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The precision of quantum metrology is widely believed to be restricted by the Heisenberg limit, corresponding to a root mean square error that is inversely proportional to the number of independent processes probed in an experiment, N.
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Chiribella, G., D’Ariano, G., Perinotti, P. & Valiron, B · 2009
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Giovannetti, V., Lloyd, S. & Maccone, L · 2011
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Zwierz, M., Pérez-Delgado, C. A. & Kok, P · 2012
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Memory effects in quantum metrology
Yang, Y · 2019
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Does nonlinear metrology offer improved resolution? answers from quantum information theory
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Quantum correlations with no causal order
Oreshkov, O., Costa, F. & Brukner, Č · 2012
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Perfect discrimination of no-signalling channels via quantum superposition of causal structures
Chiribella, G · 2012
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Probing Planck-scale physics with quantum optics
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The elusive Heisenberg limit in quantum enhanced metrology
Demkowicz-Dobrzański, R., Kolodyński, J. & Gu t ´ a ˘ \underset{\acute{}}{\text{t}}\breve{a} , M · 2012
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Optimal networks for quantum metrology: semidefinite programs and product rules
Chiribella, G · 2012
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Indefinite causal order aids quantum depolarizing channel identification
Frey, M · 2019
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Experimental quantum switching for exponentially superior quantum communication complexity
Wei, K. et al · 2019
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Memory effects in quantum metrology
Yang, Y · 2019
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Quantum metrology with indefinite causal order
Zhao, X., Yang, Y. & Chiribella, G · 2020
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Quantum refrigeration with indefinite causal order
Felce, D. & Vedral, V · 2020
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Increasing communication capacity via superposition of order
Goswami, K., Cao, Y., Paz-Silva, G., Romero, J. & White, A · 2020
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Experimental transmission of quantum information using a superposition of causal orders
Guo, Y. et al · 2020
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Robust interferometric sensing using two-photon interference
Aguilar, G., Piera, R., Saldanha, P., de Matos Filho, R. & Walborn, S · 2020
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Quantum metrology with indefinite causal order
Zhao, X., Yang, Y. & Chiribella, G · 2020
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Noisy quantum metrology with the assistance of indefinite causal order
Chapeau-Blondeau, F · 2021
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Computational advantage from the quantum superposition of multiple temporal orders of photonic gates
Taddei, M. M. et al · 2021
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