Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Sergey Bravyi"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033309 (2024)
Multi-product formulas (MPFs) are linear combinations of Trotter circuits offering high-quality simulation of Hamiltonian time evolution with fewer Trotter steps. Here we report two contributions aimed at making multi-product formulas more viable for
Externí odkaz:
https://doaj.org/article/0323a375067c4bfabf006e9dad2c053f
Publikováno v:
Quantum, Vol 8, p 1348 (2024)
Motivated by quantum network applications over classical channels, we initiate the study of $n$-party resource states from which LOCC protocols can create EPR-pairs between any $k$ disjoint pairs of parties. We give constructions of such states where
Externí odkaz:
https://doaj.org/article/5308f1504727476bad7cf718485795bb
Publikováno v:
PRX Quantum, Vol 5, Iss 1, p 010329 (2024)
Whether or not the Kronecker coefficients of the symmetric group count some set of combinatorial objects is a longstanding open question. In this work we show that a given Kronecker coefficient is proportional to the rank of a projector that can be m
Externí odkaz:
https://doaj.org/article/5ab185bb7e044988a26749decf0b37e4
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-12 (2022)
Abstract Clifford group lies at the core of quantum computation—it underlies quantum error correction, its elements can be used to perform magic state distillation and they form randomized benchmarking protocols, Clifford group is used to study qua
Externí odkaz:
https://doaj.org/article/730a9b93eab445dd9282c75a00c82c16
Publikováno v:
Quantum, Vol 7, p 1173 (2023)
We consider the computational task of sampling a bit string $x$ from a distribution $\pi(x)=|\langle x|\psi\rangle|^2$, where $\psi$ is the unique ground state of a local Hamiltonian $H$. Our main result describes a direct link between the inverse sp
Externí odkaz:
https://doaj.org/article/ae9a550e82bd4a07b48f1fc27ba017bc
Autor:
Ewout van den Berg, Sergey Bravyi, Jay M. Gambetta, Petar Jurcevic, Dmitri Maslov, Kristan Temme
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033193 (2023)
Generating samples from the output distribution of a quantum circuit is a ubiquitous task used as a building block of many quantum algorithms. Here we show how to accomplish this task on a noisy quantum processor lacking full-blown error correction f
Externí odkaz:
https://doaj.org/article/8485be8fe5e44aac8507d96c2c968734
Publikováno v:
Quantum, Vol 6, p 678 (2022)
We show how to apply the recursive quantum approximate optimization algorithm (RQAOA) to MAX-$k$-CUT, the problem of finding an approximate $k$-vertex coloring of a graph. We compare this proposal to the best known classical and hybrid classical-quan
Externí odkaz:
https://doaj.org/article/cf774512d7ef49079fbf1e8f7f9dcc4c
Autor:
Andrew Eddins, Mario Motta, Tanvi P. Gujarati, Sergey Bravyi, Antonio Mezzacapo, Charles Hadfield, Sarah Sheldon
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010309 (2022)
Quantum computers are promising for simulations of chemical and physical systems, but the limited capabilities of today’s quantum processors permit only small, and often approximate, simulations. Here we present a method, classical entanglement for
Externí odkaz:
https://doaj.org/article/c489a2bf1728443ab47f9548c6343772
Publikováno v:
Quantum, Vol 5, p 580 (2021)
The Clifford group is a finite subgroup of the unitary group generated by the Hadamard, the CNOT, and the Phase gates. This group plays a prominent role in quantum error correction, randomized benchmarking protocols, and the study of entanglement. He
Externí odkaz:
https://doaj.org/article/7d0859525d074bea9cde649fb06421fc
Autor:
David K. Tuckett, Andrew S. Darmawan, Christopher T. Chubb, Sergey Bravyi, Stephen D. Bartlett, Steven T. Flammia
Publikováno v:
Physical Review X, Vol 9, Iss 4, p 041031 (2019)
The surface code, with a simple modification, exhibits ultrahigh error-correction thresholds when the noise is biased toward dephasing. Here, we identify features of the surface code responsible for these ultrahigh thresholds. We provide strong evide
Externí odkaz:
https://doaj.org/article/1ccc15437af8413aa16640696a2580a9