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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 Staff Publications |
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