Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevX.4.041041
Title: Freely scalable quantum technologies using cells of 5-to-50 qubits with very lossy and noisy photonic links
Authors: Nickerson, N.H
Fitzsimons, J.F 
Benjamin, S.C
Keywords: Cells
Clocks
Cytology
Quantum computers
Quantum optics
Computer clocks
Entanglement purification
Large-scale computing
Nitrogen-vacancy center
Quantum Computing
Quantum physics
Quantum technologies
Superconducting qubits
Quantum entanglement
Issue Date: 2014
Citation: Nickerson, N.H, Fitzsimons, J.F, Benjamin, S.C (2014). Freely scalable quantum technologies using cells of 5-to-50 qubits with very lossy and noisy photonic links. Physical Review X 4 (4) : 41041. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevX.4.041041
Rights: Attribution 4.0 International
Abstract: Exquisite quantum control has now been achieved in small ion traps, in nitrogen-vacancy centers and in superconducting qubit clusters. We can regard such a system as a universal cell with diverse technological uses from communication to large-scale computing, provided that the cell is able to network with others and overcome any noise in the interlinks. Here, we show that loss-tolerant entanglement purification makes quantum computing feasible with the noisy and lossy links that are realistic today: With a modestly complex cell design, and using a surface code protocol with a network noise threshold of 13.3%, we find that interlinks that attempt entanglement at a rate of 2 MHz but suffer 98% photon loss can result in kilohertz computer clock speeds (i.e., rate of high-fidelity stabilizer measurements). Improved links would dramatically increase the clock speed. Our simulations employ local gates of a fidelity already achieved in ion trap devices.
Source Title: Physical Review X
URI: https://scholarbank.nus.edu.sg/handle/10635/183696
ISSN: 21603308
DOI: 10.1103/PhysRevX.4.041041
Rights: Attribution 4.0 International
Appears in Collections:Elements
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