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Quantum technologies that rely on photonic qubits require a precise controllability of their properties. For this purpose hybrid approaches are particularly attractive because they offer a large flexibility to address different aspects of…

Dipolar bosonic gases are currently the focus of intensive research due to their interesting many-body physics in the quantum regime. Their experimental embodiments range from Rydberg atoms to GaAs double quantum wells and van der Waals…

Mesoscale and Nanoscale Physics · Physics 2024-06-25 Zhe Sun , Alberto Ciarrocchi , Fedele Tagarelli , Juan Francisco Gonzalez Marin , Kenji Watanabe , Takashi Taniguchi , Andras Kis

Interdigitated transducers were used to generate and detect surface acoustic waves on a thin layer of (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic anisotropy of this dilute magnetic semiconductor is very sensitive to the strain of the…

We propose the Bose-Einstein condensation (BEC) and superfluidity of quasi-two-dimensional (2D) spatially indirect magnetobiexcitons in a slab of superlattice with alternating electron and hole layers consisting from the semiconducting…

Mesoscale and Nanoscale Physics · Physics 2007-11-08 Oleg L. Berman , Roman Ya. Kezerashvili , Yurii E. Lozovik

A Bose-Einstein condensate is the ground state of a dilute gas of bosons, such as atoms cooled to temperatures close to absolute zero. With much smaller mass, excitons (bound electron-hole pairs) are expected to condense at significantly…

Mesoscale and Nanoscale Physics · Physics 2021-03-31 Zefang Wang , Daniel A. Rhodes , Kenji Watanabe , Takashi Taniguchi , James C. Hone , Jie Shan , Kin Fai Mak

The rising need for hybrid physical platforms has triggered a renewed interest for the development of agile radio-frequency phononic circuits with complex functionalities. The combination of travelling waves with resonant mechanical…

The contactless Surface Acoustic Wave (SAW) technique was implemented to probe the high-frequency (ac) conductivity in a high-mobility $p$-SiGe/Ge/SiGe structure in the integer quantum Hall (IQHE) regime. The structure was grown by…

Mesoscale and Nanoscale Physics · Physics 2013-12-12 I. L. Drichko , V. A. Malysh , I. Yu. Smirnov , A. V. Suslov , O. A. Mironov , M. Kummer , H. von Känel

We consider the interaction between a single-mode quantized perturbing external field and a Bose-Einstein condensate (BEC) out of equilibrium. The usual Rabi type oscillations between the ground and the excited state of the coherent…

Statistical Mechanics · Physics 2009-11-11 Aranya B Bhattacherjee , Vikash Ranjan , Man Mohan

Superfluid and dissipative regimes in the dynamics of a two-component quasi-one-dimensional Bose-Einstein condensate (BEC) with unequal atom numbers in the components have been explored. The system supports localized waves of the symbiotic…

Quantum Gases · Physics 2024-07-03 S. M. Al-Marzoug , B. B. Baizakov , U. Al Khawaja , H. Bahlouli

We demonstrate ultra-sensitive measurement of fluctuations in a surface-acoustic-wave~(SAW) resonator using a hybrid quantum system consisting of the SAW resonator, a microwave (MW) resonator and a superconducting qubit. The nonlinearity of…

Quantum Physics · Physics 2017-11-08 Atsushi Noguchi , Rekishu Yamazaki , Yutaka Tabuchi , Yasunobu Nakamura

We separate a Bose-Einstein condensate into an array of 2D sheets using a 1D optical lattice, and then excite quantized vibrational motion in the direction normal to the sheets. Collisions between atoms induce vibrational de-excitation,…

Other Condensed Matter · Physics 2012-12-24 I. B. Spielman , P. R. Johnson , J. H. Huckans , C. D. Fertig , S. L. Rolston , W. D. Phillips , J. V. Porto

The Bose-Einstein condensation (BEC) of magnetoexcitonic polaritons in two-dimensional (2D) electron-hole system embedded in a semiconductor microcavity in a high magnetic field $B$ is predicted. There are two physical realizations of 2D…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Oleg L. Berman , Roman Ya. Kezerashvili , Yurii E. Lozovik

Surface acoustic waves (SAWs), coherent vibrational modes localized at solid surfaces, have been employed to manipulate and detect electronic and magnetic states in condensed-matter systems via strain. SAWs are commonly excited in a…

Roton-type excitations usually emerge from strong correlations or long-range interactions, as in superfluid helium or dipolar ultracold atoms. However, in weakly short-range interacting quantum gas, the recently synthesized spin-orbit (SO)…

Quantum Gases · Physics 2015-03-18 Si-Cong Ji , Long Zhang , Xiao-Tian Xu , Zhan Wu , Youjin Deng , Shuai Chen , Jian-Wei Pan

It has recently been demonstrated that surface acoustic waves (SAWs) can interact with superconducting qubits at the quantum level. SAW resonators in the GHz frequency range have also been found to have low loss at temperatures compatible…

In the same way that micro-mechanical resonators resemble guitar strings and drums, Surface Acoustic Waves (SAW) resemble the sound these instruments produce, but moving over a solid surface rather than through air. In contrast with…

Mesoscale and Nanoscale Physics · Physics 2013-03-19 Martin Gustafsson , Paulo V. Santos , Göran Johansson , Per Delsing

A theoretical model is developed for treating super conductive Bose-Einstein condensation (BEC) effects for excitons in planar systems, under the condition that many excitons are included in a surface area, with the dimensions of the…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Y. Ben-Aryeh

The coupling of micro- or nanomechanical resonators via a shared substrate is intensively exploited to built systems for fundamental studies and practical applications. So far, the focus has been on devices operating in the kHz regime with…

Applied Physics · Physics 2021-08-30 Hendrik Kähler , Daniel Platz , Silvan Schmid

We investigate Bose-Einstein condensation for interacting bosons at zero and nonzero temperature. Functional renormalization provides us with a consistent method to compute the effect of fluctuations beyond the Bogoliubov approximation. For…

Superconductivity · Physics 2009-01-28 S. Floerchinger , C. Wetterich

We report evidence of the magnetization reversal in nanoparticles by surface acoustic waves (SAWs). The experimental system consists of isolated magnetite nanoparticles dispersed on a piezoelectric substrate. Magnetic relaxation from a…

Mesoscale and Nanoscale Physics · Physics 2017-08-02 J. Tejada , E. M. Chudnovsky , R. Zarzuela , N. Statuto , J. Calvo-de la Rosa , P. V. Santos , A. Hernandez-Minguez