Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Stephen D. Bartlett"'
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033049 (2023)
Current hardware for quantum computing suffers from high levels of noise, and so to achieve practical fault-tolerant quantum computing will require powerful and efficient methods to correct for errors in quantum circuits. Here, we explore the role an
Externí odkaz:
https://doaj.org/article/0f49200b25024cf5ae08a3e3d1f22f73
Autor:
J. Pablo Bonilla Ataides, David K. Tuckett, Stephen D. Bartlett, Steven T. Flammia, Benjamin J. Brown
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
The surface code is a keystone in quantum error correction, but it does not generally perform well against structured noise and suffers from large overheads. Here, the authors demonstrate that a variant of it has better performance and requires fewer
Externí odkaz:
https://doaj.org/article/dbeaddab908247d4871d694fbaf62447
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043218 (2022)
Fault-tolerant quantum computing will require accurate estimates of the resource overhead under different error correction strategies, but standard metrics such as gate fidelity and diamond distance have been shown to be poor predictors of logical pe
Externí odkaz:
https://doaj.org/article/c7415749750d4b358f70d7422b2d43a3
Publikováno v:
Quantum, Vol 6, p 815 (2022)
We propose an extension to the Pauli stabiliser formalism that includes fractional $2\pi/N$ rotations around the $Z$ axis for some integer $N$. The resulting generalised stabiliser formalism – denoted the XP stabiliser formalism – allows for a wi
Externí odkaz:
https://doaj.org/article/68a7720347d04c578aaf649652832fd3
Autor:
Filip K. Malinowski, Frederico Martins, Thomas B. Smith, Stephen D. Bartlett, Andrew C. Doherty, Peter D. Nissen, Saeed Fallahi, Geoffrey C. Gardner, Michael J. Manfra, Charles M. Marcus, Ferdinand Kuemmeth
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Controllable two-qubit interactions are necessary to build a functional quantum computer. Here the authors demonstrate fast, coherent swapping of two spin states mediated by a long, multi-electron quantum dot that could act as a tunable coupler media
Externí odkaz:
https://doaj.org/article/a3cd7381b11e4bc88987d02c1bbd0b9e
Publikováno v:
PRX Quantum, Vol 3, Iss 2, p 020361 (2022)
We present two classical algorithms for the simulation of universal quantum circuits on n qubits constructed from c instances of Clifford gates and t arbitrary-angle Z-rotation gates such as T gates. Our algorithms complement each other by performing
Externí odkaz:
https://doaj.org/article/f03713af7d594719a4d0671a65e30e9f
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013092 (2022)
The quantum logic gates used in the design of a quantum computer should be both universal, meaning arbitrary quantum computations can be performed, and fault-tolerant, meaning the gates keep errors from cascading out of control. A number of no-go the
Externí odkaz:
https://doaj.org/article/c73581003d3b49db923184c7da2714d3
Publikováno v:
PRX Quantum, Vol 1, Iss 2, p 020313 (2020)
We analyze a readout scheme for Majorana qubits based on dispersive coupling to a resonator. We consider two variants of Majorana qubits: the Majorana transmon and the Majorana box qubit. In both cases, the qubit-resonator interaction can produce siz
Externí odkaz:
https://doaj.org/article/70e28b0f5e9542748c8427cd54580888
Autor:
Sam Roberts, Stephen D. Bartlett
Publikováno v:
Physical Review X, Vol 10, Iss 3, p 031041 (2020)
A self-correcting quantum memory can store and protect quantum information for a time that increases without bound with the system size and without the need for active error correction. We demonstrate that symmetry can lead to self-correction in 3D s
Externí odkaz:
https://doaj.org/article/8aaac921428d4b2f837dc15556f3c178
Publikováno v:
Quantum, Vol 4, p 223 (2020)
Investigating the classical simulability of quantum circuits provides a promising avenue towards understanding the computational power of quantum systems. Whether a class of quantum circuits can be efficiently simulated with a probabilistic classical
Externí odkaz:
https://doaj.org/article/d2ab30794f394b048ce48c64e85bde2b