Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Andrzej Veitia"'
Autor:
Steven J. van Enk, Andrzej Veitia
The actual gate performed on, say, a qubit in a quantum computer may depend, not just on the actual laser pulses and voltages we programmed to implement the gate, but on its {\em context} as well. For example, it may depend on what gate has just been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1f7a706196bb347764a79c942433f8
http://arxiv.org/abs/1810.05945
http://arxiv.org/abs/1810.05945
In many experiments on microscopic quantum systems, it is implicitly assumed that when a macroscopic procedure or “instruction” is repeated many times – perhaps in different contexts – each application results in the same microscopic quantum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84675960a280f229100cc0c79914b713
http://arxiv.org/abs/1708.08173
http://arxiv.org/abs/1708.08173
Autor:
Rami Barends, Pedram Roushan, Austin G. Fowler, James Wenner, Benjamin Chiaro, Peter O'Malley, Daniel Sank, Evan Jeffrey, Andrew Dunsworth, Zijun Chen, Julian Kelly, Josh Mutus, Amit Vainsencher, Charles Neill, Yu Chen, Andrzej Veitia, Ted White, Alexander N. Korotkov, John M. Martinis, A. Megrant, Andrew Cleland, Brooks Campbell
Publikováno v:
Nature, vol 508, iss 7497
Barends, R; Kelly, J; Megrant, A; Veitia, A; Sank, D; Jeffrey, E; et al.(2014). Superconducting quantum circuits at the surface code threshold for fault tolerance. Nature, 508(7497), 500-503. doi: 10.1038/nature13171. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/81f38826
Barends, R; Kelly, J; Megrant, A; Veitia, A; Sank, D; Jeffrey, E; et al.(2014). Superconducting quantum circuits at the surface code threshold for fault tolerance. Nature, 508(7497), 500-503. doi: 10.1038/nature13171. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/81f38826
A quantum computer can solve hard problems, such as prime factoring, database searching and quantum simulation, at the cost of needing to protect fragile quantum states from error. Quantum error correction provides this protection by distributing a l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ada78ba2c636a4e0f2e99608be3df104
https://doi.org/10.1038/nature13171
https://doi.org/10.1038/nature13171
Autor:
Zhenda Xie, Chee Wei Wong, Mingbin Yu, Tian Zhong, Dim-Lee Kwong, XinAn Xu, Yongnan Li, Andrzej Veitia, Abhinav Kumar, Serdar Kocaman, Franco N. C. Wong
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate a single-photon SWAP gate between polarization and spatial momentum on a SOI chip. 19.8% error ratio is obtained, and phase coherence of the SWAP operation is measured via single photon interference with up to 58.7% visibility.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffd7e450b7316d10a37c732a3a57bbf4
https://doi.org/10.1364/cleo_qels.2017.ff2e.8
https://doi.org/10.1364/cleo_qels.2017.ff2e.8
Autor:
James Wenner, Daniel Sank, John M. Martinis, Andrey V. Rodionov, Rami Barends, Alexander N. Korotkov, Andrzej Veitia, Julian Kelly, Robert L. Kosut
Publikováno v:
Rodionov, AV; Veitia, A; Barends, R; Kelly, J; Sank, D; Wenner, J; et al.(2014). Compressed sensing quantum process tomography for superconducting quantum gates. Physical Review B-Condensed Matter and Materials Physics, 90(14). doi: 10.1103/PhysRevB.90.144504. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/6q09q2mx
Physical Review B-Condensed Matter and Materials Physics, vol 90, iss 14
Physical Review B, vol 90, iss 14
Physical Review B-Condensed Matter and Materials Physics, vol 90, iss 14
Physical Review B, vol 90, iss 14
We apply the method of compressed sensing (CS) quantum process tomography (QPT) to characterize quantum gates based on superconducting Xmon and phase qubits. Using experimental data for a two-qubit controlled-Z gate, we obtain an estimate for the pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7812ea4c18e348fa0ab9842f899db4a4
http://www.escholarship.org/uc/item/6q09q2mx
http://www.escholarship.org/uc/item/6q09q2mx
Autor:
Ben Chiaro, Alexander N. Korotkov, John M. Martinis, Zijun Chen, Evan Jeffrey, Andrzej Veitia, James Wenner, Daniel Sank, Brooks Campbell, Josh Mutus, Charles Neill, Rami Barends, Pedram Roushan, You Lung Chen, Ted White, C. Quintana, Peter O'Malley, Andrew Dunsworth, A. Megrant, Io-Chun Hoi, Austin G. Fowler, Julian Kelly, Andrew Cleland
Publikováno v:
Physical Review A, vol 90, iss 3
Physical Review A-Atomic, Molecular, and Optical Physics, vol 90, iss 3
Barends, R; Kelly, J; Veitia, A; Megrant, A; Fowler, AG; Campbell, B; et al.(2014). Rolling quantum dice with a superconducting qubit. Physical Review A-Atomic, Molecular, and Optical Physics, 90(3). doi: 10.1103/PhysRevA.90.030303. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/18x210pv
Physical Review A-Atomic, Molecular, and Optical Physics, vol 90, iss 3
Barends, R; Kelly, J; Veitia, A; Megrant, A; Fowler, AG; Campbell, B; et al.(2014). Rolling quantum dice with a superconducting qubit. Physical Review A-Atomic, Molecular, and Optical Physics, 90(3). doi: 10.1103/PhysRevA.90.030303. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/18x210pv
One of the key challenges in quantum information is coherently manipulating the quantum state. However, it is an outstanding question whether control can be realized with low error. Only gates from the Clifford group -- containing $\pi$, $\pi/2$, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87b8439e3002c84b10eb6f326c828d9b
https://escholarship.org/uc/item/18x210pv
https://escholarship.org/uc/item/18x210pv
We study a generalized double Jaynes-Cummings (JC) model where two entangled pairs of two-level atoms interact indirectly. We focus on the case where the cavities and the entangled pairs are uncorrelated. We show that there exist initial states of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc4131f1f93e9fa70f2602f48f480d07
http://arxiv.org/abs/1205.2728
http://arxiv.org/abs/1205.2728
Autor:
Mathieu Cliche, Andrzej Veitia
Publikováno v:
Physical Review A. 82
We study entanglement generation in a pair of qubits interacting with an initially correlated system. Using time independent perturbation theory and the adiabatic theorem, we show conditions under which the qubits become entangled as the joint system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::018128b9a8a5909a3a789e61111174d8
https://doi.org/10.1103/physreva.82.032329
https://doi.org/10.1103/physreva.82.032329
Autor:
Thomas Curtright, Andrzej Veitia
We develop and illustrate methods to compute all single particle potentials that underlie the logistic map, x --> sx(1-x) for 02. We illustrate the methods numerically for the cases s=5/2 and s=10/3. We develop and illustrate methods to compute all s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd35b79610ddf20ced50cfee3ae69565
http://cds.cern.ch/record/1268288
http://cds.cern.ch/record/1268288
Autor:
Krzysztof Pachucki, Andrzej Veitia
Publikováno v:
Physical Review A. 69
Relativistic nuclear recoil effects are studied for antiprotonic and muonic atoms. The generalization of the Breit-Pauli Hamiltonian including vacuum polarization is presented. Previous treatments are corrected, and the result for the 2S{sub 12}-2P{s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7354010827892f49c4f137bf3312f264
https://doi.org/10.1103/physreva.69.042501
https://doi.org/10.1103/physreva.69.042501