Zobrazeno 1 - 10
of 477
pro vyhledávání: '"E Economou"'
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p 043143 (2024)
Photonic parity projection plays an important role in photonic quantum information processing. Nondestructive parity projections normally require high-fidelity controlled-Z gates between photonic and matter qubits, which can be experimentally demandi
Externí odkaz:
https://doaj.org/article/3b0a383380234e93be5a19b8aba0d451
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p 043029 (2024)
Superconducting resonator couplers will likely become an essential component in modular semiconductor quantum dot (QD) spin qubit processors, as they help alleviate crosstalk and wiring issues as the number of qubits increases. Here, we focus on a th
Externí odkaz:
https://doaj.org/article/a4093f815cb74074b42cdb7b8505d8b9
Autor:
John S. Van Dyke, Karunya Shirali, George S. Barron, Nicholas J. Mayhall, Edwin Barnes, Sophia E. Economou
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p L012030 (2024)
Adaptive variational quantum simulation algorithms use information from a quantum computer to dynamically create optimal trial wave functions for a given problem Hamiltonian. A key ingredient in these algorithms is a predefined operator pool from whi
Externí odkaz:
https://doaj.org/article/d40cef3449f3451a9c214b0f31b9820b
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-8 (2023)
Abstract Variational quantum eigensolvers (VQEs) represent a powerful class of hybrid quantum-classical algorithms for computing molecular energies. Various numerical issues exist for these methods, however, including barren plateaus and large number
Externí odkaz:
https://doaj.org/article/659ec32feb26420381012dc4bc394145
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013254 (2024)
Adaptive quantum variational algorithms are particularly promising for simulating strongly correlated systems on near-term quantum hardware, but they are not yet viable due, in large part, to the severe coherence time limitations on current devices.
Externí odkaz:
https://doaj.org/article/e809049672934087b12ad5b3ff0d25d0
Publikováno v:
Quantum, Vol 8, p 1304 (2024)
Multipartite entangled states are an essential resource for sensing, quantum error correction, and cryptography. Color centers in solids are one of the leading platforms for quantum networking due to the availability of a nuclear spin memory that can
Externí odkaz:
https://doaj.org/article/737a36f5778940ab852a36201489c4bf
Publikováno v:
PRX Quantum, Vol 4, Iss 4, p 040322 (2023)
Quantum threshold theorems impose hard limits on the hardware capabilities to process quantum information. We derive tight and fundamental upper bounds to loss-tolerance thresholds in different linear-optical quantum information processing settings t
Externí odkaz:
https://doaj.org/article/044e7e88ea5344a5ad8ac15d993343da
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-7 (2022)
Abstract Multi-photon entangled graph states are a fundamental resource in quantum communication networks, distributed quantum computing, and sensing. These states can in principle be created deterministically from quantum emitters such as optically
Externí odkaz:
https://doaj.org/article/e397661405a9469881c485f6d54df8a8
Autor:
Oinam Romesh Meitei, Bryan T. Gard, George S. Barron, David P. Pappas, Sophia E. Economou, Edwin Barnes, Nicholas J. Mayhall
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-11 (2021)
Abstract The variational quantum eigensolver is currently the flagship algorithm for solving electronic structure problems on near-term quantum computers. The algorithm involves implementing a sequence of parameterized gates on quantum hardware to ge
Externí odkaz:
https://doaj.org/article/ed031a80d25e4753873ffb3b3b7e51ac
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033227 (2023)
We develop an adaptive method for quantum state preparation that utilizes randomness as an essential component and that does not require classical optimization. Instead, a cost function is minimized to prepare a desired quantum state through an adapt
Externí odkaz:
https://doaj.org/article/dca490e7b0d241cd94f3bdc100f19221