Projects per year
Abstract
Many existing schemes for linear-optical quantum computing (LOQC) depend on multiplexing (MUX), which uses dynamic routing to enable near-deterministic gates and sources to be constructed using heralded, probabilistic primitives. MUXing accounts for the overwhelming majority of active switching demands in current LOQC architectures. In this manuscript we introduce relative multiplexing (RMUX), a general-purpose optimisation which can dramatically reduce the active switching requirements for MUX in LOQC, and thereby reduce hardware complexity and energy consumption, as well as relaxing demands on performance for various photonic components. We discuss the application of RMUX to the generation of entangled states from probabilistic single-photon sources, and argue that an order of magnitude improvement in the rate of generation of Bell states can be achieved. In addition, we apply RMUX to the proposal for percolation of a 3D cluster state in [PRL 115, 020502 (2015)], and we find that RMUX allows an 2.4x increase in loss tolerance for this architecture.
Original language | English |
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Article number | 063013 |
Number of pages | 13 |
Journal | New Journal of Physics |
Volume | 19 |
DOIs | |
Publication status | Published - 6 Jun 2017 |
Research Groups and Themes
- Bristol Quantum Information Institute
- QETLabs
- Photonics and Quantum
Keywords
- Linear-optical quantum computing
Fingerprint
Dive into the research topics of 'Relative multiplexing for minimising switching in linear-optical quantum computing'. Together they form a unique fingerprint.Projects
- 3 Finished
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Fabricating a photonic quantum computer.
O'Brien, J. L. (Principal Investigator)
1/04/13 → 31/03/18
Project: Research
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Beyond Qubits with Photons (BQP)
O'Brien, J. L. (Principal Investigator)
30/09/12 → 29/09/17
Project: Research
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Lithium niobate quantum waveguide circuits
O'Brien, J. L. (Principal Investigator)
1/06/12 → 31/05/16
Project: Research