scholarly journals Generation of time-domain-multiplexed two-dimensional cluster state

Science ◽  
2019 ◽  
Vol 366 (6463) ◽  
pp. 373-376 ◽  
Author(s):  
Warit Asavanant ◽  
Yu Shiozawa ◽  
Shota Yokoyama ◽  
Baramee Charoensombutamon ◽  
Hiroki Emura ◽  
...  
Keyword(s):  
Quantum Computing ◽  
Large Scale ◽  
Cluster State ◽  
Continuous Variable ◽  
Error Correcting Codes ◽  
Square Lattice ◽  
Two Dimensional ◽  
Report Generation ◽  
Cluster States ◽  
Variable Cluster

Entanglement is the key resource for measurement-based quantum computing. It is stored in quantum states known as cluster states, which are prepared offline and enable quantum computing by means of purely local measurements. Universal quantum computing requires cluster states that are both large and possess (at least) a two-dimensional topology. Continuous-variable cluster states—based on bosonic modes rather than qubits—have previously been generated on a scale exceeding one million modes, but only in one dimension. Here, we report generation of a large-scale two-dimensional continuous-variable cluster state. Its structure consists of a 5- by 1240-site square lattice that was tailored to our highly scalable time-multiplexed experimental platform. It is compatible with Bosonic error-correcting codes that, with higher squeezing, enable fault-tolerant quantum computation.

scholarly journals Generating Fault-Tolerant Cluster States from Crystal Structures

Quantum ◽  
2020 ◽  
Vol 4 ◽  
pp. 295 ◽  
Author(s):  
Michael Newman ◽  
Leonardo Andreta de Castro ◽  
Kenneth R. Brown
Keyword(s):  
Quantum Computing ◽  
Fault Tolerance ◽  
Crystal Structures ◽  
Fault Tolerant ◽  
Cluster State ◽  
Error Correcting Codes ◽  
Noise Model ◽  
Cluster States ◽  
Promising Alternative ◽  
Quantum Error

Measurement-based quantum computing (MBQC) is a promising alternative to traditional circuit-based quantum computing predicated on the construction and measurement of cluster states. Recent work has demonstrated that MBQC provides a more general framework for fault-tolerance that extends beyond foliated quantum error-correcting codes. We systematically expand on that paradigm, and use combinatorial tiling theory to study and construct new examples of fault-tolerant cluster states derived from crystal structures. Included among these is a robust self-dual cluster state requiring only degree-3 connectivity. We benchmark several of these cluster states in the presence of circuit-level noise, and find a variety of promising candidates whose performance depends on the specifics of the noise model. By eschewing the distinction between data and ancilla, this malleable framework lays a foundation for the development of creative and competitive fault-tolerance schemes beyond conventional error-correcting codes.

scholarly journals Ultra-large-scale continuous-variable cluster states multiplexed in the time domain

2013 ◽  
Vol 7 (12) ◽  
pp. 982-986 ◽  
Author(s):  
Shota Yokoyama ◽  
Ryuji Ukai ◽  
Seiji C. Armstrong ◽  
Chanond Sornphiphatphong ◽  
Toshiyuki Kaji ◽  
...  
Keyword(s):  
Time Domain ◽  
Large Scale ◽  
Continuous Variable ◽  
Cluster States ◽  
Variable Cluster ◽  
The Time Domain

scholarly journals Experimental generation of four-mode continuous-variable cluster states

2008 ◽  
Vol 78 (1) ◽  
Author(s):  
Mitsuyoshi Yukawa ◽  
Ryuji Ukai ◽  
Peter van Loock ◽  
Akira Furusawa
Keyword(s):  
Continuous Variable ◽  
Cluster States ◽  
Variable Cluster

scholarly journals Cluster States from Gaussian States: Essential Diagnostic Tools for Continuous-Variable One-Way Quantum Computing

PRX Quantum ◽  
2021 ◽  
Vol 2 (3) ◽  
Author(s):  
Carlos González-Arciniegas ◽  
Paulo Nussenzveig ◽  
Marcelo Martinelli ◽  
Olivier Pfister
Keyword(s):  
Quantum Computing ◽  
Continuous Variable ◽  
Diagnostic Tools ◽  
Cluster States ◽  
Gaussian States

scholarly journals Architecture and noise analysis of continuous-variable quantum gates using two-dimensional cluster states

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
Mikkel V. Larsen ◽  
Jonas S. Neergaard-Nielsen ◽  
Ulrik L. Andersen
Keyword(s):  
Noise Analysis ◽  
Continuous Variable ◽  
Quantum Gates ◽  
Two Dimensional ◽  
Cluster States
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