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Spin measurement is studied as a unitary time evolution of the spin coupled to an environment representing the meter and the apparatus. Modelling the environment as a heat bath comprising only a finite number of boson modes and represented…

量子物理 · 物理学 2022-10-19 Thomas Dittrich , Óscar Rodrí guez , Carlos Viviescas

We study the efficiency of estimation procedures where the temperature of an external bath is indirectly recovered by monitoring the transformations induced on a probing system that is put in thermal contact with the bath. In particular we…

量子物理 · 物理学 2017-07-19 Antonella De Pasquale , Kazuya Yuasa , Vittorio Giovannetti

We consider a harmonic oscillator under periodic driving and coupled to two harmonic-oscillator heat baths at different temperatures. We use the thermofield transformation with chain mapping for this setup, which allows us to study the…

量子气体 · 物理学 2022-01-19 Tianqi Chen , Dario Poletti

We investigate the decoherence of a spin 1/2 subsystem weakly coupled to an environment of many spins 1/2 with and without mutual coupling. The total system is closed, its state is pure and evolves under Schroedinger dynamics. Nevertheless,…

量子物理 · 物理学 2009-11-11 Harry Schmidt , Guenter Mahler

We demonstrate that four-wave mixing processes in high-quality non-linear resonators can lead to Rabi-like oscillations in photon occupation numbers and second-order correlation functions, being a characteristic feature of the presence of…

量子物理 · 物理学 2016-03-01 Y. Sherkunov , David M. Whittaker , Vladimir Falko

We use time-domain numerical simulations of a two-dimensional (2D) scattering system to study the interaction of a collection of emitters resonantly coupled to an Anderson-localized mode. For a small electric field intensity, we observe the…

We have studied the properties of a classical $N_S$-body system coupled to a bath containing $N_B$-body harmonic oscillators, employing an $(N_S+N_B)$ model which is different from most of the existing models with $N_S=1$. We have performed…

统计力学 · 物理学 2015-05-20 Hideo Hasegawa

Understanding and mitigating decoherence is a key challenge for quantum science and technology. The main source of decoherence for solid-state spin systems is the uncontrolled spin bath environment. Here, we demonstrate quantum control of a…

量子物理 · 物理学 2012-05-17 G. de Lange , T. van der Sar , M. S. Blok , Z. H. Wang , V. V. Dobrovitski , R. Hanson

We analyze a prototypical particle-in-a-box model for a hole spin qubit. This quantum dot is subjected to static magnetic and electric fields, and to a radio-frequency electric field that drives Rabi oscillations owing to spin-orbit…

量子物理 · 物理学 2019-04-02 Benjamin Venitucci , Yann-Michel Niquet

Two-level quantum systems with strong spin-orbit coupling allow for all-electrical qubit control and long-distance qubit coupling via microwave and phonon cavities, making them of particular interest for scalable quantum information…

介观与纳米尺度物理 · 物理学 2019-01-11 J. van der Heijden , T. Kobayashi , M. G. House , J. Salfi , S. Barraud , R. Lavieville , M. Y. Simmons , S. Rogge

Understanding the dynamics of dissipative quantum systems, particularly beyond the weak coupling approximation, is central to various quantum applications. While numerically exact methods provide accurate solutions, they often lack the…

量子物理 · 物理学 2024-06-26 Marlon Brenes , Brett Min , Nicholas Anto-Sztrikacs , Nir Bar-Gill , Dvira Segal

Motivated by the remarkable experimental control of synthetic gauge fields in ultracold atomic systems, we investigate the effect of an artificial Rashba spin-orbit coupling on the spin polarization of a two-dimensional repulsive Fermi gas.…

We present an observation of zero to $\pi$ phase flips induced by Rabi oscillation in an unbalanced Ramsey atom interferometer. The phase shift and visibility are experimentally investigated by modulating either the polarization or duration…

原子物理 · 物理学 2016-09-28 R. B. Li , Z. W. Yao , K. Wang , S. B. Lu , L. Cao , J. Wang , M. S. Zhan

Quantum simulation provides important tools in studying strongly correlated many-body systems with controllable parameters. As a hybrid of two fundamental models in quantum optics and in condensed matter physics, the Rabi-Hubbard model…

量子物理 · 物理学 2022-05-02 Quanxin Mei , Bowen Li , Yukai Wu , Minglei Cai , Ye Wang , Lin Yao , Zichao Zhou , Luming Duan

We have observed Rabi-like oscillations in a current-biased dc SQUID presenting enhanced coherence times compared to our previous realization \cite{Claudon_PRL04}. This Josephson device behaves as an anharmonic oscillator which can be…

介观与纳米尺度物理 · 物理学 2009-01-13 Julien Claudon , Alex Zazunov , Frank W. J. Hekking , Olivier Buisson

Strong coupling regime takes place in open hybrid systems consisting of two or more physical subsystems when the coupling strength between subsystems exceeds the relaxation rate. The relaxation arises due to the interaction of the system…

量子物理 · 物理学 2022-04-20 T. T. Sergeev , I. V. Vovcenko , A. A. Zyablovsky , E. S. Andrianov

We investigate synchronization caused by long-range hydrodynamic interaction in a two-dimensional, substrated array of rotors with random intrinsic frequencies. The rotor mimics a flagellated bacterium that is attached to the substrate…

统计力学 · 物理学 2010-03-30 Nariya Uchida , Ramin Golestanian

We investigate theoretically the time evolution of a one-dimensional system of spin-1/2 fermions in a harmonic trap after, initially, a spiral spin configuration far-from equilibrium is created. We predict a spin segregation building up in…

量子气体 · 物理学 2011-12-30 Ulrich Ebling , Andre Eckardt , Maciej Lewenstein

We present a wavefunction methodology to account for finite temperature initial conditions in the quantum Rabi model. The approach is based on the Davydov-Ansatz together with a statistical sampling of the canonical harmonic oscillator…

量子物理 · 物理学 2018-01-17 Michael Werther , Frank Grossmann

Prepare a two-species BEC in a perfectly phase-mixed state. By applying Rabi drives, one can tune the range of wavelengths of phase-separating excitations that are dynamically unstable. Yada yada yada, this determines the characteristic…

软凝聚态物质 · 物理学 2007-05-23 J. R. Anglin
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