scholarly journals Entangling polaritons via dynamical Casimir effect in circuit quantum electrodynamics

2016 ◽  
Vol 93 (9) ◽  
Author(s):  
D. Z. Rossatto ◽  
S. Felicetti ◽  
H. Eneriz ◽  
E. Rico ◽  
M. Sanz ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Casimir Effect ◽  
Circuit Quantum Electrodynamics ◽  
Dynamical Casimir Effect

(1/ω) Noise and the dynamical Casimir effect

1993 ◽  
Vol 71 (3-4) ◽  
pp. 168-171 ◽  
Author(s):  
A. Widom ◽  
E. Sassaroli ◽  
Y. N. Srivastava
Keyword(s):  
Electromagnetic Radiation ◽  
Quantum Electrodynamics ◽  
Casimir Effect ◽  
Dynamical Casimir Effect ◽  
Electromagnetic Oscillator

The dynamical Casimir effect in quantum electrodynamics, which occurs for a frequency-modulated electromagnetic oscillator, is described in terms of reflection backward in time of the oscillator mode. From an experimental viewpoint, baekward-in-time reflections appear as radiated photons. The distribution of the electromagnetic radiation due to a modulation pulse is computed as a function of the frequency ω and is shown to exhbit a (1/ω) singularity in the limit ω → 0.

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 Two-resonator circuit quantum electrodynamics: Dissipative theory

2010 ◽  
Vol 81 (14) ◽  
Author(s):  
Georg M. Reuther ◽  
David Zueco ◽  
Frank Deppe ◽  
Elisabeth Hoffmann ◽  
Edwin P. Menzel ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Circuit Quantum Electrodynamics

scholarly journals Efficient transfer of an arbitrary qutrit state in circuit quantum electrodynamics

2015 ◽  
Vol 40 (23) ◽  
pp. 5602 ◽  
Author(s):  
Tong Liu ◽  
Shao-Jie Xiong ◽  
Xiao-Zhi Cao ◽  
Qi-Ping Su ◽  
Chui-Ping Yang
Keyword(s):  
Quantum Electrodynamics ◽  
Circuit Quantum Electrodynamics ◽  
Efficient Transfer

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

scholarly journals Critical slowing down in circuit quantum electrodynamics

2021 ◽  
Vol 7 (21) ◽  
pp. eabe9492
Author(s):  
Paul Brookes ◽  
Giovanna Tancredi ◽  
Andrew D. Patterson ◽  
Joseph Rahamim ◽  
Martina Esposito ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Quantum Circuit ◽  
Critical Slowing Down ◽  
Microwave Cavity ◽  
Many Body ◽  
Circuit Quantum Electrodynamics ◽  
Slowing Down ◽  
The Rich ◽  
First Order Phase ◽  
Shed Light

Critical slowing down of the time it takes a system to reach equilibrium is a key signature of bistability in dissipative first-order phase transitions. Understanding and characterizing this process can shed light on the underlying many-body dynamics that occur close to such a transition. Here, we explore the rich quantum activation dynamics and the appearance of critical slowing down in an engineered superconducting quantum circuit. Specifically, we investigate the intermediate bistable regime of the generalized Jaynes-Cummings Hamiltonian (GJC), realized by a circuit quantum electrodynamics (cQED) system consisting of a transmon qubit coupled to a microwave cavity. We find a previously unidentified regime of quantum activation in which the critical slowing down reaches saturation and, by comparing our experimental results with a range of models, we shed light on the fundamental role played by the qubit in this regime.

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 Cutoff-Free Circuit Quantum Electrodynamics

2017 ◽  
Vol 119 (7) ◽  
Author(s):  
Moein Malekakhlagh ◽  
Alexandru Petrescu ◽  
Hakan E. Türeci
Keyword(s):  
Quantum Electrodynamics ◽  
Circuit Quantum Electrodynamics
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