Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Barbara M. Terhal"'
Publikováno v:
Quantum, Vol 6, p 830 (2022)
Quantum phase estimation is a cornerstone in quantum algorithm design, allowing for the inference of eigenvalues of exponentially-large sparse matrices.The maximum rate at which these eigenvalues may be learned, –known as the Heisenberg limit–, i
Externí odkaz:
https://doaj.org/article/1ceee52ca34e4036b352c69a4c78471f
Autor:
Joel Klassen, Barbara M. Terhal
Publikováno v:
Quantum, Vol 3, p 139 (2019)
We examine the problem of determining if a 2-local Hamiltonian is stoquastic by local basis changes. We analyze this problem for two-qubit Hamiltonians, presenting some basic tools and giving a concrete example where using unitaries beyond Clifford r
Externí odkaz:
https://doaj.org/article/59424eb3078a495e89837522cfaca283
Autor:
Alessandro Bruno, Leonardo DiCarlo, B. Varbanov, Marc Beekman, Nandini Muthusubramanian, Miguel S Moreira, Francesco Battistel, Jorge Marques, Nadia Haider, Wouter Vlothuizen, Barbara M. Terhal, Christos Zachariadis, Hany Ali
Publikováno v:
Nature physics 18(1), 80-86 (2022). doi:10.1038/s41567-021-01423-9
We realize a suite of logical operations on a distance-two logical qubit stabilized using repeated error detection cycles. Logical operations include initialization into arbitrary states, measurement in the cardinal bases of the Bloch sphere, and a u
Autor:
Christophe Vuillot, Lingling Lao, Ben Criger, Carmen García Almudéver, Koen Bertels, Barbara M Terhal
Publikováno v:
New Journal of Physics, Vol 21, Iss 3, p 033028 (2019)
The large-scale execution of quantum algorithms requires basic quantum operations to be implemented fault-tolerantly. The most popular technique for accomplishing this, using the devices that can be realized in the near term, uses stabilizer codes wh
Externí odkaz:
https://doaj.org/article/237f9f48e7f443bebbfec3d9b77d6349
Publikováno v:
New Journal of Physics, Vol 21, Iss 2, p 023022 (2019)
Quantum phase estimation (QPE) is the workhorse behind any quantum algorithm and a promising method for determining ground state energies of strongly correlated quantum systems. Low-cost QPE techniques make use of circuits which only use a single anc
Externí odkaz:
https://doaj.org/article/0900f20a1cff469789b6b48f427a09aa
Publikováno v:
PRX quantum 2(3), 030314 (2021). doi:10.1103/PRXQuantum.2.030314
PRX Quantum
PRX Quantum, 2(3)
PRX Quantum
PRX Quantum, 2(3)
Leakage outside of the qubit computational subspace poses a threatening challenge to quantum error correction (QEC). We propose a scheme using two leakage-reduction units (LRUs) that mitigate these issues for a transmon-based surface code, without re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fdba57415e3c61ad14300b5f9c1344f
http://resolver.tudelft.nl/uuid:13887f6b-dcb9-4874-ac02-c8c370111154
http://resolver.tudelft.nl/uuid:13887f6b-dcb9-4874-ac02-c8c370111154
Autor:
Yang Wang, Barbara M. Terhal
Publikováno v:
Physical Review A: covering atomic, molecular, and optical physics and quantum information, 104(3)
Physical review / A 104(3), 032407 (2021). doi:10.1103/PhysRevA.104.032407
Physical review / A 104(3), 032407 (2021). doi:10.1103/PhysRevA.104.032407
We present a Dicke state preparation scheme which uses global control of $N$ spin qubits: our scheme is based on the standard phase estimation algorithm, which estimates the eigenvalue of a unitary operator. The scheme prepares a Dicke state non-dete
Autor:
Seth Lloyd, Barbara M Terhal
Publikováno v:
New Journal of Physics, Vol 18, Iss 2, p 023042 (2016)
We show how to perform universal Hamiltonian and adiabatic computing using a time-independent Hamiltonian on a 2D grid describing a system of hopping particles which string together and interact to perform the computation. In this construction, the m
Externí odkaz:
https://doaj.org/article/8c68c486dfad45b188cc1ba3b4b032a2
Publikováno v:
Quantum Science and Technology, 5(4)
Quantum Science and Technology
Quantum Science and Technology, 2020, 5 (4), pp.043001. ⟨10.1088/2058-9565/ab98a5⟩
Quantum Science and Technology
Quantum Science and Technology, 2020, 5 (4), pp.043001. ⟨10.1088/2058-9565/ab98a5⟩
We review some of the recent efforts in devising and engineering bosonic qubits for superconducting devices, with emphasis on the Gottesman-Kitaev-Preskill (GKP) qubit. We present some new results on decoding repeated GKP error correction using finit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bc07c91818d17b15d3e1abba8ef431b
http://resolver.tudelft.nl/uuid:bef20098-77cd-4d45-89e3-beec9dcabe03
http://resolver.tudelft.nl/uuid:bef20098-77cd-4d45-89e3-beec9dcabe03
Autor:
V. P. Ostroukh, Thomas E. O'Brien, Brian Tarasinski, Leonardo DiCarlo, B. Varbanov, Francesco Battistel, Barbara M. Terhal
Publikováno v:
npj Quantum Information
npj Quantum Information, Vol 6, Iss 1, Pp 1-13 (2020)
NPJ Quantum Information, 6(1)
npj Quantum Information, Vol 6, Iss 1, Pp 1-13 (2020)
NPJ Quantum Information, 6(1)
Leakage outside of the qubit computational subspace, present in many leading experimental platforms, constitutes a threatening error for quantum error correction (QEC) for qubits. We develop a leakage-detection scheme via Hidden Markov models (HMMs)