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The extended quantum Rabi models make a significant contribution to understand the quantum nature of the atom-light interaction. We transform two kinds of extended quantum Rabi model, anisotropic Rabi model and asymmetric Rabi model, into…

Quantum Physics · Physics 2022-07-20 Yibo Liu , Lijun Mao , Yunbo Zhang

Superconducting qubits often show signatures of coherent coupling to microscopic two-level fluctuators (TLFs), which manifest themselves as avoided level crossings in spectroscopic data. In this work we study a phase qubit, in which we…

Time-resolved resonance fluorescence (RF) is used to analyse electron tunneling between a single self-assembled quantum dot (QD) and an electron reservoir. In equilibrium, the RF intensity reflects the average electron occupation of the QD…

Mesoscale and Nanoscale Physics · Physics 2019-07-03 A. Kurzmann , B. Merkel , P. A. Labud , A. Ludwig , A. D. Wieck , A. Lorke , M. Geller

Motivated by the experiments by Zrenner et al. [Nature 418, 612 (2002)], we study the influence of relaxation processes on converting Rabi oscillations in a strongly biased single-quantum-dot photodiode into deterministic photocurrents. We…

Mesoscale and Nanoscale Physics · Physics 2010-01-26 Boris Fainberg , Abraham Nitzan

We explore the coherent transfer of electronic signatures from a strongly correlated, optically gated nanoscale quantum dot to a weakly interacting, electrically backgated microscale channel. In this unique side-coupled `T' geometry for…

Mesoscale and Nanoscale Physics · Physics 2010-08-31 Smitha Vasudevan , Kamil Walczak , Avik W. Ghosh

The spin-orbit interaction in spin qubits enables spin-flip transitions, resulting in Rabi oscillations when an external microwave field is resonant with the qubit frequency. Here, we introduce an alternative driving mechanism of hole spin…

We propose new applications of Floquet theory in Rydberg atoms for constructing quantum entangling gates in atomic ground-state manifolds. By dynamically periodically modulating the Rabi frequencies of transitions between ground and Rydberg…

Quantum Physics · Physics 2024-07-30 Hao-Wen Sun , Jin-Lei Wu , Shi-Lei Su

It is shown that the population Rabi-floppings in a lossless two-level atom, interacting with a monochromatic electromagnetic field, in general are convergent in time. The well-known continuous floppings take place because the restricted…

Quantum Physics · Physics 2009-11-06 A. Zh. Muradyan , V. A. Poghosyan

Understanding the nature of two-level tunneling defects is important for minimizing their disruptive effects in various nano-devices. By exploiting the resonant coupling of these defects to a superconducting qubit, one can probe and…

Disordered Systems and Neural Networks · Physics 2017-07-05 Shlomi Matityahu , Jürgen Lisenfeld , Alexander Bilmes , Alexander Shnirman , Georg Weiss , Alexey V. Ustinov , Moshe Schechter

While the advanced coherent control of qubits is now routinely carried out in low frequency (GHz) systems like single spins, it is far more challenging to achieve for two-level systems in the optical domain. This is because the latter…

Mesoscale and Nanoscale Physics · Physics 2018-11-12 Daniel Wigger , Christian Schneider , Stefan Gerhardt , Martin Kamp , Sven Höfling , Tilmann Kuhn , Jacek Kasprzak

The future of quantum information processing hinges on chip-scale nanophotonics, specifically cavity QED and waveguide QED. One of the foremost processes underpinning quantum photonic technologies is the phenomenon of Rabi oscillations,…

Quantum Physics · Physics 2024-10-28 Debsuvra Mukhopadhyay , Jung-Tsung Shen

Rabi flopping between Bloch bands induced by a weak ac resonant field is a coherent effect involving interband transitions. Here we consider the fundamental processes of emission/absorption of quanta and Rabi oscillations in non-Hermitian…

Mesoscale and Nanoscale Physics · Physics 2020-09-09 Ching Hua Lee , Stefano Longhi

We investigate radio-frequency (rf) spectroscopy, metal-to-superconductor tunneling, and ARPES as probes of isolated out-of-equilibrium quantum systems, and examine the crucial role played by the nonequilibrium distribution function. As an…

Quantum Gases · Physics 2015-11-25 Yunxiang Liao , Matthew S. Foster

We design a phase-sensitive Rydberg-atom interferometry by implementing Floquet electromagnetically induced transparency (FEIT). The FEIT mixes the sidebands of a Rydberg state induced by a MHz radio frequency (RF) field and recombines them…

Quantum Physics · Physics 2025-01-22 Yingying Han , Changfa He , Peng Xu , Yanting Zhao , Tao Wang , Weidong Li

We proposed a scheme to demonstrate macroscopic quantum jumps in a superconducting phase qubit coupled to a microscopic two-level system in the Josephson tunnel junction. Irradiated with suitable microwaves, the Rabi oscillations of the…

Quantum Physics · Physics 2015-05-13 Xueda Wen , Shi-Liang Zhu , Yang Yu

Semiclassical descriptions of a few-level system coupled to an electromagnetic field mode reduce the field to a time-dependent driving term. Although such methods are widely used, the underlying quantum character of the field generates…

Quantum Physics · Physics 2026-03-19 E. K. Twyeffort , A. D. Armour

We model theoretically the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a FIR photon cavity. For the transient and the intermediate time regimes the currents and the average…

Mesoscale and Nanoscale Physics · Physics 2019-03-15 Vidar Gudmundsson , Hallmann Gestsson , Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Valeriu Moldoveanu

A two-level quantum system coherently driven by a resonant electromagnetic field oscillates sinusoidally between the two levels at frequency $\Omega$ which is proportional to the field amplitude [1]. This phenomenon, known as the Rabi…

Atomic Physics · Physics 2015-06-05 Y. O. Dudin , L. Li , F. Bariani , A. Kuzmich

Rabi oscillation is a pure quantum phenomenon where the system jumps forth and back between two quantum levels under stimulation of a microwave, and a resonance occurs when the energy difference is matched by the photon energy. Rabi…

Mesoscale and Nanoscale Physics · Physics 2015-07-13 Zhi Wang , Qi-Feng Liang , Dao-Xin Yao , Xiao Hu

Rabi oscillations of a two-level atom appear as a quantum interference effect between the amplitudes associated to atomic superpositions, in analogy with the classic double-slit experiment which manifests a sinusoidal interference pattern.…

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