Results 41 to 50 of about 3,314 (119)

Coherent Microwave, Optical, and Mechanical Quantum Control of Spin Qubits in Diamond

Advanced Quantum Technologies, Volume 8, Issue 2, February 2025.
Color centers in diamond are a promising platform for quantum network applications. They meet key requirements for quantum nodes, constituting optically active long‐lived spin qubits. The review explores coherent quantum control operations based on microwave and optical methods, alongside emerging techniques like cavity‐mediated spin–photon interaction
Laura Orphal‐Kobin, Cem Güney Torun, Julian M. Bopp, Gregor Pieplow, Tim Schröder   +4 more
wiley   +1 more source

Multimode Emission in GaN Microdisk Lasers

Laser &Photonics Reviews, Volume 18, Issue 10, October 2024.
Quantum well nanolasers usually show single‐mode lasing. In this paper, multimode laser emission is observed in whispering gallery mode microdisk lasers with GaN quantum wells as active material. The presence of multimode emission despite gain saturation is explained by photon exchange between modes via population pulsations similar to classical wave ...
Monty L. Drechsler, Luca Sung‐Min Choi, Farsane Tabataba‐Vakili, Felix Nippert, Aris Koulas‐Simos, Michael Lorke, Stephan Reitzenstein, Blandine Alloing, Philippe Boucaud, Markus R. Wagner, Frank Jahnke   +10 more
wiley   +1 more source

Analytic approximations to the phase diagram of the Jaynes-Cummings-Hubbard model with application to ion chains

, 2009
We discuss analytic approximations to the ground state phase diagram of the homogeneous Jaynes-Cummings-Hubbard (JCH) Hamiltonian with general short-range hopping. The JCH model describes e.g.
Alexander Mering, F. H. L. Essler, Kilian Singer, Michael Fleischhauer, Peter A. Ivanov   +4 more
core   +1 more source

Molecular scale nanophotonics: hot carriers, strong coupling, and electrically driven plasmonic processes

Nanophotonics, Volume 13, Issue 13, Page 2281-2322, May 2024.
Abstract Plasmonic modes confined to metallic nanostructures at the atomic and molecular scale push the boundaries of light–matter interactions. Within these extreme plasmonic structures of ultrathin nanogaps, coupled nanoparticles, and tunnelling junctions, new physical phenomena arise when plasmon resonances couple to electronic, exitonic, or ...
Yunxuan Zhu, Markus B. Raschke, Douglas Natelson, Longji Cui   +3 more
wiley   +1 more source

Multi-mode mediated exchange coupling in cavity QED

, 2010
Microwave cavities with high quality factors enable coherent coupling of distant quantum systems. Virtual photons lead to a transverse exchange interaction between qubits, when they are non-resonant with the cavity but resonant with each other.
A. Abragam, A. Wallraff, I. Wolff, J. M. Fink, L. Steffen, M. Baur, M. Göppl, R. Bianchetti, R. Loudon, S. Filipp, S. Haroche   +10 more
core   +1 more source

Anomalous Loss Reduction Below Two‐Level System Saturation in Aluminum Superconducting Resonators

Advanced Quantum Technologies, Volume 7, Issue 2, February 2024.
A capacitively‐coupled coplanar waveguide microwave resonator is fabricated and characterized, revealing an unconventional reduction of loss with decreasing temperature below 50 mK at low photon numbers. This anomalous behavior is attributed to the response bandwidth of a single two‐level system (TLS) dropping below the TLS‐resonance detuning at low ...
Tamin Tai, Jingnan Cai, Steven M. Anlage
wiley   +1 more source

A Quantum Perspective on Oscillation Frequencies in Axion Dark Matter Experiments

Annalen der Physik, Volume 536, Issue 1, January 2024.
The time evolution of signals in axion dark matter experiments, such as CASPEr, is looked at from a quantum perspective. Classically, one expects signals oscillating with a frequency equal to the axion mass. The explanation of where this oscillation frequency appears from a quantum perspective and how it relates to the axion quantum state. The suitable
Joerg Jaeckel, Valentina Montoya, Cedric Quint   +2 more
wiley   +1 more source

Quantum Many-Body Phenomena in Coupled Cavity Arrays

, 2008
The increasing level of experimental control over atomic and optical systems gained in the past years have paved the way for the exploration of new physical regimes in quantum optics and atomic physics, characterised by the appearance of quantum many ...
Aichhorn, Akahane, Altug, Angelakis, Angelakis, Angelakis, Angelakis, Aoki, Armani, Armani, Audenaert, Badolato, Barclay, Bayindir, Bayindir, Birnbaum, Bloch, Bose, Brandão, Briegel, Cazalilla, Cho, Colombe, Dayan, Dimer, Duan, Feynman, Fink, Fisher, Fisher, Fleischhauer, Freericks, Gehri, Grangier, Greentree, Greiner, Gross, Hartmann, Hartmann, Hartmann, Hartmann, Hartmann, Hartmann, Hennessy, Hu, Hubbard, Huo, Illuminati, Imam&, Imam&, Imam&, Irish, Jaksch, James, James, Ji, Julien, Kippenberg, Leggett, Lei, Leibfried, Lewenstein, Majer, Makhlin, Makin, Marzani, Mintert, Moriya, Na, Paredes, Plenio, Porras, Porras, Raimond, Raussendorf, Recati, Rossini, Schmidt, Schollwöck, Sillanpää, Song, Spillane, Spillane, Stefanou, Sørensen, Thompson, Trupke, Trupke, Turchette, van der Zant, van Oudenaarden, Wallraff, Werner, Yariv, Zeilinger, Zhou, Zhou   +96 more
core   +1 more source

Polaritonic response theory for exact and approximate wave functions

WIREs Computational Molecular Science, Volume 14, Issue 1, January/February 2024.
The theory behind polaritonic chemistry is discussed from a single‐molecule chemical perspective. We derive a response framework for quantum electrodynamics and provide approximate response equations for ab initio QED‐HF and QED‐CC. Abstract Polaritonic chemistry is an interdisciplinary emerging field that presents several challenges and opportunities ...
Matteo Castagnola, Rosario Roberto Riso, Alberto Barlini, Enrico Ronca, Henrik Koch   +4 more
wiley   +1 more source

Quasienergy description of the driven Jaynes-Cummings model

, 2010
We analyze the driven resonantly coupled Jaynes-Cummings model in terms of a quasienergy approach by switching to a frame rotating with the external modulation frequency and by using the dressed atom picture.
A. H. Nayfeh, A. P. Dmitriev, G. Milburn, M. I. Dykman, M. I. Dykman, M. Thorwart, S. Haroche, V. Peano   +7 more
core   +1 more source