Resolution of superluminal signalling in non-perturbative cavity quantum electrodynamics

Nature Communications
Carlos Sánchez MuñozSimone De Liberato

Abstract

Recent technological developments have made it increasingly easy to access the non-perturbative regimes of cavity quantum electrodynamics known as ultrastrong or deep strong coupling, where the light-matter coupling becomes comparable to the bare modal frequencies. In this work, we address the adequacy of the broadly used single-mode cavity approximation to describe such regimes. We demonstrate that, in the non-perturbative light-matter coupling regimes, the single-mode models become unphysical, allowing for superluminal signalling. Moreover, considering the specific example of the quantum Rabi model, we show that the multi-mode description of the electromagnetic field, necessary to account for light propagation at finite speed, yields physical observables that differ radically from their single-mode counterparts already for moderate values of the coupling. Our multi-mode analysis also reveals phenomena of fundamental interest on the dynamics of the intracavity electric field, where a free photonic wavefront and a bound state of virtual photons are shown to coexist.

References

Dec 1, 1994·Physical Review. a·S Pascazio, M Namiki
Nov 13, 2003·Physical Review Letters·Guifré Vidal
Aug 25, 2004·Physical Review Letters·Guifré Vidal
Sep 4, 2008·Physical Review Letters·A A HouckR J Schoelkopf
Sep 28, 2010·Physical Review Letters·Javier PriorMartin B Plenio
Jan 15, 2011·Physical Review Letters·J CasanovaE Solano
Jun 15, 2011·Physical Review Letters·T SchwartzT W Ebbesen
Oct 11, 2011·Physical Review Letters·D Braak
Apr 3, 2012·Physical Review Letters·Markus GeiserJérôme Faist
Dec 12, 2012·Physical Review Letters·A RidolfoM J Hartmann
Feb 4, 2014·Physical Review Letters·B PeropadreJ J García-Ripoll
Mar 4, 2014·Physical Review Letters·András VukicsPeter Domokos
Nov 7, 2014·Physical Review Letters·Xufeng ZhangHong X Tang
Jan 24, 2015·Physical Review Letters·E Sanchez-BurilloL Martin-Moreno
Nov 5, 2015·Scientific Reports·J J García-RipollS De Liberato
Oct 22, 2016·Physical Review Letters·Jino GeorgeThomas W Ebbesen
Sep 25, 2017·Nano Letters·Andreas BayerChristoph Lange
Sep 28, 2017·Physical Review Letters·Moein MalekakhlaghHakan E Türeci
Oct 5, 2017·Nature Communications·Jochen BraumüllerAlexey V Ustinov
Nov 15, 2017·Nature Communications·Simone De Liberato

❮ Previous
Next ❯

Citations

Aug 21, 2019·Nature Communications·Neill LambertFranco Nori
Feb 1, 2019·Nature Communications·Adam Stokes, Ahsan Nazir
Dec 12, 2020·Scientific Reports·Luigi GarzianoFranco Nori
Dec 4, 2019·ACS Photonics·Florian BuchholzAngel Rubio

❮ Previous
Next ❯

Software Mentioned

MPS

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.