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We demonstrate the feasibility of a novel microwave power standard based on the electromagnetic interaction with laser-cooled atoms. Under the effect of the radiation, the internal state populations undergo a Rabi flopping oscillation.…

Atomic Physics · Physics 2007-05-23 David C. Paulusse , Nelson L. Rowell , Alain Michaud

We examine the excitation of unstable magnetosonic waves in the radiative envelopes of intermediate- and high-mass stars with a magnetic field of ~kG strength. Wind clumping close to the star and microturbulence can often be accounted for…

Solar and Stellar Astrophysics · Physics 2018-04-04 Koushik Sen , Rodrigo Fernández , Aristotle Socrates

We propose to use optical detection of magnetic resonance (ODMR) to measure the decoherence time T_{2} of a single electron spin in a semiconductor quantum dot. The electron is in one of the spin 1/2 states and a circularly polarized laser…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Oliver Gywat , Hans-Andreas Engel , Daniel Loss

We theoretically analyze exciton-photon oscillatory dynamics within a homogenous polariton gas in presence of energy detuning between the cavity and quantum well modes. Whereas pure Rabi oscillations consist of the particle exchange between…

Mesoscale and Nanoscale Physics · Physics 2015-11-17 Nina Voronova , Andrei Elistratov , Yurii Lozovik

An electromagnetic wave propagating through a waveguide with a strongly coupled superconducting artificial two-level atom exhibits an evolving superposition with the atom. The Rabi oscillations in the atom result from a single…

Quantum Physics · Physics 2024-12-02 A. V. Vasenin , Sh. V. Kadyrmetov , A. N. Bolgar , A. Yu. Dmitriev , O. V. Astafiev

There are two distinct techniques of proven effectiveness for extending the coherence lifetime of spin qubits in environments of other spins. One is dynamical decoupling, whereby the qubit is subjected to a carefully timed sequence of…

Quantum Physics · Physics 2015-06-16 Setrak J. Balian , Ren-Bao Liu , T. S. Monteiro

We study the dynamics of two giant atoms interacting with a coupled resonator waveguide (CRW) beyond the Markovian approximation. The distinct atomic configurations determine the number of bound states in the continuum (BIC), leading to…

Quantum Physics · Physics 2024-11-22 Hongwei Yu , Xiaojun Zhang , Zhihai Wang , Jin Wang

We report on room-temperature coherent manipulation of the spin of a single nitrogen-vacancy center in diamond and a study of its coherence as a function of magnetic field. We use magnetic resonance to induce Rabi nutations, and apply a…

Quantum Physics · Physics 2007-05-23 R. Hanson , O. Gywat , D. D. Awschalom

We report on coherent resonant emission of the fundamental exciton state in a single semiconductor GaAs quantum dot. Resonant regime with picoseconde laser excitation is realized by embedding the quantum dots in a waveguiding structure. As…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 R. Melet , V. Voliotis , A. Enderlin , D. Roditchev , X. L. Wang , T. Guillet , R. Grousson

Nonlinear optical response and optical coherence of excitons in semiconductor dense quantum dots in GaAs single quantum wells has been studied by using photon echo techniques. At low temperatures, the optical coherence is estimated to be 2…

Materials Science · Physics 2007-05-23 Y. Mitsumori , A. Hasegawa , M. Sasaki , H. Maruki , F. Minami

We show that the interaction between carriers confined in a quantum dot and the surrounding lattice under external driving of carrier dynamics has a dynamical, resonant character. The quality of Rabi oscillations in such a system depends on…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Pawel Machnikowski , Lucjan Jacak

Quantum sensing using local defects in solid-state systems has gained significant attention over the past several years, with impressive results demonstrated both in Academia and in Industry. Specifically, employing large volume and high…

Quantum Physics · Physics 2023-09-21 Yachel Ben-Shalom , Amir Hen , Nir Bar-Gill

Through the exact solution of a two-electron system interacting with a monochromatic laser we prove that all adiabatic density functionals within time-dependent density-functional theory are not able to discern between resonant and…

Other Condensed Matter · Physics 2011-08-10 J. I. Fuks , N. Helbig , I. V. Tokatly , A. Rubio

The decoherence of mixed electron-nuclear spin qubits is a topic of great current importance, but understanding is still lacking: while important decoherence mechanisms for spin qubits arise from quantum spin bath environments with slow…

Mesoscale and Nanoscale Physics · Physics 2015-05-26 S. J. Balian , Gary Wolfowicz , John J. L. Morton , T. S. Monteiro

We theoretically study coherent subharmonic (multi-photon) transitions of a harmonically driven spin. We consider two cases: magnetic resonance (MR) with a misaligned, i.e., non-transversal driving field, and electrically driven spin…

Mesoscale and Nanoscale Physics · Physics 2015-08-19 Judit Romhányi , Guido Burkard , András Pályi

Sensing the internal dynamics of individual nuclear spins or clusters of nuclear spins has recently become possible by observing the coherence decay of a nearby electronic spin: the weak magnetic noise is amplified by a periodic,…

Quantum Physics · Physics 2016-01-05 J. E. Lang , Ren-Bao Liu , T. S. Monteiro

We consider a spin impurity with multiple energy levels moving in a non-interacting Fermi sea, and theoretically solve this Fermi spin polaron problem at nonzero temperature by using a non-self-consistent many-body $T$-matrix theory. We…

Quantum Gases · Physics 2023-12-21 Hui Hu , Xia-Ji Liu

We evaluate the performance and phase diffusion of trapped $^{87}$Rb atoms in an atom-chip sensor with Ramsey interferometry and Hahn's spin echo in the time and phase domains. We trace out how the phase uncertainty of interference fringes…

Atomic Physics · Physics 2018-09-11 Valentin Ivannikov , Andrei I. Sidorov

We investigate the Rabi oscillation of an atom placed inside a quantum cavity where each mirror is formed by a chain of atoms trapped near a one-dimensional waveguide. This proposal was studied previously with the use of Markov…

Quantum Physics · Physics 2016-02-08 Pierre-Olivier Guimond , Alexandre Roulet , Huy Nguyen Le , Valerio Scarani

We investigate the dissipative phase transitions of the anisotropic quantum Rabi model with cavity decay and demonstrate that large spin fluctuations persist in the stationary state, having important consequences on the phase diagram and…

Quantum Physics · Physics 2023-12-12 Jiahui Li , Rosario Fazio , Yingdan Wang , Stefano Chesi