Ultra-large-scale continuous-variable cluster states multiplexed in the time domain
By S. Yokoyama, Ryuji Ukai, S. Armstrong, C. Sornphiphatphong, T. Kaji, Shigenari Suzuki, J. Yoshikawa, H. Yonezawa, Nicolas C. Menicucci, Akira Furusawa. Nature Photonics, 2013
519 citations recorded by the source corpus.
Quantum computers promise ultrafast performance for certain tasks1. Experimentally appealing, measurement-based quantum computation2 requires an entangled resource called a cluster state3, with long computations requiring large cluster states. Previously, the largest cluster state consisted of eight photonic qubits4 or light modes5, and the largest multipartite entangled state of any sort involved 14 trapped ions6. These implementations involve quantum entities separated in space and, in general, each experimental apparatus is used only once. Here, we circumvent this inherent inefficiency by multiplexing light modes in the time domain. We deterministically generate and fully characterize a continuous-variable cluster state7,8 containing more than 10,000 entangled modes. This is, by three orders of magnitude, the largest entangled state created to date. The entangled modes are individually addressable wave packets of light in two beams. Furthermore, we present an efficient scheme for measurement-based quantum computation on this cluster state based on sequential applications of quantum teleportation. A continuous-variable cluster state containing more than 10,000 entangled modes is deterministically generated and fully characterized. The developed time-domain multiplexing method allows each quantum mode to be manipulated by the same optical components at different times. An efficient scheme for measurement-based quantum computation on this cluster state is presented.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/ab23a85ab1d0016de73141b9be52011fa9709973
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Citations in the corpus
- Fault-tolerant measurement-based quantum computing with continuous-variable cluster states. (2013, background): “When it comes to measurement-based QC, optical CV cluster states [5, 6] offer a distinct advantage over their optical-qubit counterparts [7, 8] because they are much easier to make experimentally [9–11].”
- Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer (2020, background): “There has been substantial progress in designing and deterministically generating CV cluster states in one [9–11], two [12–16], and higher dimensions [17–19].”
- Quantum memories: emerging applications and recent advances (2015, unknown): “Further progress has been made with preliminary experimental demonstrations [255, 256] and more advanced theoretical proposals [257–259], which led to ultra-large-scale generation of time-multiplexed continuous-variable cluster states [260].”
- 5. Squeezed Light (2014, unknown): “Recently, exciting developments have been reported on creation of multimode quadrature-entangled states by simultaneous pumping of multiple spatial [84], spectral [85, 86], or temporal [87] modes of an SPDC arrangement.”