Fundamental Limits of Communication in Distributed Computation Frameworks

2021 ◽  
Author(s):  
Solmaz Torabi Ardakani
Keyword(s):  
Distributed Computation ◽  
Fundamental Limits

scholarly journals Timely Distributed Computation With Stragglers

2020 ◽  
Vol 68 (9) ◽  
pp. 5273-5282 ◽  
Author(s):  
Baturalp Buyukates ◽  
Sennur Ulukus
Keyword(s):  
Distributed Computation

Deadlock models in distributed computation

2016 ◽  
Author(s):  
Valmir Carneiro Barbosa ◽  
Alan Diêgo A. Carneiro ◽  
Fábio Protti ◽  
Uéverton S. Souza
Keyword(s):  
Distributed Computation

scholarly journals Fundamental limits of electron and nuclear spin qubit lifetimes in an isolated self-assembled quantum dot

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
George Gillard ◽  
Ian M. Griffiths ◽  
Gautham Ragunathan ◽  
Ata Ulhaq ◽  
Callum McEwan ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spin Relaxation ◽  
Nuclear Spin ◽  
Operating Conditions ◽  
External Control ◽  
Spin Qubits ◽  
Fundamental Limits ◽  
Trade Offs ◽  
Wide Range ◽  
Spin Qubit

AbstractCombining external control with long spin lifetime and coherence is a key challenge for solid state spin qubits. Tunnel coupling with electron Fermi reservoir provides robust charge state control in semiconductor quantum dots, but results in undesired relaxation of electron and nuclear spins through mechanisms that lack complete understanding. Here, we unravel the contributions of tunnelling-assisted and phonon-assisted spin relaxation mechanisms by systematically adjusting the tunnelling coupling in a wide range, including the limit of an isolated quantum dot. These experiments reveal fundamental limits and trade-offs of quantum dot spin dynamics: while reduced tunnelling can be used to achieve electron spin qubit lifetimes exceeding 1 s, the optical spin initialisation fidelity is reduced below 80%, limited by Auger recombination. Comprehensive understanding of electron-nuclear spin relaxation attained here provides a roadmap for design of the optimal operating conditions in quantum dot spin qubits.

scholarly journals Fundamental Limits of HRR Profiling and Velocity Compensation for Stepped-Frequency Waveforms

2014 ◽  
Vol 62 (17) ◽  
pp. 4490-4504 ◽  
Author(s):  
Yimin Liu ◽  
Tianyao Huang ◽  
Huadong Meng ◽  
Xiqin Wang
Keyword(s):  
Fundamental Limits ◽  
Stepped Frequency

Fundamental limits to the measurement of the polarization of classical light

2021 ◽  
pp. 1-1
Author(s):  
Antonio Mecozzi ◽  
Cristian Antonelli ◽  
Mark Shtaif
Keyword(s):  
Fundamental Limits

Fundamental limits on the precision of in-memory architectures

2020 ◽  
Author(s):  
Sujan K. Gonugondla ◽  
Charbel Sakr ◽  
Hassan Dbouk ◽  
Naresh R. Shanbhag
Keyword(s):  
Fundamental Limits ◽  
Memory Architectures
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