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Conference papers

Quantum adiabatic elimination at arbitrary order for photon number measurement

Alain Sarlette 1 Pierre Rouchon 2, 1 Antoine Essig 3 Quentin Ficheux 3 Benjamin Huard 3
1 QUANTIC - QUANTum Information Circuits
ENS Paris - École normale supérieure - Paris, MINES ParisTech - École nationale supérieure des mines de Paris, SU - Sorbonne Université, Inria de Paris
Abstract : Adiabatic elimination is a perturbative model reduction technique based on timescale separation and often used to simplify the description of composite quantum systems. We here analyze a quantum experiment where the perturbative expansion can be carried out to arbitrary order, such that: (i) we can formulate in the end an exact reduced model in quantum form; (ii) as the series provides accuracy for ever larger parameter values, we can discard any condition on the timescale separation, thereby analyzing the intermediate regime where the actual experiment is performing best; (iii) we can clarify the role of some gauge degrees of freedom in this model reduction technique.
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Contributor : Mazyar Mirrahimi <>
Submitted on : Monday, December 21, 2020 - 1:45:19 PM
Last modification on : Tuesday, January 5, 2021 - 2:03:12 PM

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  • HAL Id : hal-03084837, version 1
  • ARXIV : 2001.02550


Alain Sarlette, Pierre Rouchon, Antoine Essig, Quentin Ficheux, Benjamin Huard. Quantum adiabatic elimination at arbitrary order for photon number measurement. 2020 IFAC World Congress, IFAC, Jul 2020, Berlin, Germany. ⟨hal-03084837⟩



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