Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Earl T Campbell"'
Publikováno v:
New Journal of Physics, Vol 25, Iss 1, p 013002 (2023)
For certain restricted computational tasks, quantum mechanics provides a provable advantage over any possible classical implementation. Several of these results have been proven using the framework of measurement-based quantum computation (MBQC), whe
Externí odkaz:
https://doaj.org/article/06bbaa063df24252b21e831b397499c9
Publikováno v:
New Journal of Physics, Vol 19, Iss 6, p 063012 (2017)
Active error decoding and correction of topological quantum codes—in particular the toric code—remains one of the most viable routes to large scale quantum information processing. In contrast, passive error correction relies on the natural physic
Externí odkaz:
https://doaj.org/article/27e58d69e0ba4ae4ace0377ef305b868
Publikováno v:
New Journal of Physics, Vol 16, Iss 6, p 063038 (2014)
Qudit toric codes are a natural higher-dimensional generalization of the well-studied qubit toric code. However, standard methods for error correction of the qubit toric code are not applicable to them. Novel decoders are needed. In this paper we int
Externí odkaz:
https://doaj.org/article/1882868ebd064f3fb74b45799430e5b8
Publikováno v:
Quantum, Vol 6, p 637 (2022)
A highly anticipated use of quantum computers is the simulation of complex quantum systems including molecules and other many-body systems. One promising method involves directly applying a linear combination of unitaries (LCU) to approximate a Taylo
Externí odkaz:
https://doaj.org/article/cdda8d2f59b845d49e23ea3b96d582ca
Autor:
Christopher Chamberland, Kyungjoo Noh, Patricio Arrangoiz-Arriola, Earl T. Campbell, Connor T. Hann, Joseph Iverson, Harald Putterman, Thomas C. Bohdanowicz, Steven T. Flammia, Andrew Keller, Gil Refael, John Preskill, Liang Jiang, Amir H. Safavi-Naeini, Oskar Painter, Fernando G.S.L. Brandão
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010329 (2022)
We present a comprehensive architectural analysis for a proposed fault-tolerant quantum computer based on cat codes concatenated with outer quantum error-correcting codes. For the physical hardware, we propose a system of acoustic resonators coupled
Externí odkaz:
https://doaj.org/article/a932e83203284b7abd8cb0c81214cb3e
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010331 (2022)
Lattice-surgery protocols allow for the efficient implementation of universal gate sets with two-dimensional topological codes where qubits are constrained to interact with one another locally. In this work, we first introduce a decoder capable of co
Externí odkaz:
https://doaj.org/article/042f3fbb52404bd8ab5a0623739e5bb1
Publikováno v:
Quantum, Vol 5, p 495 (2021)
We consider simulating quantum systems on digital quantum computers. We show that the performance of quantum simulation can be improved by simultaneously exploiting commutativity of the target Hamiltonian, sparsity of interactions, and prior knowledg
Externí odkaz:
https://doaj.org/article/44ec6480e0e54b3fb68943c392ea412e
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020340 (2021)
Single-shot error correction corrects data noise using only a single round of noisy measurements on the data qubits, removing the need for intensive measurement repetition. We introduce a general concept of confinement for quantum codes, which roughl
Externí odkaz:
https://doaj.org/article/77471cb9f2f04e9e8d2ab81e27b1f1dc
Publikováno v:
PRX Quantum, Vol 2, Iss 1, p 010345 (2021)
Consumption of magic states promotes the stabilizer model of computation to universal quantum computation. Here, we propose three different classical algorithms for simulating such universal quantum circuits, and characterize them by establishing pre
Externí odkaz:
https://doaj.org/article/65a212c85b04425f94c03e7d8251598f
Publikováno v:
Physical Review X, Vol 11, Iss 1, p 011028 (2021)
The estimation of multiple parameters in quantum metrology is important for a vast array of applications in quantum information processing. However, the unattainability of fundamental precision bounds for incompatible observables greatly diminishes t
Externí odkaz:
https://doaj.org/article/0f365f6992504cff8ea8c515b8f7ac79