scholarly journals The parity operator: Applications in quantum metrology

2021 ◽  
Vol 3 (1) ◽  
pp. 014701
Author(s):  
Richard J. Birrittella ◽  
Paul M. Alsing ◽  
Christopher C. Gerry
Keyword(s):  
Quantum Metrology ◽  
Parity Operator

scholarly journals Distributed quantum metrology with a single squeezed-vacuum source

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
Dario Gatto ◽  
Paolo Facchi ◽  
Frank A. Narducci ◽  
Vincenzo Tamma
Keyword(s):  
Quantum Metrology ◽  
Squeezed Vacuum

scholarly journals Multiparameter quantum metrology with postselection measurements

2021 ◽  
Vol 62 (1) ◽  
pp. 012102
Author(s):  
Le Bin Ho ◽  
Yasushi Kondo
Keyword(s):  
Quantum Metrology

scholarly journals A variational toolbox for quantum multi-parameter estimation

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Johannes Jakob Meyer ◽  
Johannes Borregaard ◽  
Jens Eisert
Keyword(s):  
Parameter Estimation ◽  
Information Science ◽  
Quantum Algorithms ◽  
Continuous Variable ◽  
General Interest ◽  
Quantum Metrology ◽  
Estimation Problems ◽  
General Parameter ◽  
Quantum Technology ◽  
Aided Design

AbstractWith an ever-expanding ecosystem of noisy and intermediate-scale quantum devices, exploring their possible applications is a rapidly growing field of quantum information science. In this work, we demonstrate that variational quantum algorithms feasible on such devices address a challenge central to the field of quantum metrology: The identification of near-optimal probes and measurement operators for noisy multi-parameter estimation problems. We first introduce a general framework that allows for sequential updates of variational parameters to improve probe states and measurements and is widely applicable to both discrete and continuous-variable settings. We then demonstrate the practical functioning of the approach through numerical simulations, showcasing how tailored probes and measurements improve over standard methods in the noisy regime. Along the way, we prove the validity of a general parameter-shift rule for noisy evolutions, expected to be of general interest in variational quantum algorithms. In our approach, we advocate the mindset of quantum-aided design, exploiting quantum technology to learn close to optimal, experimentally feasible quantum metrology protocols.

scholarly journals The quantum metrology triangle experiment: quantization tests of an electron pump

2010 ◽  
Vol 21 (6) ◽  
pp. 609-615 ◽  
Author(s):  
S Sassine ◽  
B Steck ◽  
N Feltin ◽  
L Devoille ◽  
B Chenaud ◽  
...  
Keyword(s):  
Quantum Metrology

scholarly journals Investigating quantum metrology in noisy channels

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
B. J. Falaye ◽  
A. G. Adepoju ◽  
A. S. Aliyu ◽  
M. M. Melchor ◽  
M. S. Liman ◽  
...  
Keyword(s):  
Quantum Metrology ◽  
Noisy Channels

scholarly journals Optimal Scheme for Quantum Metrology

2021 ◽  
pp. 2100080
Author(s):  
Jing Liu ◽  
Mao Zhang ◽  
Hongzhen Chen ◽  
Lingna Wang ◽  
Haidong Yuan
Keyword(s):  
Quantum Metrology ◽  
Optimal Scheme

scholarly journals Loschmidt echo for quantum metrology

2016 ◽  
Vol 94 (1) ◽  
Author(s):  
Tommaso Macrì ◽  
Augusto Smerzi ◽  
Luca Pezzè
Keyword(s):  
Quantum Metrology ◽  
Loschmidt Echo

scholarly journals Electron counting capacitance standard and quantum metrology triangle experiments at PTB

Metrologia ◽  
2017 ◽  
Vol 54 (3) ◽  
pp. 322-338 ◽  
Author(s):  
H Scherer ◽  
J Schurr ◽  
F J Ahlers
Keyword(s):  
Quantum Metrology ◽  
Electron Counting ◽  
Capacitance Standard
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