of the promising applications of near-term quantum computing. Recently, hybrid quantum-classical time-series algorithms have been proposed to efficiently extract these properti

Externí odkaz: https://doaj.org/article/7d99a2e0bc8a46b89c6176edbf0bde54

High Fidelity State Preparation and Measurement of Ion Hyperfine Qubits with I>12

Autor: Fangzhao Alex An, Anthony Ransford, Andrew Schaffer, Lucas R. Sletten, John Gaebler, James Hostetter, Grahame Vittorini

Publikováno v: Physical Review Letters. 129

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85a19804fecdd3280ec74560e58955ef
https://doi.org/10.1103/physrevlett.129.130501

High fidelity state preparation and measurement of ion qubits with spin I > ½

Autor: Andrew Schaffer, Fangzhao Alex An, Anthony Ransford, Lucas R. Sletten, John Gaebler, James Hostetter, Grahame Vittorini

Publikováno v: 2022 IEEE International Conference on Quantum Computing and Engineering (QCE).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34b12244363de9dc8dce147d6169513b
https://doi.org/10.1109/qce53715.2022.00120

Background free high fidelity state preparation and measurement (SPAM) in a 171Yb+ qubit (Conference Presentation)

Autor: Wesley C. Campbell, Anthony Ransford, Michael S Ip, Conrad Roman

Publikováno v: Quantum Information Science, Sensing, and Computation XII.

We present two novel approaches to state detection of qubits defined with trapped ions. The first uses simple pulse sequences from a mode-locked laser to induce state-dependent excitations in less than 1 ns. The resulting atomic fluorescence occurs i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37372f73bed6b8af4b02f0716683bee3
https://doi.org/10.1117/12.2559328

Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions

Autor: Wesley C. Campbell, Andrew Jayich, Anthony Ransford, Michael S Ip, Xueping Long, Conrad Roman

Publikováno v: Physical review letters, vol 121, iss 4
Ip, M; Ransford, A; Jayich, AM; Long, X; Roman, C; & Campbell, WC. (2018). Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions. PHYSICAL REVIEW LETTERS, 121(4). doi: 10.1103/PhysRevLett.121.043201. UCLA: Retrieved from: http://www.escholarship.org/uc/item/6k6545xp

An atomic transition can be addressed by a single tooth of an optical frequency comb if the excited state lifetime ($\tau$) is significantly longer than the pulse repetition period ($T_\mathrm{r}$). In the crossover regime between fully-resolved and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ba1bff5df9474b96d61c583be02a215
https://escholarship.org/uc/item/6k6545xp