Dynamical Casimir effect in a cavity with a weakly non-equidistant spectrum

2012 ◽  
Vol 376 (24-25) ◽  
pp. 1903-1906 ◽  
Author(s):  
A.V. Dodonov ◽  
V.V. Dodonov
Keyword(s):  
Casimir Effect ◽  
Dynamical Casimir Effect ◽  
Equidistant Spectrum

scholarly journals Shaping Dynamical Casimir Photons

Universe ◽  
2021 ◽  
Vol 7 (6) ◽  
pp. 189
Author(s):  
Diego A. R. Dalvit ◽  
Wilton J. M. Kort-Kamp
Keyword(s):  
Optical Properties ◽  
Lattice Structure ◽  
Casimir Effect ◽  
Surface Profile ◽  
Microscopic Theory ◽  
Space Time ◽  
Quantum Vacuum ◽  
Dynamical Casimir Effect ◽  
Photon Pairs ◽  
Time Quantum

Temporal modulation of the quantum vacuum through fast motion of a neutral body or fast changes of its optical properties is known to promote virtual into real photons, the so-called dynamical Casimir effect. Empowering modulation protocols with spatial control could enable the shaping of spectral, spatial, spin, and entanglement properties of the emitted photon pairs. Space–time quantum metasurfaces have been proposed as a platform to realize this physics via modulation of their optical properties. Here, we report the mechanical analog of this phenomenon by considering systems in which the lattice structure undergoes modulation in space and in time. We develop a microscopic theory that applies both to moving mirrors with a modulated surface profile and atomic array meta-mirrors with perturbed lattice configuration. Spatiotemporal modulation enables motion-induced generation of co- and cross-polarized photon pairs that feature frequency-linear momentum entanglement as well as vortex photon pairs featuring frequency-angular momentum entanglement. The proposed space–time dynamical Casimir effect can be interpreted as induced dynamical asymmetry in the quantum vacuum.

scholarly journals Dynamical Casimir effect instabilities

2006 ◽  
Vol 74 (3) ◽  
Author(s):  
Y. N. Srivastava ◽  
A. Widom ◽  
S. Sivasubramanian ◽  
M. Pradeep Ganesh
Keyword(s):  
Casimir Effect ◽  
Dynamical Casimir Effect

The Dynamical Behaviors of the Two-Atom and the Dynamical Casimir Effect in a Non-Stationary Cavity

2018 ◽  
Vol 58 (3) ◽  
pp. 786-798 ◽  
Author(s):  
Hui Liu ◽  
Qi Wang ◽  
Xue Zhang ◽  
Yu Mei Long ◽  
ShuMei Pan ◽  
...  
Keyword(s):  
Casimir Effect ◽  
Dynamical Casimir Effect ◽  
Dynamical Behaviors

scholarly journals Microscopic dynamical Casimir effect

2018 ◽  
Vol 97 (3) ◽  
Author(s):  
Reinaldo de Melo e Souza ◽  
François Impens ◽  
Paulo A. Maia Neto
Keyword(s):  
Casimir Effect ◽  
Dynamical Casimir Effect

scholarly journals The Dynamical Casimir Effect in a Dissipative Optomechanical Cavity Interacting with Photonic Crystal

Physics ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 34-48 ◽  
Author(s):  
Satoshi Tanaka ◽  
Kazuki Kanki
Keyword(s):  
Photonic Crystal ◽  
Casimir Effect ◽  
Stationary Mode ◽  
Complex Eigenvalue ◽  
Dynamical Casimir Effect ◽  
Pump Frequency ◽  
Practical Advantage ◽  
Dissipation Effect ◽  
Ideal System ◽  
Optomechanical Cavity

We theoretically study the dynamical Casimir effect (DCE), i.e., parametric amplification of a quantum vacuum, in an optomechanical cavity interacting with a photonic crystal, which is considered to be an ideal system to study the microscopic dissipation effect on the DCE. Starting from a total Hamiltonian including the photonic band system as well as the optomechanical cavity, we have derived an effective Floquet–Liouvillian by applying the Floquet method and Brillouin–Wigner–Feshbach projection method. The microscopic dissipation effect is rigorously taken into account in terms of the energy-dependent self-energy. The obtained effective Floquet–Liouvillian exhibits the two competing instabilities, i.e., parametric and resonance instabilities, which determine the stationary mode as a result of the balance between them in the dissipative DCE. Solving the complex eigenvalue problem of the Floquet–Liouvillian, we have determined the stationary mode with vanishing values of the imaginary parts of the eigenvalues. We find a new non-local multimode DCE represented by a multimode Bogoliubov transformation of the cavity mode and the photon band. We show the practical advantage for the observation of DCE in that we can largely reduce the pump frequency when the cavity system is embedded in a narrow band photonic crystal with a bandgap.

Model of time-dependent geometric graph for dynamical Casimir effect

2020 ◽  
Author(s):  
I. S. Lobanov ◽  
D. S. Nikiforov ◽  
I. Y. Popov ◽  
A. I. Trifanov ◽  
E. S. Trifanova
Keyword(s):  
Casimir Effect ◽  
Geometric Graph ◽  
Time Dependent ◽  
Dynamical Casimir Effect
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