Quantum Device Emulates the Dynamics of Two Coupled Oscillators

[en] Our quantum device is a solid-state array of semiconducting quantum dots that is addressed and read by 2D electronic spectroscopy. The experimental ultrafast dynamics of the device is well simulated by solving the time-dependent Schrödinger equation for a Hamiltonian that describes the lower electronically excited states of the dots and three laser pulses. The time evolution induced in the electronic states of the quantum device is used to emulate the quite different nonequilibrium vibrational dynamics of a linear triatomic molecule. We simulate the energy transfer between the two local oscillators and, in a more elaborate application, the expectation values of the quantum mechanical creation and annihilation operators of each local oscillator. The simulation uses the electronic coherences engineered in the device upon interaction with a specific sequence of ultrafast pulses. The algorithm uses the algebraic description of the dynamics of the physical problem and of the hardware.

Research Center/Unit :

MolSys - Molecular Systems - ULiège

Disciplines :

Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others

Author, co-author :

Komarova, Ksenia

Gattuso, Hugo ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique

Levine, R. D.

Remacle, Françoise ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique

Language :

English

Title :

Quantum Device Emulates the Dynamics of Two Coupled Oscillators

Publication date :

2020

Journal title :

Journal of Physical Chemistry Letters

eISSN :

1948-7185

Publisher :

American Chemical Society, Washington, United States - District of Columbia

Volume :

Pages :

6990-6995

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://doi.org/10.1021/acs.jpclett.0c01880

European Projects :

H2020 - 766563 - COPAC - Coherent Optical Parallel Computing

Name of the research project :

MONACOMP

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique
EC - European Commission

Available on ORBi :

since 26 January 2021

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