113 citations · 289 across the 11 of their papers we have counts for
11 papers
Capacitively coupled distinct mechanical resonators for room temperature phonon-cavity electromechanics
Alok Pokharel, Hao Xu, Srisaran Venkatachalam +2
Coupled electromechanical resonators that can be independently driven/detected and easily integrated with external circuits are essential for exploring mechanical modes based signa…
Microwave optomechanical measurement of non-metallized SiN strings at mK temperatures
Sumit Kumar, Yannick Klaß, Baptiste Alperin +5
The mechanical properties of amorphous materials (glasses) at low temperatures are dominated by effects of low energy excitations that are thought to be atomic-scale tunneling two…
Microwave Optomechanically Induced Transparency and Absorption Between 250 and 450 mK
Sumit Kumar, Dylan Cattiaux, Eddy Collin +2
High-quality microwave amplifiers and notch-filters can be made from microwave optomechanical systems in which a mechanical resonator is coupled to a microwave cavity by radiation…
High-Q silicon nitride drum resonators strongly coupled to gates
Xin Zhou, Srisaran Venkatachalam, Ronghua Zhou +5
Silicon nitride (SiN) mechanical resonators with high quality mechanical properties are attractive for fundamental research and applications. However, it is challenging to maintain…
Nanomechanical damping via electron-assisted relaxation of two-level systems
Olivier Maillet, Dylan Cattiaux, Xin Zhou +4
We report on measurements of dissipation and frequency noise at millikelvin temperatures of nanomechanical devices covered with aluminum. A clear excess damping is observed after s…
Electric circuit model of microwave optomechanics
Xin Zhou, Dylan Cattiaux, Didier Theron +1
We report on the generic classical electric circuit modeling that describes standard single-tone microwave optomechanics. Based on a parallel RLC circuit in which a mechanical osci…
Measuring frequency fluctuations in nonlinear nanomechanical resonators
Olivier Maillet, Xin Zhou, Rasul R. Gazizulin +5
Advances in nanomechanics within recent years have demonstrated an always expanding range of devices, from top-down structures to appealing bottom-up MoS and graphene membranes…
Near-zero index magneto-optical medium realized with an unpaired Dirac point
Xin Zhou, Daniel Leykam, A. B. Khanikaev +1
We realize an unpaired Dirac cone at the center of the first Brillouin zone, using a gyromagnetic photonic crystal with broken square sub-lattice symmetry and broken time reversal…
Optical isolation with nonlinear topological photonics
Xin Zhou, You Wang, Daniel Leykam +1
It is shown that the concept of topological phase transitions can be used to design nonlinear photonic structures exhibiting power thresholds and discontinuities in their transmitt…
Non-linear Frequency Transduction of Nano-mechanical Brownian Motion
Olivier Maillet, Xin Zhou, Rasul Gazizulin +4
We report on experiments addressing the non-linear interaction between a nano-mechanical mode and position fluctuations. The Duffing non-linearity transduces the Brownian motion of…
PT Symmetry Breaking and Nonlinear Optical Isolation in Coupled Microcavities
Xin Zhou, Yidong Chong
We perform a theoretical study of nonlinear optical isolator devices based on coupled microcavities with gain and loss. Using coupled-mode theory, we derive a correspondence betwee…